Datasheet

TLV320AIC3120
www.ti.com SLAS653A –FEBRUARY 2010–REVISED MAY 2012
Electrical Characteristics (continued)
At 25°C, AVDD = HPVDD = IOVDD = 3.3 V, SPKVDD = 3.6V, 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
DAC Digital Interpolation Filter Characteristics
See Section 5.6.1.4 for DAC interpolation filter characteristics.
DAC Output to Class-D SPEAKER OUTPUT; Load = 4 Ω (Differential), 50 pF
SPKVDD 3.6 V, BTL measurement, DAC input = 0
dBFS, CM = 1.8 V, class-D gain = 6 dB, THD ≤ –16.5 2.3
dB
Output voltage Vrms
SPKVDD = 3.6 V, BTL measurement, DAC input = –2
dBFS, CM = 1.8 V, class-D gain = 6 dB, THD ≤ –20 2.1
dB
SPKVDD = 3.6 V, BTL measurement, DAC input =
Output, common-mode 1.8 V
mute, class-D gain = 6 dB
SPKVDD = 3.6 V, BTL measurement, class-D gain =
SNR Signal-to-noise ratio 6 dB, measured as idle-channel noise, A-weighted 88 dB
(with respect to full-scale output value of 2.3 Vrms)
SPKVDD = 3.6 V, BTL measurement, DAC input = –6
THD Total harmonic distortion –65 dB
dBFS, CM = 1.8 V, class-D gain = 6 dB
Total harmonic distortion + SPKVDD = 3.6 V, BTL measurement, DAC input = –6
THD+N –63 dB
noise dBFS, CM = 1.8 V, class-D gain = 6 dB
SPKVDD = 3.6 V, BTL measurement, ripple on
PSRR Power-supply rejection ratio
(1)
–44 dB
SPKVDD = 200 mVp-p at 1 kHz
Mute attenuation 110 dB
SPKVDD = 3.6 V, BTL measurement, CM = 1.8 V,
1
class-D gain = 18 dB, THD = 10%
SPKVDD = 4.3 V, BTL measurement, CM = 1.8 V,
P
O
Maximum output power 1.5 W
class-D gain = 18 dB, THD = 10%
SPKVDD = 5.5 V, BTL measurement, CM = 1.8 V,
2.5
class-D gain = 18 dB, THD = 10%
(1) DAC to headphone-out PSRR measurement is calculated as PSRR = 20 × log(ΔV
HPOUT
/ ΔV
HPVDD
).
Copyright © 2010–2012, Texas Instruments Incorporated ELECTRICAL SPECIFICATIONS 7
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