Microchip Technology TC7660S Series User manual

TC7660S
TC7660S-14 9/16/96
EVALUATION
KIT
AVAILABLE
© 2001 Microchip Technology Inc. DS21467A
FEATURES
■Oscillator boost from 10kHz to 45kHz
■Converts +5V Logic Supply to ±5V System
■Wide Input Voltage Range ....................1.5V to 12V
■Efficient Voltage Conversion.........................99.9%
■Excellent Power Efficiency ...............................98%
■Low Power Supply..............................80µA @ 5 VIN
■Low Cost and Easy to Use
— Only Two External Capacitors Required
■Available in Small Outline (SOIC) Package
■Improved ESD Protection ..................... Up to 10kV
■No External Diode Required for High Voltage
Operation
GENERAL DESCRIPTION
TheTC7660Sisapin-compatibleupgradetotheIndus-
try standard TC7660 charge pump voltage converter. It
converts a +1.5V to +12V input to a corresponding -1.5V to
-12V output using only two low-cost capacitors, eliminating
inductors and their associated cost, size and EMI. Added
features include an extended supply range to 12V, and a
frequencyboostpinforhigheroperatingfrequency,allowing
the use of smaller external capacitors.
Theon-boardoscillatoroperatesatanominalfrequency
of 10kHz. Frequency is increased to 45kHz when pin 1 is
connected to V+. Operation below 10kHz (for lower supply
current applications) is possible by connecting an external
capacitor from OSC to ground (with pin 1 open).
The TC7660S is available in both 8-pin DIP and 8-pin
smalloutline(SOIC)packagesincommercialandextended
temperature ranges.
FUNCTIONAL BLOCK DIAGRAM
TC7660S
GND
INTERNAL
VOLTAGE
REGULATOR
RC
OSCILLATOR VOLTAGE–
LEVEL
TRANSLATOR
÷2
V+CAP+
82
7
6
OSC
LV
3
LOGIC
NETWORK
VOUT
5
CAP–
4
1
BOOST
SUPER CHARGE PUMP DC-TO-DC VOLTAGE CONVERTER
PIN CONFIGURATION (DIP AND SOIC)
1
2
3
4
8
7
6
5
TC7660SCPA
TC7660SEJA
TC7660SEPA
TC7660SCOA
TC7660SEOA
Boost
CAP+
GND
CAP–
Boost
CAP +
GND
CAP– VOUT
LOW
VOLTAGE (LV)
OSC
+
V
VOUT
LOW
VOLTAGE (LV)
OSC
+
V
1
2
3
4
8
7
6
5
ORDERING INFORMATION
Temperature
Part No. Package Range
TC7660SCOA 8-Pin SOIC 0°C to +70°C
TC7660SCPA 8-Pin Plastic DIP 0°C to +70°C
TC7660SEJA 8-Pin CerDIP – 40°C to +85°C
TC7660SEOA 8-Pin SOIC – 40°C to +85°C
TC7660SEPA 8-Pin Plastic DIP – 40°C to +85°C
TC7660SMJA 8-Pin CerDIP – 55°C to +125°C
TC7660EV Evaluation Kit for
Charge Pump Family

2
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S-14 9/16/96 © 2001 Microchip Technology Inc. DS21467A
ELECTRICAL CHARACTERISTICS: TA= +25°C, V+= 5V, COSC = 0, Test Circuit (Figure 1), unless otherwise
indicated.
