VP211
Dual 90MHz 6-Bit Analog to Digital Converter
Preliminary Information
DS4476 - 1.1 May 1996
The VP211 is a dual 90MHz 6-bit Analog to Digital
Converter designed for use in consumer satellite receivers
and
decoders,
video
systems,
multimedia
and
communications applications.
Operating from a single +5V supply, the VP211 includes
an on-chip high bandwidth ADC driver ampli铿乪r, a 6-bit ADC
and digital I/O that can be interfaced to either +5V or +3V.
The VP211 also has the necessary bias voltages for the
reference resistor chain in the '铿俛sh' architecture of the ADC.
CLKIN
V
CCD
DGND
VRT
COMPA
VINA
AGND
V
CCA
VRM
COMPB
VINB
VRB
N.C.
N.C.
1
2
3
4
5
6
7
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DA5
DA4
DA3
DA2
DA1
DA0
OGND
V
CCO
DB5
DB4
DB3
DB2
DB1
DB0
FEATURES
s
90MHz Conversion Rate
s
TTL Clock/Data Interface
s
2 Volt Analog Input Range
s
Internal ADC Reference
s
Digital I/O鈥檚 compatible with +5V or +3V logic
s
Single 5 Volt Supply
s
Dual ADC System for good channel matching
APPLICATIONS
s
Satellite Decoders
s
Multimedia
s
Communications
ORDERING INFORMATION
VP211A CG MP1S (Commercial - 28 pin plastic SO)
VP211
8
9
10
11
12
13
14
MP28
Fig.1 Pin connections - top view (wide body)
-------------------------------------------------
2
8
21
COMPA
VINA
VRM
5
6
9
VRB VRM VRT
V
CCD
V
CCA
V
CCO
ADC
DRIVER
+
6-BIT
ADC
6
LATCHES
DATA
OUTPUTS
23
24
25
26
27
28
DA0
DA1
DA2
DA3
DA4
DA5
VRB
12
VREF
OP AMPS
CLOCK
DRIVER
1
CLKIN
VRT
VINB
COMPB
VRB VRM VRT
4
11
10
3
7
+
ADC
DRIVER
6-BIT
ADC
6
LATCHES
DATA
OUTPUTS
15
16
17
18
19
20
DB0
DB1
DB2
DB3
DB4
DB5
-------------------------------------------------
DGND
AGND
OGND
22
Fig.2 System block diagram
1
2
3
4
5
6
7
8
