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TDA8946AJ Datasheet Preview

TDA8946AJ Datasheet

2 x 15 W BTL audio amplifier

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TDA8946AJ
2 x 15 W BTL audio amplifier with DC gain control
Rev. 01 — 01 March 2002
M3D541
Product data
1. General description
The TDA8946AJ is a dual-channel audio power amplifier with DC gain control. It has
an output power of 2 × 15 W at an 8 load and an 18 V supply. The circuit contains
two Bridge-Tied Load (BTL) amplifiers with an all-NPN output stage and
standby/mute logic. The overall gain can be adjusted from +30 dB down to 50 dB
using a DC control voltage. This feature can be used for volume control or for a preset
gain. The TDA8946AJ comes in a 17-pin DIL-bent-SIL (DBS) power package and is
pin compatible with the TDA8946J.
2. Features
s Gain/volume adjustment via a DC control pin
s Soft clipping
s Operating at a low supply voltage
s Standby and mute mode
s No on/off switching plops
s Low standby current
s High supply voltage ripple rejection
s Outputs short-circuit protected to ground, supply and across the load
s Thermally protected
s Printed-circuit board compatible with TDA8944AJ and TDA8580J.
3. Applications
s Mains fed applications (e.g. TV sound)
s PC audio
s Portable audio.
4. Quick reference data
Table 1: Quick reference data
Symbol Parameter
VCC supply voltage
Iq quiescent supply current
Istb standby supply current
Po output power
THD total harmonic distortion
Conditions
VCC = 18 V; RL =
THD = 10%; RL = 8 ;
VCC = 18 V
Po = 1 W
Min Typ Max Unit
4.5 18 18 V
- 45 55 mA
- - 10 µA
13 15 -
W
- 0.07 0.5 %




Philips

TDA8946AJ Datasheet Preview

TDA8946AJ Datasheet

2 x 15 W BTL audio amplifier

No Preview Available !

Philips Semiconductors
TDA8946AJ
2 x 15 W BTL audio amplifier with DC gain control
Table 1: Quick reference data…continued…continued
Symbol Parameter
Conditions
Gv(max) maximum voltage gain
Gv(cr) voltage gain control range
SVRR supply voltage ripple
rejection
Min Typ Max Unit
29 30 31 dB
- 80 - dB
- 55 - dB
5. Ordering information
Table 2: Ordering information
Type number Package
Name
Description
Version
TDA8946AJ DBS17P plastic DIL-bent-SIL power package; 17 leads (lead SOT243-1
length 12 mm)
6. Block diagram
idth VCC1 VCC2
3 16
IN1
IN1+
8
6
1 OUT1
4
OUT1+
13
GC
TDA8946AJ
IN2
IN2+
MODE
SVR
14
9
12
17
10 STANDBY/
MUTE LOGIC
11
7
SGND
VCC
20
kSHORT CIRCUIT
AND
TEMPERATURE
20 PROTECTION
k
2 15
GND1 GND2
MGW608
OUT2
OUT2+
Fig 1. Block diagram.
9397 750 09434
Product data
Rev. 01 — 01 March 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
2 of 20


Part Number TDA8946AJ
Description 2 x 15 W BTL audio amplifier
Maker Philips
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