Symbol Parameter Test Conditions Min Typ Max Unit
I+Supply Current RL= ∞— 80 160 µA
(Boost pin OPEN or GND) 0°C ≤TA≤+70°C — — 180
– 40°C ≤TA≤+85°C — — 180
– 55°C ≤TA≤+125°C — — 200
I+Supply Current 0°C ≤TA≤+70°C — — 300 µA
(Boost pin = V+)–40°C ≤TA≤+85°C — — 350
– 55°C ≤TA≤+125°C — — 400
V+
HSupply Voltage Range, High Min ≤TA≤Max, 3 — 12 V
RL= 10kΩ, LV Open
V+
LSupply Voltage Range, Low Min ≤TA≤Max, 1.5 — 3.5 V
RL= 10kΩ, LV to GND
ROUT Output Source Resistance IOUT = 20mA — 60 100 Ω
IOUT = 20mA, 0°C ≤TA≤+70°C — 70 120
IOUT = 20mA, – 40°C ≤TA≤+85°C — 70 120
IOUT = 20mA, – 55°C ≤TA≤+125°C — 105 150
V+= 2V, IOUT = 3mA, LV to GND
0°C ≤TA≤+70°C — — 250 Ω
– 55°C ≤TA≤+125°C — — 400
FOSC Oscillator Frequency Pin 7 open; Pin 1 open or GND — 10 — kHz
Boost Pin = V+—45—
PEFF Power Efficiency RL= 5 kΩ; Boost Pin Open 96 98 — %
TMIN ≤TA≤TMAX; Boost Pin Open 95 98 —
Boost Pin = V+—88—
VOUT EFF Voltage Conversion Efficiency RL= ∞99 99.9 — %
ZOSC Oscillator Impedance V+= 2V — 1 — MΩ
V+= 5V — 100 — kΩ
NOTES: 1. Connecting any input terminal to voltages greater than V+or less than GND may cause destructive latch-up. It is recommended that no
inputs from sources operating from external supplies be applied prior to "power up" of the TC7660S.
2. Derate linearly above 50°C by 5.5mW/°C.
ABSOLUTE MAXIMUM RATINGS*
Supply Voltage ......................................................... +13V
LV, Boost, OSC Inputs
Voltage (Note 1) ......................... – 0.3V to (V+ +0.3V)
for V+< 5.5V
(V+ – 5.5V) to (V+ +0.3V)
for V+> 5.5V
Current Into LV (Note 1)......................20µA for V+> 3.5V
Output Short Duration (VSUPPLY ≤5.5V) .........Continuous
Power Dissipation (TA≤70°C) (Note 2)
CerDIP............................................................800mW
Plastic DIP ......................................................730mW
SOIC...............................................................470mW
Operating Temperature Range
C Suffix ..................................................0°C to +70°C
E Suffix .............................................– 40°C to +85°C
M Suffix...........................................– 55°C to +125°C
Storage Temperature Range ................– 65°C to +150°C
Lead Temperature (Soldering, 10 sec) .................+300°C
*Static-sensitive device. Unused devices must be stored in conductive
material. Protect devices from static discharge and static fields. Stresses
above those listed under "Absolute Maximum Ratings" may cause perma-
nent damage to the device. These are stress ratings only and functional
operation of the device at these or any other conditions above those
indicated in the operation sections of the specifications is not implied.
Exposuretoabsolutemaximumratingconditionsforextendedperiodsmay
affect device reliability.

3
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
© 2001 Microchip Technology Inc. DS21467A TC7660S-14 9/16/96
Figure 1. TC7660S Test Circuit
Figure 2. Idealized Charge Pump Inverter
V+
GND S3
S1S2
S4C2
VOUT = – VIN
C1
The voltage regulator portion of the TC7660S is an
integralpart of the anti-latch-upcircuitry.Its inherent voltage
drop can, however, degrade operation at low voltages. To
improve low-voltage operation, the “LV” pin should be
connected to GND, disabling the regulator. For supply
voltages greater than 3.5V, the LV terminal must be left
opento ensure latch-up-proof operation and prevent device
damage.
Theoretical Power Efficiency
Considerations
In theory, a capacitive charge pump can approach
100% efficiency if certain conditions are met:
(1) The drive circuitry consumes minimal power.
(2) The output switches have extremely low ON
resistance and virtually no offset.
(3) The impedances of the pump and reservoir
capacitors are negligible at the pump frequency.
The TC7660S approaches these conditions for nega-
tive voltage multiplication if large values of C1and C2are
used. Energy is lost only in the transfer of charge
between capacitors if a change in voltage occurs. The
energy lost is defined by:
E = 1/2 C1(V12– V22)
V1and V2are the voltages on C1during the pump and
transfercycles.IftheimpedancesofC1andC2arerelatively
high at the pump frequency (refer to Figure 2) compared to
the value of RL, there will be a substantial difference in
voltages V1and V2. Therefore, it is desirable not only to
make C2as large as possible to eliminate output voltage
ripple, but also to employ a correspondingly large value for
C1in order to achieve maximum efficiency of operation.
