TDA8947J/N3,112 NXP Semiconductors, TDA8947J/N3,112 Datasheet - Page 7

• Manufacturer Part Number: TDA8947J/N3,112
• Description: IC AMP AUDIO PWR 29W QUAD 17SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TDA8947J/N3,112

• Output Type: 4-Channel (Quad)
• Package / Case: 17-SIL (Bent and Staggered Leads)
• Max Output Power X Channels @ Load: 29W x 2 @ 8 Ohm; 14W x 4 @ 4 Ohm
• Voltage - Supply: 9 V ~ 26 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Product: Class-AB
• Output Power: 29 W
• Available Set Gain: 32 dB
• Thd Plus Noise: 0.05 %
• Operating Supply Voltage: 18 V
• Maximum Power Dissipation: 69000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Audio Load Resistance: 8 Ohms
• Input Signal Type: Single
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential, Single
• Supply Type: Single
• Supply Voltage (max): 26 V
• Supply Voltage (min): 9 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3458-5; 935274472112; TDA8947J

Philips Semiconductors
9397 750 14938
Product data sheet
8.4 Supply voltage ripple rejection
On — The amplifier is operating normally. The On mode is activated at
V
The output channels 3 and 4 can be switched on/off by applying a proper DC voltage to
pin MODE2, under the condition that the output channels 1 and 2 are in the On mode (see
Figure
Table 5:
The Supply Voltage Ripple Rejection (SVRR) is measured with an electrolytic capacitor of
150 F on pin SVR using a bandwidth of 20 Hz to 22 kHz.
as function of the frequency. A larger capacitor value on pin SVR improves the ripple
rejection behavior at the lower frequencies.
Voltage on pin
MODE1
0 V to 0.8 V
4.5 V to (V
(V
Fig 3. Mode selection
MODE1
CC
2.0 V) to V
3).
> (V
CC
Mode selection
CC
all standby
mdb016
3.5 V)
CC
2.0 V). The output of channels 3 and 4 can be set to Mute or On mode.
0.8
MODE2
0 V to V
0 V to V
0 V to (V
(V
Rev. 02 — 16 June 2005
CC
4.5
channels 3
2 V) to V
CC
CC
CC
3.5 V)
4: mute
all mute
CC
Channel 1 and 2
Standby mode
Mute mode
On mode
On mode
V
V
CC
CC
3.5
3.5
V
V
CC
channels 1
channels 3
channels 3
CC
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Figure 11
2.0
2.0
4-channel audio amplifier
V
V
MODE1
MODE2
V
V
CC
CC
2: on
4: on or mute
4: on
Channel 3 and 4
(sub woofer)
Standby mode
Mute mode
Mute mode
On mode
TDA8947J
illustrates the SVRR
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