參數資料
型號: PCM1870RHFT
英文描述: 16-Bit Low-Power Stereo Audio ADC With Microphone Bias and Microphone Amplifier
中文描述: 16位低功耗立體聲音頻ADC,具有麥克風偏置和麥克風放大器
文件頁數: 10/49頁
文件大?。?/td> 648K
代理商: PCM1870RHFT
www.ti.com
PG3/PG4 Gain – dB
S
G009
40
50
60
70
85
90
100
0
5
15
10
20
25
30
Single Input
Differential Input
f
= 1 kHz
IN
PG3/PG4 Gain – dB
S
G010
40
45
65
60
55
50
70
75
80
85
90
0
5
15
10
20
25
30
Single Input
Differential Input
f
= 1 kHz
IN
Power Supply – V
T
S
G011
0.007
0.008
0.009
0.010
0.011
0.012
87
88
89
90
91
92
2
2.5
3.5
3
4
f
= 1 kHz
IN
THD+N
SNR
PCM1870
SLAS544–MAY 2007
TYPICAL PERFORMANCE CURVES (continued)
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.
ADC SNR AT HIGH GAIN (PG1/PG2 = 0 dB)
ADC SNR AT HIGH GAIN (PG1/PG2 = 20 dB)
Figure 10.
Figure 11.
THD+N/SNR vs POWER SUPPLY
(ADC TO DIGITAL OUTPUT)
Figure 12.
10
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