Datasheet

TLV320AIC3100
www.ti.com SLAS667A –NOVEMBER 2009–REVISED MAY 2012
Electrical Characteristics (continued)
At 25°C, AVDD = HPVDD = IOVDD = 3.3 V, SPKVDD = 3.6 V, DVDD = 1.8 V, f
S
(audio) = 48 kHz, CODEC_CLKIN = 256 ×
f
S
, PLL = Off, VOL/MICDET pin disabled (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO ADC
Microphone Input to ADC, 984-Hz Sine-Wave Input, f
S
= 48 kHz, AGC = OFF
MIC with R1 = 20 kΩ (page 1 / register 48 and
Input signal level (0-dB) 0.707 V
RMS
page 1 / register 49, bits D7–D6)
f
S
= 48 kHz, 0-dB PGA gain, MIC input ac-shorted to
SNR Signal-to-noise ratio ground; measured as idle-channel noise, 80 91 dB
A-weighted
(1) (2)
f
S
= 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –60-
Dynamic range dBFS input applied, referenced to 0.707-Vrms input, 91 dB
A-weighted
(1) (2)
Total harmonic distortion + f
S
= 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2
THD+N –85 –70 dB
noise dBFS input applied, referenced to 0.707 Vrms input
f
S
= 48 kHz, 0-dB PGA gain, MIC input 1 kHz at –2
THD Total harmonic distortion –91 dB
dBFS input applied, referenced to 0.707 Vrms input
Input capacitance MIC input 2 pF
Microphone Bias
Page 1 / register 46, bits D1–D0 = 10 2.25 2.5 2.75
Voltage output V
Page 1 / register 46, bits D1–D0 = 01 2
At 4-mA load current, page 1 / register 46, bits D1–D0
5
= 10 (MICBIAS = 2.5 V)
Voltage regulation mV
At 4-mA load current, page 1 / register 46, bits D1–D0
7
= 01 (MICBIAS = 2 V)
Audio ADC Digital Decimation Filter Characteristics
See Section 5.4.4.4 for audio ADC decimation filter characteristics.
AUDIO DAC
DAC Headphone Output, AC-Coupled Load = 16 Ω (Single-Ended),
Driver Gain = 0 dB, Parasitic Capacitance = 30 pF
Full-scale output voltage (0
Output common-mode setting = 1.65 V 0.707 Vrms
dB)
SNR Signal-to-noise ratio Measured as idle-channel noise, A-weighted
(1) (2)
80 95 dB
THD Total harmonic distortion 0-dBFS input –85 –65 dB
Total harmonic distortion +
THD+N 0-dBFS input –82 –60 dB
noise
Mute attenuation 87 dB
PSRR Power-supply rejection ratio
(3)
Ripple on HPVDD (3.3 V) = 200 mVp-p at 1 kHz –62 dB
R
L
= 32 Ω, THD+N ≤ –60 dB 20
P
O
Maximum output power mW
R
L
= 16 Ω, THD+N ≤ –60 dB 60
DAC Lineout (HP Driver in Lineout Mode)
SNR Signal-to-noise ratio Measured as idle-channel noise, A-weighted 95 dB
THD Total harmonic distortion 0-dBFS input, 0-dB gain –86 dB
Total harmonic distortion +
THD+N 0-dBFS input, 0-dB gain –83 dB
noise
DAC Digital Interpolation Filter Characteristics
See Section 5.5.1.4 for DAC interpolation filter characteristics.
(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+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.
(3) DAC to headphone-out PSRR measurement is calculated as PSRR = 20 × log(ΔV
HPL
/ ΔV
HPVDD
).
Copyright © 2009–2012, Texas Instruments Incorporated ELECTRICAL SPECIFICATIONS 7
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