Acconeer A111 User manual

A111 –Pulsed Coherent Radar (PCR)
Datasheet v1.8

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
© 2019 Copyright by Acconeer 2019-06-12 Page 2 of 34
Features
•Fully integrated sensor
-60 GHz Pulsed Coherent Radar (PCR)
-Integrated Baseband, RF front-end and
Antenna in Package (AiP)
-5.5 x 5.2 x 0.88 mm fcCSP, 0.5 mm pitch
•Accurate distance ranging and movements
-Measures absolute range up to 2 m (1)
oAbsolute accuracy in mm
-Relative accuracy in µm
-Possible to recognize movement and
gestures for several objects
-Support continuous and single sweep
mode
-Continuous sweep update rate up to
1500 Hz (2)
-HPBW of 80 (H-plane) and 40 degrees
(E-plane)
•Easy integration
-One chip solution with integrated
Baseband and RF
-Can be integrated behind plastic or glass
without any need for a physical aperture
-Single reflowable component
-1.8 V single power supply, enable with
Power on Reset (PoR)
-Clock input for crystal or external
reference clock, 20-80 MHz
-SPI interface for data transfer, up to 50
MHz SPI clock support
-INTERRUPT support
A111 Overview
The A111 is a radar system based on pulsed
coherent radar (PCR) technology and is setting a
new benchmark for power consumption and
distance accuracy –fully integrated in a small
package of 29 mm2.
The A111 60 GHz radar system is optimized for
high precision and ultra-low power, delivered as a
one package solution with integrated Baseband,
RF front-end and Antenna in Package (AiP). This
will enable easy integration into any portable
battery driven device.
The A111 is based on leading-edge patented
sensor technology with pico-second time
resolution, capable of measuring absolute
distance with mm accuracy up to a range of
2 m (1) and with a continuous sweep update
frequency fully configurable up to 1500 Hz (2).
The A111 60 GHz radar remains uncompromised
by any natural source of interference, such as
noise, dust, color and direct or indirect light.
Applications
•High precision distance measurements with
mm accuracy and high update frequency
•Proximity detection with high accuracy and
the possibility to define multiple proximity
zones
•Motion detection, Speed detection
•Enables material detection
•High precision object tracking, enabling
gesture control
•High precision tracking of 3D objects
•Monitor vital life signs such as breathing and
pulse rate
(1) 2m ranging is guaranteed for an object size, shape and dielectric properties corresponding to a spherical corner reflector of 5 cm radius.
(2) System integration dependent –e.g. Host MCU and SPI performance.

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
Page 3 of 34 2019-06-12 © 2019 Copyright by Acconeer
Table of Contents
1Revision History........................................................................................................................................... 4
2Description.................................................................................................................................................... 5
2.1 Functional Block Diagram.................................................................................................................. 6
3Pin Configuration and Functions............................................................................................................... 7
4Specifications............................................................................................................................................... 9
4.1 Absolute Maximum Ratings............................................................................................................... 9
4.2 Environmental Sensitivity................................................................................................................... 9
4.3 Recommended Operating Conditions............................................................................................ 10
4.4Electrical Specification ..................................................................................................................... 10
4.5 Power Consumption Summary....................................................................................................... 11
4.6 RF Specification................................................................................................................................ 11
5Timing Requirements.................................................................................................................................12
5.1 Serial Peripheral Interface............................................................................................................... 12
6Typical Characteristics...............................................................................................................................14
6.1 Distance Accuracy............................................................................................................................ 14
6.2 Amplitude Accuracy.......................................................................................................................... 15
6.3 Relative Phase Accuracy................................................................................................................. 15
6.4 Half Power Beamwidth (HPBW)..................................................................................................... 16
7Functional Description ...............................................................................................................................17
7.1 Acconeer Software ........................................................................................................................... 18
7.2 Software Integration ......................................................................................................................... 18
7.3 Power Up Sequence......................................................................................................................... 19
8Layout Recommendations.........................................................................................................................21
8.1 Bill of Material (BoM)........................................................................................................................ 22
8.2 XTAL................................................................................................................................................... 23
8.3 External clock source....................................................................................................................... 24
8.4 Power supply..................................................................................................................................... 25
9Regulatory Approval...................................................................................................................................27
9.1 ETSI.................................................................................................................................................... 27
9.1.1 EU declaration of conformity ..................................................................................................... 27
9.2 FCC Approval.................................................................................................................................... 28
9.2.1 FCC Regulatory Notes................................................................................................................ 28
9.2.2 FCC Grant Authorization............................................................................................................ 29
10 Mechanical Data.....................................................................................................................................30
10.1 Recommended Reflow Profile ........................................................................................................ 32
11 Abbreviations..........................................................................................................................................33
Disclaimer.............................................................................................................................................................34

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
© 2019 Copyright by Acconeer 2019-06-12 Page 4 of 34
1 Revision History
Revision
Comment
V1.0
Released version
V1.1
Minor reference correction in chapter 5.1. A111 marking info added in chapter 2.
V1.2
Relative phase accuracy added in chapter 6.3
V1.3
Ordering information added in chapter 2. Equation corrected in XTAL chapter 8.1.
V1.4
- EU declaration of conformity added, chapter 9.0.
- Pin configuration alphabetically order corrected, chapter 3.
- Acconeer Software chapter 7.1 updated including updated software
integration info, chapter 7.2.
V1.5
Removed introduced error in chapter 3, pin configuration.
V1.6
FCC modular approval added, chapter 9.2.
V1.7
Power supply specification added, chapter 8.4.
V1.8
Added clarification, section 9.2.

