Datasheet

TPA6141A2
www.ti.com .................................................................................................................................................... SLOS634A –MARCH 2009–REVISED AUGUST 2009
ELECTRICAL CHARACTERISTICS
T
A
= 25°C (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
PSRR Power supply rejection ratio AVDD = 2.5 V to 5.5 V, inputs grounded, GAIN = 0 dB 90 105 dB
CMRR Common mode rejection ratio HPVDD = 1.3 V to 1.8 V, GAIN = 0 dB 68 dB
|I
IH
| High-level input current AVDD = 2.5 V to 5.5 V, V
I
= AVDD EN, GAIN 1 µA
|I
IL
| Low-level input current AVDD = 2.5 V to 5.5 V, V
I
= 0 V EN, GAIN 1 µA
I
SD
Shutdown current EN = 0 V, AVDD = 2.5 V to 5.5 V 1 3 μA
AVDD = 3.6 V HPVDD = 1.3 V, Amplifiers active, no load, no
1.2 2.0
input signal
AVDD = 3.6 V, P
OUT
= 100 μW into 32 Ω
(1)
, f
AUD
= 1 kHz 2.5
I
DD
Total supply current mA
AVDD = 3.6 V, P
OUT
= 500 μW into 32 Ω
(1)
, f
AUD
= 1 kHz 4.0
AVDD = 3.6 V, P
OUT
= 1 mW into 32 Ω
(1)
, f
AUD
= 1 kHz 6.8
(1) Per channel output power assuming a 10 dB crest factor
OPERATING CHARACTERISTICS
AV
DD
= 3.6 V , T
A
= 25°C, GAIN = 0 dB, R
L
= 32 Ω (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AVDD = 2.7 V, THD = 1%, f = 1 kHz 26
P
O
Output power
(1)
(Outputs in Phase) AVDD = 2.7 V, THD = 10%, f = 1 kHz 32 mW
AVDD = 2.7 V, THD = 1%, f = 1 kHz, R
L
= 16Ω 25
P
O
= 10 mW into 16 Ω, f = 1 kHz 0.02%
Total harmonic distortion plus
THD+N
noise
(2)
P
O
= 20 mW into 32 Ω, f = 1 kHz 0.01%
200 mVpp ripple, f = 217 Hz 80 100
k
SVR
AC-Power supply rejection ratio dB
200 mVpp ripple, f = 4 kHz 90
GAIN = logic low 0 dB
Closed–loop voltage gain (OUT /
A
V
IN–)
GAIN = logic high 6 dB
ΔA
V
Gain matching Between left and right channels 1%
V
OS
Output offset voltage AVDD = 2.5 V to 5.5 V, inputs grounded 0.5 0 0.5 mV
E
N
Noise output voltage A-weighted 5.3 µV
RMS
f
BUCK
Buck converter switching frequency P
O
= 0.5 mW, f = 1 kHz 600 kHz
P
O
= 0.5 mW, f = 1 kHz 315
f
PUMP
Charge pump switching frequency kHz
P
O
= 15 mW, f = 1 kHz 1260
Start-up time from shutdown 5 ms
R
IN,SE
Single Ended Input impedance Gain = 6 dB, per input node 13.2 kΩ
R
IN,DF
Differential input impedance Gain = 6 dB, per input node 26.4 kΩ
SNR Signal-to-noise ratio V
OUT
= 1 V
RMS
, GAIN = 6 dB, no load 105 dB
Threshold 165
Thermal shutdown °C
Hysteresis 35
Z
O,SD
Output impedance in shutdown EN = logic low, DC value 8 kΩ
Input to Output attenuation in
EN = logic low, f = 1 kHz, V
OUT
= 1 V
RMS
90 dB
shutdown
Crosstalk P
O
= 15 mW, f = 1 kHz –80 dB
V
CM
Input common-mode voltage range 0 1.4 V
(1) Per channel output power
(2) A-weighted
Copyright © 2009, Texas Instruments Incorporated 5
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