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부품번호 | TS4997 기능 |
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기능 | 2 x 1W differential input stereo audio amplifier | ||
제조업체 | STMicroelectronics | ||
로고 | |||
전체 30 페이지수
www.DataSheet4U.com
TS4997
2 x 1W differential input stereo audio amplifier
with programmable 3D effects
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.
■ 80dB PSRR @ 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 TS4997 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.
3D effects enhancement is programmed through
a two digital input pin interface that allows more
flexibility on each output audio sound channel.
QFN16 4x4mm
Pin connections (top view)
3D0 3D1 BYP VCC
16 15 14 13
LIN-
LIN+
1
2
RIN+ 3
RIN- 4
12 LOUT-
11 LOUT+
10 ROUT+
9 ROUT-
56 78
GND GND STBYR STBYL
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.
February 2007
Rev 2
1/34
www.st.com
34
Absolute maximum ratings
2 Absolute maximum ratings
TS4997
Table 2. Absolute maximum ratings
Symbol
VCC
Vi
Toper
Tstg
Tj
Rthja
Pd
ESD
Parameter
Supply voltage (1)
Input voltage (2)
Operating free air temperature range
Storage temperature
Maximum junction temperature
Thermal resistance junction to ambient
Power dissipation
Human body model (3)
Digital pins STBYL, STBYR, 3D0, 3D1
Value
6
GND to VCC
-40 to + 85
-65 to +150
150
120
Internally limited
2
1.5
Unit
V
V
°C
°C
°C
°C/W
kV
ESD
Machine model
Latch-up immunity
200 V
200 mA
1. All voltage values are measured with respect to the ground pin.
2. The magnitude of the input signal must never exceed VCC + 0.3V / GND - 0.3V.
3. All voltage values are measured from each pin with respect to supplies.
Table 3. Operating conditions
Symbol
Parameter
Value
Unit
VCC
VICM
VIL
VIH
VSTBY
Supply voltage
Common mode input voltage range
3D0 - 3D1 maximum low input voltage
3D0 - 3D1 minimum high input voltage
Standby voltage input:
Device ON
Device OFF
RL Load resistor
ROUT/GND Output resistor to GND (VSTBY = GND)
TSD Thermal shutdown temperature
Rthja
Thermal resistance junction to ambient
QFN16(1)
QFN16(2)
2.7 to 5.5
GND to VCC - 1V
0.4
1.3
V
V
V
V
1.3 ≤ VSTBY ≤ VCC
GND ≤ VSTBY ≤0.4
≥4
≥1
150
V
Ω
MΩ
°C
45 °C/W
85
1. When mounted on a 4-layer PCB with vias.
2. When mounted on a 2-layer PCB with vias.
4/34
4페이지 TS4997
Electrical characteristics
Table 6.
Symbol
VCC = +2.7V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Parameter
Min. Typ.
Max.
Unit
ICC
ISTBY
Voo
Po
THD + N
PSRR
Supply current
No input signal, no load, left and right channel active
Standby current (1)
No input signal, VSTBYL = GND, VSTBYR = GND, RL = 8Ω
Output offset voltage
No input signal, RL = 8Ω
Output power
THD = 1% Max, F = 1kHz, RL = 8Ω
Total harmonic distortion + noise
Po = 200mWrms, G = 6dB, RL = 8Ω, 20Hz ≤ F ≤ 20kHz
Power supply rejection ratio(2), inputs grounded
RL = 8Ω, G = 6dB, Cb = 1µF, Vripple = 200mVpp, 3D effect off
F = 217Hz
F = 1kHz
220
6.2 8.1
10 2000
1 35
295
0.5
76
73
mA
nA
mV
mW
%
dB
CMRR
Common mode rejection ratio(3)
RL = 8Ω, G = 6dB, Cb = 1µF, Vincm = 200mVpp, 3D effect off
F = 217Hz
F = 1kHz
57
57
dB
SNR
Signal-to-noise ratio
A-weighted, G = 6dB, Cb = 1µF, RL = 8Ω, 3D effect off
(THD + N ≤ 0.5%, 20Hz < F < 20kHz)
102 dB
Channel separation, RL = 8Ω, G = 6dB, 3D effect off
Crosstalk F = 1kHz
F = 20Hz to 20kHz
105 dB
80
VN
Gain
tWU
tSTBY
ΦM
GM
GBP
Output voltage noise, F = 20Hz to 20kHz, RL = 8Ω, G=6dB
Cb = 1µF, 3D effect off
Unweighted
A-weighted
Gain value (RIN in kΩ)
Wake-up time (Cb = 1µF)
Standby time (Cb = 1µF)
Phase margin at unity gain
RL = 8Ω, CL = 500pF
Gain margin
RL = 8Ω, CL = 500pF
Gain bandwidth product
RL = 8Ω
4-----0-----k---Ω--
RIN
15
10
5-----0-----k---Ω--
RIN
46
10
6-----0-----k---Ω--
RIN
μVrms
V/V
ms
µs
65 Degrees
15 dB
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)).
7/34
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |