參數(shù)資料
型號: TS4900ID
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
封裝: PLASTIC, SO-8
文件頁數(shù): 14/19頁
文件大小: 538K
代理商: TS4900ID
Obsolete
Product(s)
- Obsolete
Product(s)
TS4900
4/19
N
O
T
F
O
R
NEW
D
ES
IG
N
ELECTRICAL CHARACTERISTICS
VCC = 2.6V, GND = 0V, Tamb = 25°C (unless otherwise specified)
REMARKS
1. All measurements, except PSRR measurements, are made with a supply bypass capacitor Cs = 100F.
2. The standby response time is about 1s.
Symbol
Parameter
Min.
Typ.
Max.
Unit
ICC
Supply Current
No input signal, no load
5.5
8
mA
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8
1. Standby mode is actived when Vstdby is tied to Vcc
10
1000
nA
Voo
Output Offset Voltage
No input signal, RL = 8
520
mV
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
180
mW
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
0.15
%
PSRR
Power Supply Rejection Ratio2)
f = 217Hz, RL = 8
, RFeed = 22K, Vripple = 200mV rms
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
75
dB
ΦM
Phase Margin at Unity Gain
RL = 8, CL = 500pF
70
Degrees
GM
Gain Margin
RL = 8, CL = 500pF
20
dB
GBP
Gain Bandwidth Product
RL = 8
2MHz
Components
Functional Description
Rin
Inverting input resistor which sets the closed loop gain in conjunction with Rfeed. This resistor also
forms a high pass filter with Cin (fc = 1 / (2 x Pi x Rin x Cin))
Cin
Input coupling capacitor which blocks the DC voltage at the amplifier input terminal
Rfeed
Feed back resistor which sets the closed loop gain in conjunction with Rin
Cs
Supply Bypass capacitor which provides power supply filtering
Cb
Bypass pin capacitor which provides half supply filtering
Cfeed
Low pass filter capacitor allowing to cut the high frequency
(low pass filter cut-off frequency 1 / (2 x Pi x Rfeed x Cfeed))
Rstb
Pull-up resistor which fixes the right supply level on the standby pin
Gv
Closed loop gain in BTL configuration = 2 x (Rfeed / Rin)
相關(guān)PDF資料
PDF描述
TS4900IDT 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TS4902IDT 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TS4902ID 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TS4902IST 0.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO8
TS4956EIJT 1.055 W, 2 CHANNEL, AUDIO AMPLIFIER, PBGA18
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