DVR-8100
13
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Pin Description
1,13
VBOOT(2,1)
-
Bootstrap voltages for gate drive of high side MOSFET’s.
2
VN10
I
Floating supply input. Normally connected to the output of onboard VN10
buck converter. This voltage must be stable and referenced to VNN.
3
VN10GND
-
Power ground for onboard VN10 generator.
4,12
VPP(1,2)
I
Positive power supply input pins.
5
VN10SW
O
Switching output voltage for onboard VN10 generator (buck converter).
6
NC
-
Not connected internally.
7,10
OUT(2,1)
O
Power amplifier outputs.
8,9
VNN(2,1)
I
Negative power supply input pins.
11
NC
-
Not connected internally.
14
VN10FDBK
-
Feedback for onboard VN10 generator (nominally 11V above VNN).
15,20
AGND
-
Analog ground.
16,21
V5
I
5V power supply input.
17
REF
-
Used to set internal bias current. The pin voltage is typically 1.1V.
18
VNNSENSE
I
Negative supply voltage sense input.
This pin is used for both over and under voltage sensing for the VNN supply.
19
VPPSENSE
I
Positive supply voltage sense input.
This pin is used for both over and under voltage sensing for the VPP supply.
22,25
OAOUT(1,2)
O
Outputs of input stage ope amplifiers.
23,26
INV(1,2)
I
Inverting inputs of input stage ope amplifier.
24
MUTE
I
Logic input. A logic high puts the amplifier in mute mode.
27
BIASCAP
-
Bandgap reference times two (typically 2.5VDC).
Used to set the common mode voltage for the input ope amplifier.
28,29
FBKGND2,FBKOUT2
O
Output voltage differential feedback for channel 2.
30,31
FBKGND1,FBKOUT1
O
Output voltage differential feedback for channel 1.
Logic output. A logic high indicates both amplifiers are muted, due to
32
HMUTE
O
the mute pin state, or a fault such as an overcurrent, undervoltage,
or overvoltage condition.
4-9 Digital Power Amplifier : TA2022 (X09, IC501~503)
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