1
2
3
4
8
7
6
5
TC7660S
+
V+
(+5V)
VO
C1
10µFCOSC
*
+
C2
10µF
IL
RL
IS
V+
NOTE: For large values of COSC (>1000pF), the values
of C1and C2should be increased to 100 F.
Detailed Description
The TC7660S contains all the necessary circuitry to
implement a voltage inverter, with the exception of two
externalcapacitors,whichmaybeinexpensive10µF polar-
izedelectrolyticcapacitors.Operationisbestunderstoodby
considering Figure 2, which shows an idealized voltage
inverter. Capacitor C1is charged to a voltage V+for the half
cyclewhen switches S1and S3areclosed. (Note: Switches
S2andS4areopenduringthishalfcycle.)Duringthesecond
half cycle of operation, switches S2and S4are closed, with
S1and S3open, thereby shifting capacitor C1negatively by
V+volts.ChargeisthentransferredfromC1negativelybyV+
volts.ChargeisthentransferredfromC1toC2,suchthatthe
voltageonC2isexactlyV+,assumingideal switchesand no
load on C2.
Thefour switches in Figure 2 areMOSpower switches;
S1is a P-channel device, and S2, S3and S4are N-channel
devices. The main difficulty with this approach is that in
integrating the switches, the substrates of S3and S4must
alwaysremainreverse-biasedwithrespecttotheirsources,
but not so much as to degrade their ON resistances. In
addition, at circuit start-up, and under output short circuit
conditions (VOUT = V+), the output voltage must be sensed
and the substrate bias adjusted accordingly. Failure to
accomplishthiswillresultinhighpowerlossesandprobable
device latch-up.
This problem is eliminated in the TC7660S by a logic
network which senses the output voltage (VOUT) together
with the level translators, and switches the substrates of S3
and S4to the correct level to maintain necessary reverse
bias.

4
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S-14 9/16/96 © 2001 Microchip Technology Inc. DS21467A
The output characteristics of the circuit in Figure 3 are
those of a nearly ideal voltage source in series with 70Ω.
Thus, for a load current of –10mA and a supply voltage of
+5V, the output voltage would be –4.3V.
Thedynamic output impedanceofthe TC7660S isdue,
primarily, to capacitive reactance of the charge transfer
capacitor (C1). Since this capacitor is connected to the
output for only 1/2 of the cycle, the equation is:
Paralleling Devices
Any number of TC7660S voltage converters may be
paralleledtoreduceoutputresistance(Figure4).Thereser-
voir capacitor, C2, serves all devices, while each device
requires its own pump capacitor, C1. The resultant output
resistance would be approximately:
XC = = 3.18Ω,
where f = 10kHz and C1 = 10µF.
Figure 4. Paralleling Devices Lowers Output Impedance
Dos and Don'ts
•Do not exceed maximum supply voltages.
•Do not connect the LV terminal to GND for supply
voltages greater than 3.5V.
•Do not short circuit the output to V+supply for voltages
above 5.5V for extended periods; however, transient
conditions including start-up are okay.
•When using polarized capacitors in the inverting mode,
the + terminal of C1must be connected to pin 2 of the
TC7660S and the + terminal of C2must be connected
to GND.
Simple Negative Voltage Converter
Figure 3 shows typical connections to provide a nega-
tive supply where a positive supply is available. A similar
scheme may be employed for supply voltages anywhere in
the operating range of +1.5V to +12V, keeping in mind that
pin6(LV)istiedtothesupplynegative(GND)onlyforsupply
voltages below 3.5V.
Figure 3. Simple Negative Converter
1
2
3
4
8
7
6
5
TC7660S
V+
1
2
3
4
8
7
6
5
TC7660S
C1
RL
C2
C1
"n"
"1"
+
1
2
3
4
8
7
6
5
TC7660S
10µF+
V
+10µF
+
VOUT*
NOTES:*
C1C2
2
2πf C1
ROUT (of TC7660S)
n (number of devices)
ROUT =

5
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
© 2001 Microchip Technology Inc. DS21467A TC7660S-14 9/16/96
Figure 5. Increased Output Voltage by Cascading Devices
situation where the designer has generated the external
clockfrequencyusing TTLlogic,theadditionofa10kΩpull-
up resistor to V+supply is required. Note that the pump
frequency with external clocking, as with internal clocking,
will be ¹⁄₂ ofthe clockfrequency.Output transitions occur on
the positive-going edge of the clock.
