Datasheet

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ELECTRICAL CHARACTERISTICS
PCM1870
SLAS544A – MAY 2007 – REVISED SEPTEMBER 2007
All specifications at T
A
= 25 ° C, V
DD
= V
IO
= V
CC
= V
PA
= 3.3 V, f
S
= 48 kHz, system clock = 256 f
S
, and 16-bit data, unless
otherwise noted
PCM1870RHF, PCM1870YZF
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX
AUDIO DATA
Data Format
Resolution 16 Bits
Audio data interface format I
2
S, left-, right-justified, DSP
Audio data bit length 16 Bits
Audio data format MSB-first, 2s-complement
f
S
Sampling frequency 5 50 kHz
V
DD
< 2 V 27
System clock MHz
V
DD
> 2 V 40
DIGITAL INPUT/OUTPUT
Logic family CMOS compatible
V
IH
0.7 V
IO
Input logic level VDC
V
IL
0.3 V
IO
I
IH
V
IN
= 3.3 V 10
Input logic current μ A
I
IL
V
IN
= 0 V – 10
V
OH
I
OH
= – 2 mA 0.75 V
IO
Output logic level VDC
V
OL
I
OL
= 2 mA 0.25 V
IO
LINE INPUT TO DIGITAL OUTPUT THROUGH ADC (AIN1L/R, AIN2L/R AND PGINL/R— ALC = OFF, PG1 = PG2 = PG3 = PG4 = 0 dB
Dynamic Performance
2.828 Vp-p
Full-scale input voltage 0 dB
1 Vrms
Dynamic range EIAJ, A-weighted 90 dB
SNR Signal-to-noise ratio EIAJ, A-weighted 83 90 dB
Channel separation 87 dB
THD+N Total harmonic distortion + noise – 1 dB 0.009% 0.017%
Analog Input
Center voltage 0.5 V
CC
V
AIN1L, AIN1R, AIN2L, and AIN2R 10 20
Input impedance PGINL and PGINR, PG3 = PG4 = – 12 dB 70 142 k Ω
PGINL and PGINR, PG3 = PG4 = 30 dB 4.7 9.5
ANALOG OUTPUTS (AOL AND AOR)
Center voltage 0.5 V
CC
V
Load resistance 10 k Ω
Load capacitance 20 pF
MICROPHONE BIAS— ALC = OFF, PG1 = PG2 = PG3 = PG4 = 0 dB
Bias voltage 0.75 V
CC
V
Bias source current 2 mA
Output noise 6.5 μ V
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Product Folder Link(s): PCM1870