Datasheet

TLV320DAC3101
www.ti.com SLAS666A –JANUARY 2010–REVISED MAY 2012
Electrical Characteristics (continued)
At 25°C, AVDD = HPVDD = IOVDD = 3.3 V, SPLVDD, SPRVDD = 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 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 –82 dB
noise
DAC Digital Interpolation Filter Characteristics
See Section 5.5.1.4 for DAC interpolation filter characteristics.
DAC Output to Class-D Speaker Output; Load = 8 Ω (Differential), 50 pF
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
CM = 1.8 V, DAC input = 0 dBFS, 2.2
class-D gain = 6 dB, THD ≤ –16.5 dB
Output voltage Vrms
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
CM = 1.8 V, DAC input = –2 dBFS, 2.1
class-D gain = 6 dB, THD ≤ –20 dB
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
Output, common-mode 1.8 V
DAC input = mute, CM = 1.8 V, class-D gain = 6 dB
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
class-D gain = 6 dB, measured as idle-channel noise,
SNR Signal-to-noise ratio 87 dB
A-weighted (with respect to full-scale output value of
2.2 Vrms)
(1) (2)
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
THD Total harmonic distortion –67 dB
CM = 1.8 V, class-D gain = 6 dB
Total harmonic distortion + SPLVDD = SPRVDD = 3.6 V, BTL measurement,
THD+N –66 dB
noise CM = 1.8 V, class-D gain = 6 dB
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
PSRR Power-supply rejection ratio
(4)
–44 dB
ripple on SPLVDD/SPRVDD = 200 mVp-p at 1 kHz
Mute attenuation 110 dB
SPLVDD = SPRVDD = 3.6 V, BTL measurement,
540
CM = 1.8 V, class-D gain = 18 dB, THD = 10%
mW
SPLVDD = SPRVDD = 4.3 V, BTL measurement,
P
O
Maximum output power 790
CM = 1.8 V, class-D gain = 18 dB, THD = 10%
SPLVDD = SPRVDD = 5.5 V, BTL measurement,
1.29 W
CM = 1.8 V, class-D gain = 18 dB, THD = 10%
(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
).
(4) DAC to speaker-out PSRR measurement is calculated as PSRR = 20 × log(ΔV
SPL(P + M)
/ ΔV
SPLVDD
).
Copyright © 2010–2012, Texas Instruments Incorporated ELECTRICAL SPECIFICATIONS 7
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