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参数资料
型号： TLV320AIC22PTR
厂商： Texas Instruments, Inc.
元件分类： Codec
英文描述： DUAL VOIP CODEC
中文描述： 双VoIP编解码器
文件页数： 55/55页
文件大小： 763K
代理商： TLV320AIC22PTR
TLV320AIC22
DUAL VOIP CODEC
SLAS281B – JULY 2000 – REVISED JUNE 2002
9
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ADC dynamic performance characteristics (see Note 5 and Note 8) (continued)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
THD
–68
VI = –9 dBr, PGA gain = 0 dB, Sampling rate = 8 kHz
SNR
–66
dB
ADC dynamic performance with
THD+N
–65
y
caller ID input selected
THD
–45
VI = –40 dBr, PGA gain = 0 dB, Sampling rate = 8 kHz
SNR
–40
dB
THD+N
–38
V
3 dB PGA
i
0 dB P
i
0 dB
THD
–72
VI = –3 dBr, PGA gain = 0 dB, Preamp gain = 0 dB
Sampling rate = 16 kHz
SNR
–70
dB
Sam ling rate = 16 kHz
THD+N
–68
ADC d
i
f
ith
V
9 dB PGA
i
0 dB P
i
0 dB
THD
–72
ADC dynamic performance with
handset or headset selected
VI = –9 dBr, PGA gain = 0 dB, Preamp gain = 0 dB
Sampling rate = 16 kHz
SNR
–70
dB
handset or headset selected
Sam ling rate = 16 kHz
THD+N
–68
V
40 dB PGA
i
0 dB P
i
0 dB
THD
–50
VI = –40 dBr, PGA gain = 0 dB, Preamp gain = 0 dB
Sampling rate = 16 kHz
SNR
–42
dB
Sam ling rate = 16 kHz
THD+N
–40
NOTES:
5. The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test signal is a sine wave
with 0 dBr = 4 VI(PP) differential as the reference level for ADC analog input signal.
8. The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output common mode is 1.5 V.
ADC characteristics
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VI(PP)
Peak-input voltage, differential
Preamp gain = 0 dB
4
V
Dynamic range
82
dB
Intrachannel isolation (measured at ADC output)
HSIN is selected for ADC input.
Ground the input to the ADC;
full-scale input applied to DAC.
85
dB
EG
Gain error (valid for HSIN, HDIN, and MCIN)
VI = 1 dB at 1020 kHz
–1
1
dB
EG
Gain error (valid for LNIN)
VI = –1 dB at 1020 kHz
±2.5
dB
EO(ADC) ADC channel offset error
HSIN selected for ADC input,
preamp gain = 14 dB, 0-V
differential input signal, inputs
are ac coupled
50
mV
CMRR
Common-mode rejection ratio
HSIN selected for ADC input,
preamp gain = 14 dB, 0-V
differential input signal, common
mode signal of –10 dB applied
50
65
dB
Idle channel noise
HSIN selected for ADC input,
preamp gain = 14 dB, 0-V
differential input signal, inputs
are ac coupled
30
75
V rms
Channel delay (high-pass filter bypassed)
14/fs
s
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