Ta2024 General - Changhong Electric PT4206 Service Manual

5 TA2024 general:

2.2.
The TA2024 is a 10W/ch continuous average two-channel Class-T Digital Audio Power
Amplifier IC using Tripath's proprietary Digital Power Processing™ technology. Class-T
amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D
amplifiers.
Pin Function Descriptions
Pin(s)
2, 3 DCAP2, DCAP1
4, 9 V5D, V5A
5, 8, 17 AGND1, AGND2, AGND3
6 REF
7 OVERLOADB
10 14 OAOUT1, OAOUT2
11, 15 INV1, INV2
12 MUTE
16 BIASCAP
18 SLEEP
19 FAULT
20, 35 PGND2, PGND1
22 DGND
24, 27; 31, 28 OUTP2 & OUTM2; OUTP1
& OUTM1
25, 26, 29, 30 VDD2,
VDD1
13, 21, 23, 32, 34 NC
33 VDDA
36 CPUMP
1 5VGEN
Name
Charge pump switching pins
Digital 5VDC, Analog 5VDC
Analog Ground
Internal reference voltage
A logic low output indicates the input signal
has overloaded the amplifier
Input stage output pins.
Single-ended inputs
Mute control
Input stage bias voltage
Sleep mode control
A logic high output indicates thermal
overload
Power Grounds (high current)
Digital Ground
Bridged outputs
VDD2 VDD1, Supply pins for high current H-bridges,
nominally 12VDC.
Not connected
Analog 12VDC
Charge pump output
Regulated 5VDC source used to supply
power to the input section (pins 4 and 9).
17
Function