VCA8500 Datasheet, PDF (7/15 Pages) Texas Instruments – 8-Channel, Ultra-Low Power Variable Gain Amplifier with Low-Noise Pre-Amp

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TERMINAL
PIN NO.
NAME
21
OUT2
22
OUT2
23
OUT1
24
OUT1
25
OUT5
26
OUT5
27
OUT6
28
OUT6
29
OUT7
30
OUT7
31
OUT8
32
OUT8
33
AVDD1
34
VREFL
35
VREFH
36
VB4
37
VB6
38
VB2
39
AVDD2
40
IN8
41
VBL8
42
IN7
43
VBL7
44
IN6
45
VBL6
46
AVDD1
47
IN5
48
VBL5
49
PD
50
CW0
51
CW1
52
CW2
53
CW3
54
CW4
55
D_IN
56
CLK
57
D_OUT
58
RST
59
DVDD
60
CW5
61
CW6
62
CW7
63
CW8
64
CW9
—
GND
VCA8500
Table 1. TERMINAL FUNCTIONS (continued)
SBOS390 – JANUARY 2008
I/O
DESCRIPTION
O
PGA output channel 2 (inverted)
O
PGA output channel 2
O
PGA output channel 1 (inverted)
O
PGA output channel 1
O
PGA output channel 5 (inverted)
O
PGA output channel 5
O
PGA output channel 6 (inverted)
O
PGA output channel 6
O
PGA output channel 7 (inverted)
O
PGA output channel 7
O
PGA output channel 8 (inverted)
O
PGA output channel 8
+3.3V analog supply
Clamp level low, 2.0V; bypass with 0.1µF (min)
Clamp level high, 2.7V; bypass with 0.1µF (min)
Internal bias voltage; bypass with 0.1µF (min)
Internal bias voltage; bypass with 0.1µF (min)
Internal bias voltage; bypass with 0.1µF (min)
+5V analog supply (VCA, CW)
I
LNA input channel 8
Internal bias voltage; bypass with 0.1µF (min)
I
LNA input channel 7
Internal bias voltage; bypass with 0.1µF (min)
I
LNA input channel 6
Internal bias voltage; bypass with 0.1µF (min)
+3.3V analog supply
I
LNA input channel 5
Internal bias voltage; bypass with 0.1µF (min)
I
Power-down pin for fast mode; active high
O
CW channel 0 current output
O
CW channel 1 current output
O
CW channel 2 current output
O
CW channel 3 current output
O
CW channel 4 current output
I
Serial data input
I
Clock input for serial interface
O
Serial data output
I
Reset input; rising edge resets register to default values.
+3.3V Digital supply; connect to analog supply plane (AVDD1)
CW channel 5 current output
CW channel 6 current output
CW channel 7 current output
CW channel 8 current output
CW channel 9 current output
PowerPAD must be connected to the analog ground of the printed circuit board; use this ground for
bypass cap return ground.
Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): VCA8500
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