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| TA1101B Datasheet, PDF (3/13 Pages) Tripath Technology Inc. – Stereo 10W (4Ω) Class-T™ Digital Audio Amplifier using Digital Power Processing™ Technology | |||
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TECHNICAL INFORMATION
Pin Description
Pin
Function
1, 2
DCAP2, DCAP1
3, 8
4, 7,
15
5
6
9, 12
10, 13
11
14
16
17
18, 28
19
20, 22;
25, 23
21, 24
26
27
29
30
V5D, V5A
AGND1, AGND2,
AGND3
REF
OVERLOADB
VP1, VP2
IN1, IN2
MUTE
BIASCAP
SLEEP
FAULT
PGND2, PGND1
DGND
OUTP2 & OUTM2;
OUTP1 & OUTM1
VDD2, VDD1
NC
VDDA
CPUMP
5VGEN
Description
Charge pump switching pins. DCAP1 (pin 2) is a free running 300kHz square
wave between VDDA and DGND (12Vpp nominal). DCAP2 (pin 1) is level shifted
10 volts above DCAP1 (pin 2) with the same amplitude (12Vpp nominal),
frequency, and phase as DCAP1.
Digital 5VDC, Analog 5VDC
Analog Ground
Internal reference voltage; approximately 1.0 VDC.
A logic low output indicates the input signal has overloaded the amplifier.
Input stage output pins.
Single-ended inputs. Inputs are a âvirtualâ ground of an inverting opamp with
approximately 2.4VDC bias.
When set to logic high, both amplifiers are muted and in idle mode. When low
(grounded), both amplifiers are fully operational. If left floating, the device stays in
the mute mode. Ground if not used.
Input stage bias voltage (approximately 2.4VDC).
When set to logic high, device goes into low power mode. If not used, this pin
should be grounded
A logic high output indicates thermal overload, or an output is shorted to ground,
or another output.
Power Grounds (high current)
Digital Ground
Bridged outputs
Supply pins for high current H-bridges, nominally 12VDC.
Not connected
Analog 12VDC
Charge pump output (nominally 10V above VDDA)
Regulated 5VDC source used to supply power to the input section (pins 3 and 8).
30-pin Power SOP Package
(Top View)
DCAP2
1
DCAP1
2
V5D
3
AGND1
4
REF
5
OVERLOADB
6
AGND2
7
V5A
8
VP1
9
IN1
10
MUTE
11
VP2
12
IN2
13
BIASCAP
14
AGND3
15
30
5VGEN
29
CPUMP
28
PGND1
27
VDDA
26
NC
25
OUTP1
24
VDD1
23
OUTM1
22
OUTM2
21
VDD2
20
OUTP2
19
DGND
18
PGND2
17
FAULT
16
SLEEP
TA1101B, Rev. 2.2, 08.17.00
3
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