ASAHI KASEI [AK4537]
MS0202-E-04 2005/04
- 8 -
ANALOG CHARACTERISTICS
(Ta=25qC;AVDD, DVDD, PVDD, HVDD=3.3V; AVSS=DVSS=PVSS=HVSS=0V; fs=44.1kHz, BICK=64fs;
Signal Frequency=1kHz; 16bit Data; Measurementfrequency=20Hz a20kHz; unless otherwise specified)
Parameter min typ max Units
MIC Amplifier:
Input Resistance 20 30 40
k:
Gain(MGAIN bit = “0”) -0 -dB
(MGAIN bit = “1”) - 20 - dB
MICPower Supply:
Output Voltage (Note 4) 2.22 2.47 2.72 V
Output Current - - 1.25 mA
Input PGA Characteristics:
Input Resistance (LIN1, RIN1 pins) 5 10 15 k:
(Note 5) (LIN2, RIN2 pins) 30 60 90 k:
StepSize 0.1 0.5 0.9 dB
GainControl Range (LIN1, RIN1 pins) 8 - +27.5 dB
(LIN2, RIN2 pins)
23.5 - +12 dB
ADC Analog Input Characteristics: ALC1=OFF
Resolution 16 Bits
(Note 7) 0.168 0.198 0.228 Vpp
Input Voltage (Note 6) (Note 8) 1.68 1.98 2.28 Vpp
(Note 7) 71 79 - dBFS
S/(N+D) (1dBFS) (Note 8) - 88 - dBFS
(Note 7) 75 83 - dB
D-Range (60dBFS, A-weighted) (Note 8) - 91 - dB
(Note 7) 75 83 - dB
S/N (A-weighted) (Note 8) - 91 - dB
(Note 7) 75 90 - dB
Interchannel Isolation (Note 8) - 100 - dB
(Note 7) - 0.1 0.5 dB
Interchannel GainMismatch (Note 8) - 0.1 0.5 dB
DAC Characteristics:
Resolution - - 16 Bits
Stereo Line Output Characteristics: RL=10k:, DAC oLOUT, ROUT
Output Voltage (Note 9) 1.74 1.94 2.14 Vpp
S/(N+D) (-3dBFS) 78 88 - dBFS
S/N (A-weighted) 85 92 - dB
Interchannel Isolation - 100 - dB
Interchannel GainMismatch - 0.1 0.5 dB
Load Resistance 10 - - k:
Load Capacitance - - 30 pF
Note4. Output voltage isproportional to AVDD voltage. Vout =0.75 x AVDD.
Note5. When IPGA Gainischanged, this typical value changes between 8k:and 11k:(LIN1, RIN1), 48k:and 66k:
(LIN2, RIN2).
Note6. Input voltage is proportional toAVDD voltage. Vin = 0.06 x AVDD)@MicIn, Vin = 0.6 x AVDD(typ)@Line In.
Note7. MIC Gain=20dB, IPGA=0dB, ALC1=OFF, INT(MICL)/EXT(MICR) oIPGA oADC
Note8. IPGA=0dB, ALC1=OFF, LIN2/RIN2 oIPGA oADC
Note9. Output voltage isproportional to AVDD voltage. Vout =0.588 x AVDD.
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