PCM1870A Datasheet, PDF (15/46 Pages) Texas Instruments – 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier

PCM1870A
www.ti.com................................................................................................................................................................................................. SLAS617 – AUGUST 2008
Power-Supply Current
The current consumption of the PCM1870A depends on the power-up/down status of each circuit module. In
order to save power consumption, disabling each module is recommended when it is not used in an appliction or
operation. Table 5 shows current consumtption in some states.
Table 5. Power Consumption Table
OPERATION MODE
POWER SUPPLY CURRENT [mA]
V_DD
V_DD
(1.8 V) (3.3 V)
V_CC
(3.3 V)
V_IO
(3.3 V)
ALL POWER DOWN
0.000 0.000 0.001
0.000
Recording (f_S = 48 kHz)
Line input (AIN2L/AIN2R)
1.78 3.71
4.58
0.10
Mic input (AIN1L/AIN1R, 20 dB)
1.79 3.71
5.06
0.10
Mic input (AIN1L/AIN1R, 20 dB) with ALC
2.73 5.59
5.06
0.10
Mono mic input (AIN1L, 20 dB)
1.33 2.80
3.56
0.10
Mono mic input (AIN1L, 20 dB) with ALC
2.21 4.60
3.56
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB)
1.33 2.80
3.88
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB) with ALC
2.21 4.60
3.88
0.10
Recording (f_S = 22.05 kHz)
Line input (AIN2L/AIN2R)
0.82 1.66
3.71
0.10
Mic input (AIN1L/AIN1R, 20 dB)
0.82 1.66
4.20
0.10
Mic input (AIN1L/AIN1R, 20 dB) with ALC
1.26 2.55
4.20
0.10
Mono mic input (AIN1L, 20 dB)
0.61 1.23
2.74
0.10
Mono mic input (AIN1L, 20 dB) with ALC
1.03 2.10
2.74
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB)
0.61 1.23
3.06
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB) with ALC
1.02 2.08
3.06
0.10
Recording (f_S = 16 kHz)
Line input (AIN2L/AIN2R)
0.59 1.18
3.51
0.10
Mic input (AIN1L/AIN1R, 20 dB)
0.59 1.18
3.99
0.10
Mic input (AIN1L/AIN1R, 20 dB) with ALC
0.91 1.85
3.99
0.10
Mono mic input (AIN1L, 20 dB)
0.44 0.87
2.55
0.10
Mono mic input (AIN1L, 20 dB) with ALC
0.75 1.52
2.55
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB)
0.44 0.87
2.87
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB) with ALC
0.74 1.50
2.87
0.10
Recording (f_S = 8 kHz)
Line input (AIN2L/AIN2R)
0.29 0.54
3.23
0.10
Mic input (AIN1L/AIN1R, 20 dB)
0.29 0.54
3.72
0.10
Mic input (AIN1L/AIN1R, 20 dB) with ALC
0.46 0.88
3.72
0.10
Mono mic input (AIN1L, 20 dB)
0.22 0.39
2.29
0.10
Mono mic input (AIN1L, 20 dB) with ALC
0.37 0.70
2.29
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB)
0.22 0.39
2.61
0.10
Mono diff mic input (AIN1L/AIN1R, 20 dB) with ALC)
0.37 0.70
2.61
0.10
Condition: 256 f_S, 16 bits, slave mode, zero data input, no load
PD [mW]
TOTAL
(V_DD = 1.8 V)
0.003
TOTAL
(V_DD = 3.3 V)
0.003
18.3
27.7
19.9
29.3
21.6
35.5
14.1
21.3
15.7
27.3
15.2
22.4
16.8
28.3
13.7
18.1
15.3
19.7
16.1
22.6
10.1
13.4
10.9
1.63
11.2
14.5
11.9
17.3
12.7
15.8
14.2
17.4
14.8
19.6
9.2
11.6
9.8
13.8
10.3
12.7
10.8
14.8
11.2
12.8
12.8
14.4
13.1
15.5
8.0
9.2
8.2
10.2
9.0
10.2
9.3
11.3
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