TS4998 Datasheet PDF - STMicroelectronics
| Part Number | TS4998 | |
| Description | 2 x 1W differential input stereo audio amplifier | |
| Manufacturers | STMicroelectronics | |
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TS4998
2 x 1W differential input stereo audio amplifier
Features
■ Operating range from VCC= 2.7V to 5.5V
■ 1W output power per channel @ VCC=5V,
THD+N=1%, RL=8Ω
■ Ultra low standby consumption: 10nA typ.
www.Data■She8e0td4UB.cPoSmRR @ 217Hz with grounded inputs
■ High SNR: 106dB(A) typ.
■ Fast startup time: 45ms typ.
■ Pop&click-free circuit
■ Dedicated standby pin per channel
■ Lead-free QFN16 4x4mm package
Applications
■ Cellular mobile phones
■ Notebook and PDA computers
■ LCD monitors and TVs
■ Portable audio devices
Description
The TS4998 is designed for top-class stereo
audio applications. Thanks to its compact and
power-dissipation efficient QFN16 package with
exposed pad, it suits a variety of applications.
With a BTL configuration, this audio power
amplifier is capable of delivering 1W per channel
of continuous RMS output power into an 8Ω load
@ 5V.
Each output channel (left and right), also has its
own external controlled standby mode pin to
reduce the supply current to less than 10nA per
channel. The device also features an internal
thermal shutdown protection.
The gain of each channel can be configured by
external gain setting resistors.
QFN16 4x4mm
Pin connections (top view)
December 2007
Rev 1
1/33
www.st.com
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TS4998
3 Electrical characteristics
Electrical characteristics
Table 4.
Symbol
VCC = +5V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Parameter
Min. Typ.
Max.
Unit
ICC
Supply current
No input signal, no load, left and right channel active
ISTBY
Standby current (1)
No input signal, VSTBYL = GND, VSTBYR = GND, RL = 8Ω
Voo
Output offset voltage
No input signal, RL = 8Ω
Po
Output power
THD = 1% max, F = 1kHz, RL = 8Ω
www.DataSheet4U.com
THD + N
Total harmonic distortion + noise
Po = 700mWrms, G = 6dB, RL = 8Ω, 20Hz ≤ F ≤ 20kHz
Power supply rejection ratio(2), inputs grounded
PSRR
RL = 8Ω, G = 6dB, Cb = 1µF, Vripple = 200mVpp
F = 217Hz
F = 1kHz
7.4 9.6
10 2000
1 35
800 1000
0.5
mA
nA
mV
mW
%
dB
80
75
CMRR
Common mode rejection ratio(3)
RL = 8Ω, G = 6dB, Cb = 1µF, Vincm = 200mVpp
F = 217Hz
F = 1kHz
dB
57
57
SNR
Signal-to-noise ratio
A-weighted, G = 6dB, Cb = 1µF, RL = 8Ω
(THD + N ≤ 0.5%, 20Hz < F < 20kHz)
108 dB
Channel separation, RL = 8Ω, G = 6dB
Crosstalk F = 1kHz
F = 20Hz to 20kHz
105 dB
80
VN
Gain
Output voltage noise, F = 20Hz to 20kHz, RL = 8Ω, G=6dB
Cb = 1µF
Unweighted
A-weighted
Gain value (RIN in kΩ)
4-----0-----k---Ω--
RIN
15
10
5-----0-----k---Ω--
RIN
6-----0-----k---Ω--
RIN
µVrms
V/V
tWU Wake-up time (Cb = 1µF)
46 ms
tSTBY Standby time (Cb = 1µF)
10 µs
ΦM
Phase margin at unity gain
RL = 8Ω, CL = 500pF
65 Degrees
GM Gain margin, RL = 8Ω, CL = 500pF
15 dB
GBP Gain bandwidth product, RL = 8Ω
1.5 MHz
1. Standby mode is active when VSTBY is tied to GND.
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the sinusoidal signal superimposed upon VCC.
3. Dynamic measurements - 20*log(rms(Vout)/rms(Vincm)).
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TS4998 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ TS4998.PDF Datasheet ] | |
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