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
Page 5 of 34 2019-06-12 © 2019 Copyright by Acconeer
2 Description
The A111 is an optimized low-power, high-precision, 60 GHz radar sensor with integrated Baseband,
an RF front-end and an Antenna in Package (AIP).
The sensor is based on pulsed coherent radar (PCR) technology, featuring a leading-edge patented
solution with picosecond time resolution. The A111 is the perfect choice for implementing high-
accuracy, high-resolution sensing systems with low-power consumption.
Ordering information
Part number
Package
Size (nom)
Primary component container
A111-001-T&R
fcCSP50
5.2 x 5.5 x 0.88 mm
Tape & reel
A111-001-TY
fcCSP50
5.2 x 5.5 x 0.88 mm
13” Tray
Acconeer A111 marking

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
© 2019 Copyright by Acconeer 2019-06-12 Page 6 of 34
2.1 Functional Block Diagram
A111 One Package Solution
A111 Silicon
TX
RX
PLL
LDOs
PoR
Communication
Program
memory
Data
memory
SPI (4)
INTERRUPT
XIN (ref clk)
XOUT
1.8V Single
power supply
ENABLE
Digital
Power Timing
mmWave Radio Tx ant.
Rx ant.
Figure 2.1. The A111 functional block diagram.
The A111 silicon is divided into four functional blocks: Power, Digital, Timing and mmWave radio.
The Power functional block includes LDOs and a Power on Reset (PoR) block. Each LDO creates its
own voltage domain. The PoR block generates a Reset signal on each power-up cycle. The host
interfaces the Power functional block of the sensor via 1.8V Single power supply and ENABLE.
The Digital functional block includes sensor control. The data memory stores the radar sweep data
from the ADC. The host interfaces the Sensor via an SPI interface, a Clock (XIN, XOUT) and
INTERRUPT signal.
The Timing block includes the timing circuitry.
The mmWave radio functional block generates and receives radar pulses and includes transmitter
(TX), receiver (RX) and interfaces toward the integrated antennas.

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
Page 7 of 34 2019-06-12 © 2019 Copyright by Acconeer
3 Pin Configuration and Functions
The below figure shows the A111 pin configuration, top view:
1
2
3
4
5
6
7
8
9
10
A
NC
B
NC
C
VIO_1a
VIO_2a
GND
D
VIO_1b
VIO_2b
Supply
E
I/O
F
ENABLE
CLK
G
Analog
H
XOUT
NC
J
VBIAS
SPI_SS
VIO_3a
XIN
K
SPI_CLK
SPI_MISO
SPI_MOSI
INTERRUPT
VIO_3b
Figure 3.1. Pin configuration of the A111 sensor, top view.
The below table shows the A111 total number of 50 pins:
Pin
Pin name
Pin type
Description
Comment
A2
NC
Must no connect
A3-A8
GND
Ground
Must be connected to solid ground plane
A9
GND
Ground
Must be connected to solid ground plane
B1
NC
Must no connect
B2, B9
GND
Ground
Must be connected to solid ground plane
B10
GND
Ground
Must be connected to solid ground plane
C1
GND
Ground
Must be connected to solid ground plane
C2
VIO_1a
Supply voltage
Supply voltage, RF part (1)
C9
VIO_2a
Supply voltage
Supply voltage, RF part (1)
C10
GND
Ground
Must be connected to solid ground plane
D1
VIO_1b
Supply voltage
Supply voltage, RF part (1)
D2, D9
GND
Ground
Must be connected to solid ground plane
D10
VIO_2b
Supply voltage
Supply voltage, RF part (1)
E1, E2,
E9, E10
GND
Ground
Must be connected to solid ground plane
F1
GND
Ground
Must be connected to solid ground plane