It is also possible to increase the conversion efficiency
of the TC7660S at low load levels by lowering the oscillator
frequency.Thisreducestheswitchinglosses,andisachieved
by connecting an additional capacitor, COSC, as shown in
Figure 7. Lowering the oscillator frequency will cause an
undesirableincreaseintheimpedanceofthepump(C1)and
thereservoir(C2)capacitors.Toovercomethis,increasethe
values of C1and C2by the same factor that the frequency
has been reduced. For example, the addition of a 100pF
capacitor between pin 7 (OSC) and pin 8 (V+) will lower the
oscillator frequency to 1kHz from its nominal frequency of
10kHz (a multiple of 10), and necessitate a corresponding
increase in the values of C1and C2(from 10µF to 100µF).
Positive Voltage Multiplication
The TC7660S may be employed to achieve positive
voltage multiplication using the circuit shown in Figure 8. In
thisapplication,thepumpinverterswitchesoftheTC7660S
are used to charge C1to a voltage level of V+–VF(where V+
is the supply voltage and VFis the forward voltage drop of
diode D1). On the transfer cycle, the voltage on C1plus the
supply voltage (V+) is applied through diode D2to capacitor
C2. The voltage thus created on C2becomes (2V+) –(2VF),
or twice the supply voltage minus the combined forward
voltage drops of diodes D1and D2.
Thesource impedanceofthe output(VOUT) will depend
on the output current, but for V+= 5V and an output current
of 10mA, it will be approximately 60Ω.
Cascading Devices
TheTC7660S maybe cascadedasshown (Figure5)to
produce larger negative multiplication of the initial supply
voltage.However,duetothefiniteefficiencyofeachdevice,
the practical limit is 10 devices for light loads. The output
voltage is defined by:
VOUT = –n (VIN)
where n is an integer representing the number of devices
cascaded. The resulting output resistance would be ap-
proximately the weighted sum of the individual TC7660S
ROUT values.
Changing the TC7660S Oscillator Frequency
Itmaybedesirableinsomeapplications(duetonoiseor
other considerations) to increase the oscillator frequency.
Pin 1, frequency boost pin may be connected to V+to
increase oscillator frequency to 45kHz from a nominal of
10kHzfor an input supplyvoltageof 5.0 volts.Theoscillator
may also be synchronized to an external clock as shown in
Figure6. Inordertopreventpossibledevicelatch-up,a1kΩ
resistor must be used in series with the clock output. In a
Figure 6. External Clocking
1
2
3
4
8
7
6
5
TC7660S
+
V+
+
CMO
S
GATE
10µF
VOUT
10µF
1 kΩ
V+
1
2
3
4
8
7
6
5
V+
1
2
3
4
8
7
6
5
10µF
10µF
"n"
"1"
10µF
VOUT
NOTES:
*
*
+
+
+
TC7660S
TC7660S
1. VOUT = –n(V+) for 1.5V ≤V+≤12V 10µF
+

6
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S-14 9/16/96 © 2001 Microchip Technology Inc. DS21467A
Figure 8. Positive Voltage Multiplier
Combined Negative Voltage Conversion
and Positive Supply Multiplication
Figure9combinesthefunctionsshowninFigures3and
8 to provide negative voltage conversion and positive volt-
agemultiplicationsimultaneously.Thisapproachwould be,
for example, suitable for generating +9V and –5V from an
existing +5V supply. In this instance, capacitors C1and C3
perform the pump and reservoir functions, respectively, for
the generation of the negative voltage, while capacitors C2
and C4are pump and reservoir, respectively, for the multi-
pliedpositivevoltage.Thereisapenaltyinthisconfiguration
whichcombines both functions, however, in that the source
impedances of the generated supplies will be somewhat
higher due to the finite impedance of the common charge
pump driver at pin 2 of the device.
