Datasheet

TLV320AIC3204
www.ti.com SLOS602B –SEPTEMBER 2008–REVISED OCTOBER 2012
Electrical Characteristics, ADC (continued)
At 25°C, AV
DD
, DV
DD
, IOV
DD
= 1.8V, LDOIN = 3.3V, AV
DD
LDO disabled, f
s
(Audio) = 48kHz, C
ref
= 10µF on REF pin, PLL
disabled unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO ADC
Input signal level (0dB) Differential Input, CM = 0.9V 10 mV
1kHz sine wave input
Differential configuration
IN1L and IN1R routed to Right ADC
IN2L and IN2R routed to Left ADC
Device Setup
R
in
= 10K, f
s
= 48kHz, AOSR = 128
MCLK = 256* f
s
PLL Disabled
AGC = OFF, Channel Gain = 40dB Processing Block =
PRB_R1,
Power Tune = PTM_R4
ICN Idle-Channel Noise, A- Inputs ac-shorted to ground, input referred noise 2 μV
RMS
weighted
(3)(4)
AUDIO ADC
1kHz sine wave input –0.05 dB
Single-ended configuration
R
in
= 20kΩ f
s
= 48kHz, AOSR = 128,
Gain Error MCLK = 256 * f
s
, PLL Disabled
AGC = OFF, Channel Gain = 0dB
Processing Block = PRB_R1,
Power Tune = PTM_R4, CM = 0.9V
1kHz sine wave input at -3dBFS 108 dB
Single-ended configuration
IN1L routed to Left ADC
Input Channel Separation
IN1R routed to Right ADC, R
in
= 20kΩ
AGC = OFF, AOSR = 128,
Channel Gain = 0dB, CM = 0.9V
1kHz sine wave input at –3dBFS on IN2L, IN2L internally 115 dB
not routed.
Input Pin Crosstalk
IN1L routed to Left ADC
ac-coupled to ground
1kHz sine wave input at –3dBFS on IN2R,
IN2R internally not routed.
IN1R routed to Right ADC
ac-coupled to ground
Single-ended configuration R
in
= 20kΩ,
AOSR = 128 Channel, Gain = 0dB, CM = 0.9V
217Hz, 100mVpp signal on AV
DD
, 55 dB
PSRR Single-ended configuration, R
in
= 20kΩ,
Channel Gain = 0dB; CM = 0.9V
Single-Ended, R
in
= 10kΩ, PGA gain set to 0dB 0 dB
Single-Ended, R
in
= 10kΩ, PGA gain set to 47.5dB 47.5 dB
Single-Ended, R
in
= 20kΩ, PGA gain set to 0dB –6 dB
ADC programmable gain
amplifier gain
Single-Ended, R
in
= 20kΩ, PGA gain set to 47.5dB 41.5 dB
Single-Ended, R
in
= 40kΩ, PGA gain set to 0dB –12 dB
Single-Ended, R
in
= 40kΩ, PGA gain set to 47.5dB 35.5 dB
ADC programmable gain 1-kHz tone 0.5 dB
amplifier step size
(3) Ratio of output level with 1kHz full-scale sine wave input, to the output level with the inputs short circuited, measured A-weighted over a
20Hz to 20kHz bandwidth using an audio analyzer.
(4) All performance measured with 20kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may result in higher
THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter removes out-of-
band noise, which, although not audible, may affect dynamic specification values.
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