VCA8500_0803 Datasheet, PDF (8/40 Pages) Texas Instruments – 8-Channel, Ultralow-Power, Variable Gain Amplifier with Low-Noise Pre-Amp

VCA8500
SBOS390A – JANUARY 2008 – REVISED MARCH 2008
FUNCTIONAL BLOCK DIAGRAM
DVDD
AVDD1
AVDD2
GND
D_IN
D_OUT
RST
CLK
PD
Serial Digital Interface (SDI)
and Logic
8
V/I
CW Switch Matrix
(8 in x 10 out)
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CW0
CW1
CW2
CW3
CW4
CW5
CW6
CW7
CW8
CW9
IN1
VBL1
IN2
VBL2
IN3
VBL3
IN4
VBL4
IN5
VBL5
IN6
VBL6
IN7
VBL7
IN8
VBL8
LNA
LNA
LNA
LNA
LNA
LNA
LNA
LNA
Reference
VB1 VB2 VB3 VB4 VB5 VB6
VCA
PGA
VCA
PGA
VCA
PGA
VCA
PGA
VCA
PGA
VCA
PGA
VCA
PGA
VCA
PGA
Clamp
Clamp
Clamp
Clamp
Clamp
Clamp
Clamp
Clamp
OUT1
LPF
OUT1
OUT2
LPF
OUT2
OUT3
LPF
OUT3
OUT4
LPF
OUT4
OUT5
LPF
OUT5
OUT6
LPF
OUT6
OUT7
LPF
OUT7
OUT8
LPF
OUT8
V_CNTL
V_REFH V_REFL
V_CM
8
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