STMicroelectronics Pop-free 120 mW stereo headphone amplifier DEMOTS488S DEMOTS488S Data Sheet
Product codes
DEMOTS488S
This is information on a product in full production.
May 2012
Doc ID 11971 Rev 5
1/32
32
TS488
TS489
TS489
Pop-free 120 mW stereo headphone amplifier
Datasheet
−
production data
Features
■
Pop and click noise protection circuitry
■
Operating range from V
CC
= 2.2 V to 5.5 V
■
Standby mode active low (TS488) or high (TS489)
■
Output power:
– 120 mW at 5 V, into 16
– 120 mW at 5 V, into 16
Ω
with 0.1% THD+N max (1 kHz)
– 55 mW at 3.3 V, into 16
Ω
with 0.1% THD+N max (1 kHz)
■
Low current consumption: 2.7 mA max at 5 V
■
Ultra-low standby current consumption: 10 nA
typical
typical
■
High signal-to-noise ratio
■
High crosstalk immunity: 102 dB (F = 1 kHz)
■
PSRR: 70 dB typ. (F = 1 kHz), inputs grounded
at 5 V
at 5 V
■
Unity-gain stable
■
Short-circuit protection circuitry
■
Available in lead-free MiniSO-8 & DFN8
2 mm x 2 mm
2 mm x 2 mm
Description
The TS488/9 is an enhancement of TS486/7 that
eliminates pop and click noise and reduces the
number of external passive components.
eliminates pop and click noise and reduces the
number of external passive components.
The TS488/9 is a dual audio power amplifier
capable of driving, in single-ended mode, either a
16
capable of driving, in single-ended mode, either a
16
Ω or a 32 Ω stereo headset.
Capable of descending to low voltages, it delivers
up to 31 mW per channel (into 16
up to 31 mW per channel (into 16
Ω loads) of
continuous average power with 0.1% THD+N in
the audio bandwidth from a 2.5 V power supply.
the audio bandwidth from a 2.5 V power supply.
An externally-controlled standby mode reduces
the supply current to 10 nA (typ.). The unity gain
stable TS488/9 is configured by external gain-
setting resistors.
the supply current to 10 nA (typ.). The unity gain
stable TS488/9 is configured by external gain-
setting resistors.
Applications
■
Headphone amplifiers
■
Mobile phones, PDAs, computer motherboards
■
High-end TVs, portable audio players
TS488IST - MiniSO-8
OUT (1)
4
3
2
1
BYPASS
GND
VCC
OUT (2)
VIN (2)
SHUTDOWN
VIN (1)
5
6
7
8
OUT (1)
4
3
2
1
BYPASS
GND
VCC
OUT (2)
VIN (2)
SHUTDOWN
VIN (1)
5
6
7
8
OUT (1)
4
3
2
1
BYPASS
GND
VCC
OUT (2)
VIN (2)
SHUTDOWN
VIN (1)
5
6
7
8
TS488IQT - DFN8
8
Bypass
GND
Shutdown
Vcc
OUT
(2)
OUT
(1)
7
6
5
1
2
3
4
V
IN (2)
V
IN (1)
8
Bypass
GND
Shutdown
Vcc
OUT
(2)
OUT
(1)
7
6
5
1
2
3
4
V
IN (2)
V
IN (1)
8
8
Bypass
GND
Shutdown
Vcc
OUT
(2)
OUT
(1)
7
7
6
6
5
5
1
1
2
2
3
3
4
4
V
IN (2)
V
IN (1)