Datasheet

RECOMMENDED OPERATING CONDITIONS
ELECTRICAL CHARACTERISTICS
TLV320ADC3101
www.ti.com ...................................................................................................................................... SLAS553A – NOVEMBER 2008 – REVISED SEPTEMBER 2009
over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
AVDD
(1)
Analog supply voltage 2.6 3.3 3.6 V
DVDD
(1)
Digital core supply voltage 1.65 1.8 1.95 V
IOVDD
(1)
Digital I/O supply voltage 1.1 1.8 3.6 V
V
I
Analog full-scale 0-dB input voltage (AVDD = 3.3 V) 0.707 Vrms
Digital output load capacitance 10 pF
T
A
Operating free-air temperature – 40 85 ° C
(1) Analog voltage values are with respect to AVSS; digital voltage values are with respect to DVSS.
At 25 ° C, AVDD = 3.3 V , IOVDD = 1.8 V, DVDD = 1.8 V, f
S
= 48-kHz, 16-bit audio data (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO ADC
Input signal level (0-dB) Single-ended input 0.707 Vrms
Input common-mode voltage Single-ended input 1.35 Vrms
Signal-to-noise ratio, f
S
= 48 kHz, 0-dB PGA gain, IN1 inputs selected
SNR 80 92 dB
A-weighted
(1) (2)
and ac-shorted to ground
Dynamic range, f
S
= 48 kHz, 1-kHz – 60-dB full-scale input
92 dB
A-weighted
(1) (2)
applied at IN1 inputs, 0-dB PGA gain
– 90 – 75 dB
f
S
= 48 kHz, 1-kHz – 2-dB full-scale input applied
THD Total harmonic distortion
at IN1 inputs, 0-dB PGA gain
0.003% 0.017%
234 Hz, 100 mV
PP
on AVDD, single-ended input 46
PSRR Power supply rejection ratio dB
234 Hz, 100 mV
PP
on AVDD, differential input 68
ADC channel separation 1 kHz, – 2 dB IN1L to IN1R – 73 dB
ADC gain error 1 kHz input, 0-dB PGA gain 0.7 dB
ADC programmable-gain
1-kHz input tone, R
SOURCE
< 50 Ω 40 dB
amplifier maximum gain
ADC programmable-gain
0.502 dB
amplifier step size
IN1 inputs, routed to single ADC
35
Input mix attenuation = 0 dB
IN2 inputs, input mix attenuation = 0 dB 35
Input resistance k Ω
IN1 inputs, input mix attenuation = – 6 dB 62.5
IN2 inputs, input mix attenuation = – 6 dB 62.5
Input capacitance 10 pF
Input level control minimum
0 dB
attenuation setting
Input level control maximum
6 dB
attenuation setting
Input level control attenuation
6 dB
step size
(1) Ratio of output level with 1-kHz full-scale sine-wave input, to the output level with the inputs short-circuited, measured A-weighted over a
20-Hz to 20-kHz bandwidth using an audio analyzer.
(2) All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may
result in higher THD 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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