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
© 2019 Copyright by Acconeer 2019-06-12 Page 8 of 34
Pin
Pin name
Pin type
Description
Comment
F2, F9
GND
Ground
Must be connected to solid ground plane
F10
ENABLE
I/O
Must be connected to host MCU
available GPIO. ENABLE is active high
G1,
G10
GND
Ground
Must be connected to solid ground plane
H1
GND
Ground
Must be connected to solid ground plane
H2, H9
GND
Ground
Must be connected to solid ground plane
H10
XOUT
CLK
XTAL out
No connect
if no XTAL
J1
VBIAS
Analog
The analog VBIAS must be connected to
VIO_3
J2
SPI_SS
I/O
SPI slave select, active low select.
J3, J5,
J6, J8
GND
Ground
Must be connected to solid ground plane
J9
VIO_3a
Supply voltage
Supply voltage, digital part (1)
J10
XIN
CLK
XTAL input OR external ref clk input
1.1V
domain
K2
SPI_CLK
I/O
SPI Serial Clock
K3
SPI_MISO
I/O
Master Input –Slave Output
K4
GND
Ground
Must be connected to solid ground plane
K5
GND
Ground
Must be connected to solid ground plane
K6
SPI_MOSI
I/O
Master Output –Slave Input
K7
GND
Ground
Must be connected to solid ground plane
K8
INTERRUPT
I/O
Interrupt signal, that is used as an
interrupt in the host, more details are
found in section 7, Description.
mandatory
K9
VIO_3b
Supply voltage
Supply voltage, digital part (1)
Table 3.1. A111 sensor pin list
(1) VIO_1a and VIO_1b are short circuit inside the sensor. VIO_2a and VIO_2b are short circuit inside the sensor. VIO_3a
and VIO_3b are short circuit inside the sensor.

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
Page 9 of 34 2019-06-12 © 2019 Copyright by Acconeer
4 Specifications
4.1 Absolute Maximum Ratings
The below table shows the A111 absolute maximum ratings over operating temperature range, on
package, unless otherwise noted:
Parameter
Description
Min.
Max.
Unit
VIO_1 (2)
1.8 V RF power supply
0
2.0
V
VIO_2 (2)
1.8 V RF power supply
0
2.0
V
VIO_3
1.8 V digital power supply
0
2.0
V
XIN (1)
Clock input port for crystal or reference
clock
-0.5
1.6
V
I/O
I/O supply voltage
-0.5
VIO_3+0.5
V
TOP
Operating temperature range
-40
85
°C
TSTG
High temperature storage
150
°C
Table 4.1. Absolute maximum ratings
(1) XIN input may not exceed 0V when ENABLE is low.
(2) VIO_1 and VIO_2 must never exceed VIO_3.
Stresses beyond those listed in table 4.1 may cause permanent damage to the device. These are stress
ratings only and functional operation of the device at these conditions or at any other conditions
beyond those indicated under Recommended Operating Conditions is not implied. Exposure to
absolute-maximum-rated conditions for extended periods of time may affect device reliability.
4.2 Environmental Sensitivity
The below table shows the A111 environmental sensitivity:
Parameter
Standard
Max.
Unit
Storage temperature
JESD22-A103 (1)
150(1)
ºC
Reflow soldering temperature (1)
J-STD-020 (1)
260
ºC
Moisture Sensitivity Level
JESD22-A113 (1)
MSL3
ESD, Charge Device Model (CDM)
JS-002, Class C2
500
V
ESD, Human Body Model (HBM)
JS-001, Class 1C
1000
V
Latch-up
JESD78, Class I
Pass
Table 4.2 Environmental sensitivity
(1) For reference only. The package is generically qualified by the manufacturer. Acconeer does not guarantee adherence to
standard.

A111 Pulsed Coherent Radar (PCR)
Datasheet, v1.8
© 2019 Copyright by Acconeer 2019-06-12 Page 10 of 34
4.3 Recommended Operating Conditions
The below table shows the A111 recommended operating conditions, on package:
Parameter
Min.
Typ.
Max.
Unit
Operating power supply voltage, VIO_1
1.71
1.8
1.89
V
Operating power supply voltage, VIO_2
1.71
1.8
1.89
V
Operating power supply voltage, VIO_3
1.71
1.8
1.89
V
I/O operating range
-0.3
VIO_3+0.3
V
XIN operating range (1)
-0.3
1.2
V
Operating temperature
-40
85
ºC
Table 4.3. Recommended operating conditions
(1) XIN input must not exceed 0V when ENABLE is low.
4.4 Electrical Specification
The below table shows the A111 electrical DC specification conditions, on package, at TA= 25ºC:
Parameter
Min.
Typ.
Max.
Unit
Current into any power supply
100
mA
I/O VIL Low-level input voltage
-0.3
0.10*VIO_3
V
I/O VIH High-level input voltage
0.90*VIO_3
VIO_3+0.3
V
I/O VOL Low-level output voltage
0.4
V
I/O VOH High-level output voltage
1.6
V
I/O IOL (VOL = 0.4V)
7.8
mA
I/O IOH (VOH = VIO_3-0.4)
5.8
mA
I/O IIL Low-level input current
<1
µA
I/O IIH High-level input current
<1
µA
XIN VIL Low-level input voltage
-0.3
0.4
V
XIN VIH High-level input voltage
1.0
1.2
V
XIN IIL Low-level input current
<1
µA
XIN IIH High-level input current
<1
µA
Table 4.4. Electrical DC conditions