The TDA1554Q is an integrated class-B output amplifier in a 17-lead single-in-line (SIL) plastic power package. The circuit contains 4 x 11 W single-ended or 2 x 22 W bridge amplifiers. The device is primarily developed for car radio applications.
Functional Description
The TDA1554Q contains four identical amplifiers with differential input stages (two inverting and two non-inverting) and
can be used for single-ended or bridge applications. The gain of each amplifier is fixed at 20 dB (26 dB in BTL). A special
feature of this device is:
- Low stand-by current (< 100 µA)
- Low mute/stand-by switching current (low cost supply switch)
- Mute facility
TDA1554 Pinout
TDA1554 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | NINV1 | Non-Inverting Input 1 |
| 2 | INV1 | Inverting Input 1 |
| 3 | GND | Ground Signal |
| 4 | RR | Supply Voltage Ripple Rejection |
| 5 | VP1 | Positive Supply Voltage 1 |
| 6 | OUT1 | Output 1 |
| 7 | GND1 | Power Ground 1 (Substrate) |
| 8 | OUT2 | Output 2 |
| 9 | N.C | No Connection |
| 10 | OUT3 | Output 3 |
| 11 | GND2 | Power Ground 2 (Substrate) |
| 12 | OUT4 | Output 4 |
| 13 | VP2 | Positive Supply Voltage 2 |
| 14 | M/SS | Mute/Stand-By Switch |
| 15 | N.C | No Connection |
| 16 | INV2 | Inverting Input 2 |
| 17 | NINV2 | Non-Inverting Input 2 |
TDA1554 Features
- Requires very few external components
- Flexibility in use − Quad single-ended or stereo BTL
- High output power
- Low offset voltage at outputs (important for BTL)
- Fixed gain
- Good ripple rejection
- Mute/stand-by switch
- Load dump protection
- AC and DC short-circuit-safe to ground and VP
- Thermally protected
- Reverse polarity safe
- Capability to handle high energy on outputs (VP = 0 V)
- Protected against electrostatic discharge
- No switch-on/switch-off plop
- Low thermal resistance
- Identical inputs (inverting and non-inverting)
- Flexible leads
Application
You can download this datasheet for TDA1554Q Four Amplifier IC from the link given below:
