
TLV320AIC22
DUAL VOIP CODEC
SLAS281B – JULY 2000 – REVISED JUNE 2002
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ADC channel transfer response characteristics over recommended ranges of supply voltage
and operating free-air temperature, when selecting handset or headset as input
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
0 Hz to 60 Hz
–26
200 Hz
–1.8
0.35
300 Hz to 3 kHz
–0.3
0.3
–17 dBr input signal, preamp gain = 14 dB, HSIN
or HDIN selected PGA gain=0dB (seen Note 5
3.3 kHz
–0.4
0.2
dB
or HDIN selected, PGA gain = 0 dB (seen Note 5
and Note 6), Sampling rate = 8 kHz
3.4 kHz
–1
–0.1
dB
and Note 6), Sam ling rate
8 kHz
4 kHz
–12.5
4.6 kHz to 8 kHz
–60
Above 8 kHz
–70
Gain relative to gain at 1.02 kHz
0 Hz to 120 Hz
–26
400 Hz
–1.8
0.35
600 Hz to 6 kHz
–0.3
0.3
–24 dBr input signal, preamp gain = 14 dB, HSIN
6.6 kHz
–0.4
0.2
g,
g
,
or HDIN selected, PGA gain = 0 dB (seen Note 5
and Note 7) Sampling rate
16 kHz
6.8 kHz
–1
–0.1
dB
and Note 7), Sampling rate = 16 kHz
8 kHz
–12.5
9.2 kHz to
16 kHz
–60
Above 16 kHz
–56
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.
6. When the high-pass filter is bypassed, the passband is 0 Hz to 3 kHz. When the high-pass filter is inserted, the passband is 300 Hz
to 3 kHz.
7. When the high-pass filter is bypassed, the passband is 0 Hz to 6 kHz. When the high-pass filter is inserted, the passband is 600 Hz
to 6 kHz.
ADC channel passband frequency characteristics with microphone selected as input
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Gi
lti
t
i
t 1 02 kH
–35 dBr input signal, preamp gain = 32 dB,
300 Hz to 3 kHz
–0.3
0.3
Gain relative to gain at 1.02 kHz
(see Note 6)
35 dBr in ut signal, ream gain = 32 dB,
MICIN selected. PGA gain = 0 dB (see Note 5),
Sli
kH
3.3 kHz
–0.4
0.2
dB
(see Note 6)
Sampling rate = 8 kHz
3.4 kHz
–1
–0.1
Gi
lti
t
i
t 1 02 kH
–38 dBr input signal, preamp gain = 32 dB,
600 Hz to 6 kHz
–0.3
0.3
Gain relative to gain at 1.02 kHz
(see Note 7)
38 dBr in ut signal, ream gain = 32 dB,
MICIN selected. PGA gain = 0 dB (see Note 5),
Sli
kH
6.6 kHz
–0.5
0.2
dB
(see Note 7)
Sampling rate = 16 kHz
6.8 kHz
–1.1
–0.1
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.
6. When the high-pass filter is bypassed, the passband is 0 Hz to 3 kHz. When the high-pass filter is inserted, the passband is 300 Hz
to 3 kHz.
7. When the high-pass filter is bypassed, the passband is 0 Hz to 6 kHz. When the high-pass filter is inserted, the passband is 600 Hz
to 6 kHz.