Efficient Positive Voltage
Multiplication/Conversion
Since the switches that allow the charge pumping op-
eration are bidirectional, the charge transfer can be per-
formed backwards as easily as forwards. Figure 10 shows
aTC7660S transforming–5V to+5V (or+5Vto +10V,etc.).
The only problem here is that the internal clock and switch-
drivesectionwillnotoperateuntilsomepositivevoltagehas
been generated. An initial inefficient pump, as shown in
Figure 9, could be used to start this circuit up, after which it
Figure 7. Lowering Oscillator Frequency
1
2
3
4
8
7
6
5
+
V+
VOUT
C1
COSC
+C2
TC7660S
willbypasstheother(D1andD2inFigure9wouldneverturn
on),orelsethediodeandresistorshowndottedinFigure10
can be used to "force" the internal regulator on.
Voltage Splitting
ThesamebidirectionalcharacteristicsusedinFigure10
canalsobe used to split a higher supply in half, as shown in
Figure11.Thecombinedloadwillbeevenlysharedbetween
thetwosides.Onceagain,ahighvalueresistortotheLVpin
ensures start-up. Because the switches share the load in
parallel, the output impedance is much lower than in the
standardcircuits,andhighercurrentscanbedrawnfromthe
device. By using this circuit, and then the circuit of Figure 5,
+15V can be converted (via +7.5V and –7.5V) to a nominal
–15V, though with rather high series resistance (~250Ω).
1
2
3
4
8
7
6
5
V+
VOUT =
(2 V+) –(2 VF)
+C2
D1D2
+C1
TC7660S
1
2
3
4
8
7
6
5
+
V+
VOUT =
(2 V+) –(2 VF)
C1
D1+
+
C3
C4
VOUT = –V+
C2
TC7660S
D2
+
Negative Voltage Generation for
Display ADCs
TheTC7106isdesignedtoworkfroma9Vbattery.With
a fixed power supply system, the TC7106 will perform
conversions with input signal referenced to power supply
ground.
Negative Supply Generation for
4¹⁄₂ Digit Data Acquisition System
The TC7135 is a 4¹⁄₂ digit ADC operating from ±5V
supplies.TheTC7660Sprovidesaninexpensive–5Vsource.
(See AN16 and AN17 for TC7135 interface details and
software routines.)
Figure 9. Combined Negative Converter and Positive Multiplier

7
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
© 2001 Microchip Technology Inc. DS21467A TC7660S-14 9/16/96
Figure 10. Positive Voltage Multiplier
1
2
3
4
8
7
6
5
+
VOUT = –V–
10µF
+
1 MΩ
V–INPUT
C1
10µFTC7660S
+
RL1
RL2
VOUT =
V+–V–
2
50µF
100 kΩ
50µF
V+
V–
50µF+
1 MΩ
1
2
8
7
TC7660S
3
4
6
5
+
–
–
Figure 11. Splitting a Supply in Half
TYPICAL CHARACTERISTICS
Unloaded Osc Freq vs. Temperature
12
10
0
2
4
6
8
-40 -20 0 20 40 10060 80
OSCILLATOR FREQUENCY (kHz)
TEMPERATURE (°C)
V
IN
= 12V
V
IN
= 5V
Unloaded Osc Freq vs. Temperature
with Boost Pin = VIN
60
50
0
10
20
30
40
-40 -20 0 20 40 10060 80
OSCILLATOR FREQUENCY (kHz)
TEMPERATURE (°C)
V
IN
= 12V
V
IN
= 5V
Supply Current vs. Temperature
(with Boost Pin = VIN)
1000
0
200
400
600
800
-40 -20 0 20 40 10060 80
I
DD
(µA)
TEMPERATURE (°C)
V
IN
= 12V Without Load
10K Load
Voltage Conversion
101.0
100.5
100.0
99.5
99.0
98.5
98.0112111098756423
VOLTAGE CONVERSION EFFICIENCY (%)
INPUT VOLTAGE V
IN
(V)
V
IN
= 5V T
A
= 25°C

8
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S-14 9/16/96 © 2001 Microchip Technology Inc. DS21467A
TYPICAL CHARACTERISTICS (Cont.)
