datasheetbank_Logo
Integrated circuits, Transistor, Semiconductors Search and Datasheet PDF Download Site

TS4871 View Datasheet(PDF) - STMicroelectronics

Part Name
Description
View to exact match
TS4871 Datasheet PDF : 28 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
TS4871
ELECTRICAL CHARACTERISTICS
VCC = 2.6V, GND = 0V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Unit
ICC
Supply Current
No input signal, no load
5.5
8
ISTANDBY
Standby Current 1)
No input signal, Vstdby = Vcc, RL = 8
10 1000
Voo
Output Offset Voltage
No input signal, RL = 8
5
20
Po
Output Power
THD = 1% Max, f = 1kHz, RL = 8
260
THD + N
Total Harmonic Distortion + Noise
Po = 200mW rms, Gv = 2, 20Hz < f < 20kHz, RL = 8
0.15
PSRR Power Supply Rejection Ratio2)
75
f = 217Hz, RL = 8Ω, RFeed = 22KΩ, Vripple = 200mV rms
ΦM
Phase Margin at Unity Gain
RL = 8, CL = 500pF
70
Gain Margin
GM
RL = 8, CL = 500pF
20
Gain Bandwidth Product
GBP
RL = 8
2
1. Standby mode is actived when Vstdby is tied to Vcc
2. Dynamic measurements - 20*log(rms(Vout)/rms(Vripple)). Vripple is the surimposed sinus signal to Vcc @ f = 217Hz
mA
nA
mV
mW
%
dB
Degrees
dB
MHz
Components
Functional Description
Rin
Cin
Rfeed
Cs
Cb
Cfeed
Rstb
Gv
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))
Input coupling capacitor which blocks the DC voltage at the amplifier input terminal
Feed back resistor which sets the closed loop gain in conjunction with Rin
Supply Bypass capacitor which provides power supply filtering
Bypass pin capacitor which provides half supply filtering
Low pass filter capacitor allowing to cut the high frequency
(low pass filter cut-off frequency 1 / (2 x Pi x Rfeed x Cfeed))
Pull-up resistor which fixes the right supply level on the standby pin
Closed loop gain in BTL configuration = 2 x (Rfeed / Rin)
REMARKS
1. All measurements, except PSRR measurements, are made with a supply bypass capacitor Cs = 100µF.
2. External resistors are not needed for having better stability when supply @ Vcc down to 3V. By the way,
the quiescent current remains the same.
3. The standby response time is about 1µs.
4/28
 

Share Link: 

datasheetbank.com [ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]