8229
Features
- High power : Pout (1) = 2.5 W (typ.) (VCC = 9 V, RL = 4 Ω, f = 1 k Hz, THD = 10%) Pout (2) = 4.6 W (typ.) (VCC = 12 V, RL = 3 Ω, f = 1 k Hz, THD = 10%)
- Low popping noise at power ON
- Small quiescent current
: ICCQ = 21 m A (typ.) (VCC = 15 V, Vin = 0)
- Soft clip
- Built-in thermal shut down protection circuit
- Best for supply voltage 9 V, 12 V
- Operation supply voltage range: VCC (opr) = 6~15 V (Ta = 25°C)
Weight: 3.9 g (typ.)
TA8229K
1 2002-03-05
Block Diagram
TA8229K
2 2002-03-05
Application Information and Application Method
1. Adjustment of voltage gain
The voltage gain Gv is obtained as follows by R1, R2 and Rf in Figure 1.
Gv
=
20 log
Rf + R1 + R2 Rf + R1
When Rf = 0 Ω
Gv = 56.5d B (typ.)
When Rf = 120 Ω Gv = 45d B (typ.)
TA8229K
Figure 1
By increasing Rf, reduction of Gv is possible. However, since the feedback increase is liable to produce oscillation, it is remended to use this at 40d B or over.
2. Thermal shut-down circuit
The thermal shut-down...
