TS4974_07 STMICROELECTRONICS [STMicroelectronics], TS4974_07 Datasheet - Page 6

• Manufacturer Part Number: TS4974_07
• Description: 1W differential audio power amplifier with up/down digital volume control pins
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Electrical characteristics
Table 5.
1. Dynamic measurements - 20*log(rms(V
2. Dynamic measurements - 20*log(rms(V
6/25
Gain step
accuracy
t
THD + N
t
Symbol
autorepeat
debounce
CMRR
PSRR
I
t
SNR
Gain
STBY
I
size
range
I
V
Gs
t
V
Z
U/D
P
CC
G
wu
oo
in
N
o
Supply current
No input signal, no load
Standby current
No input signal, V
Volume control UP/DOWN current
0 ≤V
Output offset voltage
No input signal, R
Output power
THD = 1% max, f = 1 kHz, R
Total harmonic distortion + noise
Po = 500 mW rms,
20 Hz < F < 20 kHz, R
Power supply rejection ratio
F = 217 Hz, R
V
Common mode rejection ratio
F = 217 Hz, R
V
Signal-to-noise ratio (weighted A, G= 0 dB)
(R
Start up gain (
Volume setting on page
Gain range
Tolerance between theoretical gain set and real gain
Wake-up time
C
Output voltage noise F = 20 Hz to 20 kHz, R
Differential input impedance
Debouncing time
Time between volume changes
During autorepeat mode, necessary time to cover the whole gain
range
ripple
incm
b
V
Unweighted
A-weighted
L
= 1 µF
CC
= 8 Ω, THD + N ≤ 0.5%, 20 Hz < F < 20 kHz)
U/D
= 200 mV
= 200 mV
= +3.3 V, GND = 0 V, T
≤ 0.3 V
L
L
when powered up from V
pp
CC
= 8 Ω
= 8 Ω,
pp
, C
STBY
L
, input grounded, C
= 8 Ω, G= 0 dB, floating inputs
b
= 1 µF, C
L
= GND, R
= 8 Ω, G = 0 dB, C
20)
out
out
(1)
Parameter
L
)/rms(V
)/rms(V
(2)
= 8 Ω
in
amb
L
= 330 nF, G = 0 dB
= 8 Ω
ripple
incm
= 25° C (unless otherwise specified)
b
)).
= 1 µF, C
)). V
CC
ripple
b
= 1 µF, C
L
-
= 8 Ω, G = 0 dB
See
is an added sinus signal to V
in
= 330 nF, G = 0 dB
Section 4.9:
in
= 330 nF
Min.
300
-33
48
-1
CC
@ F = 217 Hz.
3200
Typ.
260
380
100
220
3.0
0.5
-12
60
10
10
85
61
10
21
14
5
3
Max.
2000
+12
3.6
+1
20
75
TS4974
µV
Unit
mW
mA
mV
ms
ms
ms
ms
nA
μA
dB
dB
dB
dB
dB
dB
dB
kΩ
%
RMS