Output Voltage vs. Output Current
0
-2
-4
-6
-8
-10
-12
OUTPUT VOLTAGE VOUT (V)
OUTPUT CURRENT (mA)
I
OUT
= 20mA
T
A
= 25°C
0 1009080706040 503010 20
1.5 1211.510.59.58.57.55.5 6.54.52.5 3.5
Output Source Resistance vs. Supply Voltage
100
10
30
50
70
OUTPUT SOURCE RESISTANCE (Ω)
SUPPLY VOLTAGE (V)
Output Source Resistance vs. Temperature
100
0
20
40
60
80
-40 -20 0 20 40 10060 80
OUTPUT SOURCE RESISTANCE (Ω)
TEMPERATURE (°C)
V
IN
= 2.5V
V
IN
= 5.5V
Power Conversion Efficiency vs. Load
POWER EFFICIENCY (%)
LOAD CURRENT (mA)
Boost Pin = Open
Boost Pin = V+
0
10
20
30
40
50
60
70
80
90
100
60.0
55.0
50.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
9.0
7.5
6.0
4.5
3.0
2.0
1.5
1.0
Supply Current vs. Temperature
200
150
125
175
100
75
50
25
0
SUPPLY CURRENT I
DD
(µA)
TEMPERATURE (°C)
-40 -20 0 20 40 10060 80
V
IN
= 12.5V
V
IN
= 5.5V
Supply Current vs. Temperature
200
150
125
175
100
75
50
25
0
SUPPLY CURRENT I
DD
(µA)
TEMPERATURE (°C)
-40 -20 0 20 40 10060 80
V
IN
= 12.5V
V
IN
= 5.5V

9
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
© 2001 Microchip Technology Inc. DS21467A TC7660S-14 9/16/96
TYPICAL CHARACTERISTICS (Cont.)
Supply Current vs. Temperature
200
150
125
175
100
75
50
25
0
SUPPLY CURRENT I
DD
(µA)
TEMPERATURE (°C)
-40 -20 0 20 40 10060 80
V
IN
= 12.5V
V
IN
= 5.5V
PACKAGE DIMENSIONS
3°MIN.
PIN 1
.260 (6.60)
.240 (6.10)
.045 (1.14)
.030 (0.76) .070 (1.78)
.040 (1.02)
.400 (10.16)
.348 (8.84)
.200 (5.08)
.140 (3.56)
.150 (3.81)
.115 (2.92)
.110 (2.79)
.090 (2.29) .022 (0.56)
.015 (0.38)
.040 (1.02)
.020 (0.51) .015 (0.38)
.008 (0.20)
.310 (7.87)
.290 (7.37)
.400 (10.16)
.310 (7.87)
8-Pin Plastic DIP
Dimensions: inches (mm)

10
TC7660S
SUPER CHARGE PUMP DC-TO-DC
VOLTAGE CONVERTER
TC7660S-14 9/16/96 © 2001 Microchip Technology Inc. DS21467A
.050 (1.27) TYP.
8°MAX.
.244 (6.20)
.228 (5.79)
.157 (3.99)
.150 (3.81)
.197 (5.00)
.189 (4.80)
.020 (0.51)
.013 (0.33) .010 (0.25)
.004 (0.10)
.069 (1.75)
.053 (1.35) .010 (0.25)
.007 (0.18)
.050 (1.27)
.016 (0.40)
8-Pin Plastic SOIC
PACKAGE DIMENSIONS (CONT.)
8-Pin CerDIP
Dimensions: inches (mm)
.400 (10.16)
.370 (9.40)
.300 (7.62)
.230 (5.84)
.065 (1.65)
.045 (1.14)
.055 (1.40) MAX. .020 (0.51) MIN.
PIN 1
.200 (5.08)
.160 (4.06)
.200 (5.08)
.125 (3.18)
.
110
(2
.
79)
.090 (2.29)
.020 (0.51)
.016 (0.41)
.040 (1.02)
.020 (0.51)
.320 (8.13)
.290 (7.37)
.150 (3.81)
MIN. 3°MIN.
.015 (0.38)
.008 (0.20)
.400 (10.16)
.320 (8.13)