TA7250,51BP
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA7250BP,TA7251BP
30W BTL Audio Power Amplifier...
TA7250,51BP
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA7250BP,TA7251BP
30W BTL Audio Power Amplifier
The TA7250BP, TA7251BP are BTL audio power amplifier for consumer applications. This IC provides high output power of 23W and also provides wide output power band width. Normal (TA7250BP) and reverse (TA7251BP) for easier layout design of PC−board when used in BTL−stereo application.
Features
· High output power
: POUT (1) = 23W (typ.) (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 4Ω)
: POUT (2) = 30W (typ.) (VCC = 13.2V, f = 1kHz, THD = 10%, RL = 2Ω)
Weight: 4.04g (typ.)
· Excellent output power band width
: POUT (3) = 18W (typ.) (VCC = 13.2V, f = 50Hz~20kHz, THD = 1%, RL = 4Ω)
· Low distortion
: THD = 0.015% (typ.) (VCC = 13.2V, f = 1kHz, POUT = 4W, RL = 4Ω)
· Built in protector circuit
: Thermal shout down, over
voltage protection (typ. VCC = 21V) ASO protection (RL short, Out to GND, Out to VCC)
· Operating supply
voltage range: VCC (opr.) = 9~18V
1 2002-10-30
Block Diagram
TA7250,51BP
2 2002-10-30
TA7250,51BP
Application Information (this explanatory terminal number is for TA7250BP)
1.
Voltage gain
The closed loop
voltage gain: GV is determined by Rf1, Rf2 and R0. If Ro≫Rf1 > Rf2
GV≒20ℓog
Rf1 Rf2
+6
(dB)
(R0 is established 20kΩ) Care must be taken, sine the current “I” flows to Rf1 and Rf2 from quiescent output
voltage at pin(12) / (7) and it is
impossible decrease so much Rf1 and Rf2. When GV = 40dB, it is recommended to use Rf1 for ...