TA8227P
DESCRIPTION
The UTC TA8227P is an audio power IC with built-in two channels developed for portable radio cassette tape recorder with power ON / OFF switch. Because of the parts reduction and DIP, space merit is remarkable. Thermal shut down protection circuit is built in.
FEATURES
- Wide operating supply voltage: Vcc=5~12V
- Low popping noise at power ON
- Best for supply voltage 9V
- Output power Po=2.5W/CH at Vcc=9V, RL=4Ω, f=1k Hz, THD=10% Po=3.0W/CH at Vcc=9V, RL=3Ω, f=1k Hz, THD=10%
- Soft Clip
- Built-in Thermal shut-down protection circuit
- Stand-by Switch
DIP-12H
BLOCK DIAGRAM
UNISONIC TECHNOLOGIES CO., LTD.
QW-R107-011,B
UTC TA8227P
1. Adjustment of voltage gain
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION AND APPLICATION METHOD
The voltage gain Gv is obtained as follows by R1, R2 and Rf in Fig.1
When Rf=0Ω When Rf=120Ω
Gv=56.5 d B (Typ.) Gv=45 d B (Typ.)
By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce...
