Dual 90MHz 6-Bit Analog to Digital Converter
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 amplifier, 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 'flash' architecture of the ADC.
FEATURES
■ 90MHz Conversion Rate
■ TTL Clock/Data Interface
■ 2 Volt Analog Input Range
■ Internal ADC Reference
■ Digital I/O’s compatible with +5V or +3V logic
■ Single 5 Volt Supply
■ Dual ADC System for good channel matching
APPLICATIONS
■ Satellite Decoders
■ Multimedia
■ Communications
ORDERING INFORMATION
VP211A CG MP1S (Commercial - 28 pin plastic SO)
VP211
Preliminary Information
DS4476 - 1.1 May 1996
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
8
9
10
11
12
13
14
VP211
Fig.1 Pin connections - top view (wide body)
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
MP28
COMPA
VINA
VRM
VRB
VRT
VINB
COMPB
V
CCD
-------------------------------------------------
5
6
9
12
VREF
4
11
10
-------------------------------------------------
+
+
DGND
2
ADC
DRIVER
ADC
DRIVER
3
6-BIT
ADC
VRB VRM VRT
OP AMPS
VRB VRM VRT
6-BIT
ADC
V
CCA
8 21
LATCHES
6
DATA
OUTPUTS
CLOCK
DRIVER
LATCHES
6
DATA
OUTPUTS
7
AGND
V
CCO
OGND
23
24
25
26
27
28
15
16
17
18
19
20
22
Fig.2 System block diagram
DA0
DA1
DA2
DA3
DA4
DA5
1
CLKIN
DB0
DB1
DB2
DB3
DB4
DB5
VP211
ABSOLUTE MAXIMUM RATINGS
DC supply voltage (V
Analog input voltage (VIN) -0.3 to VCC+0.3V
Digital inputs (CLKIN) V
Digital output current (Ioh, Iol, Isc) -20 to +20mA
CCA
, V
CCD
, V
) -0.3 to+7V
CCO
CC
THERMAL CHARACTERISTICS
THERMAL RESISTANCES
Junction to case(Θjc) 32°C/W
Junction to ambient(Θja) 84°C/W
Ambient operating temperature (Tamb) 0°C to +70°C
Storage temperature (Tstorage) -55°C to +125°C
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated) Tamb = 25°C, V
CCA/D/O
DC CHARACTERISTICS All specifications apply to either of the two ADCs
Characteristic Symbol Temp.
Test
Level Min.
Resolution - - - 6 - - Bits
Static performance
Differential non-linearity
Integral non-linearity
DNL
INL
+25°C
Full
+25°C
Full
4
4
4
4
No missing codes Full 4 Guaranteed
Power supply
Analog supply voltage
Digital supply voltage
Output supply voltage
Analog supply current
Digital supply current
Output supply current
Power dissipation
V
V
V
AI
DI
OI
CCA
CCD
CCO
CC
CC
CC
PD
Full
Full
Full
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
4
4
4
1
4
1
4
1
4
1
Analog input
Input range
Input resistance
Input capacitance
Gain variation
Gain matching
Input -3dB bandwidth
Ain input voltage
Comp output
V
in
R
in
C
in
G
V
G
m
F3dB
Aindc
Vcomp
Full
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
5
1
5
4
1
5
1
1
CLKIN
Input voltage high
Input voltage low
Input current high
Input current low
V
ih
V
il
I
ih
I
il
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
1
4
1
4
1
4
1
4
TTL digital outputs
Output voltage high
Output voltage low
Output current high
Output current low
V
oh
V
ol
I
oh
I
ol
+25°C
Full
+25°C
Full
+25°C
Full
+25°C
Full
1
4
1
4
1
4
1
4
= +5V, full temperature range = 0°C to +70°C
-
-
-
-
4.75
4.75
4.75
14
-
34
-
3
-
260
-
20k
-
-
-
-
3.6
1.8
2.0
-
-
-
-
-
–0.2
-
2.4
-
-
-
-
-
-
-
Value
Typ. Max.
-
-
-
-
5.0
5.0
5.0
19
±0.5
±0.5
±0.5
±0.5
5.25
5.25
5.25
26
-
42
51
-
11
15
-
360
460
2.0
25k
30k
4.0
-
-
0.25
0.25
200
3.9
2.0
4.1
2.2
-
-
-
0.8
-
-
-
–0.35
–0.5
-
-
3.0
-
-
0.4
-
-
-400
-
-
-
-
-
-
-
-
-
-
-
-
1
-
-
-
-
-
1
-
Units Conditions
LSB
LSB
LSB
LSB
mA
mA
mA
mA
mA
mA
mW
MHz
mA
V
V
V
V
Ω
pF
dB
dB
V
V
V
V
V
V
µAmAV
V
V
V
V
µA
-
-
Pk to Pk
Fin=300Hz to
20MHz
Fin=15.68MHz
= 5.25V
CCD
V
= 2.7V
in
V
= 5.25V
CCD
V
= 0.4V
in
V
= 4.75V
CCO
I
= 400µA
oh
V
= 4.75V
CCO
Iol = 1mA
V
= 4.75V
CCO
V
= 4.75V
CCO
2
DC CHARACTERISTICS (cont.)
Characteristic Symbol Temp.
Reference voltage
V
ladder bottom
ref
V
ladder middle
ref
V
ladder top
ref
VRB
VRM
VRT
AC CHARACTERISTICS
Characteristic Symbol Temp.
Switching performance
Clock high pulse width
Clock low pulse width
Max. conversion rate
Data output setup time
Data output hold time
Aperture delay
Aperture delay matching
Aperture jitter
Tpw1
Tpw0
F
max
T
setup
T
hold
T
T
T
Dynamic performance
Differential non-linearity
Integral non-linearity
Signal to noise ratio
Total harmonic distortion
Effective No. of bits
Crosstalk rejection
Input offset
Error rate
DNL
INL
SNR
THD
ENOB
CTR
V
BER
ad
adδ
aj
os
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
Test
Level Min.
1
1
1
2.367
2.848
3.337
Test
Level Min.
4
4
1
4
4
4
4
4
4
4
1
4
1
5
1
5
5.7
5.7
90
4
3
2
-
10
–0.95
-
31.8
40
5.0
-
-
-
Value
Typ. Max.
2.5
3.0
3.5
2.671
3.212
3.763
Value
Typ. Max.
-
-
6
6
3
0.25
25
-
-
0.5
50
+1.2
±1
-
-
5.6
50
±0.5
10e
-8
±1
VP211
Units Conditions
V
V
V
Units Conditions
-
-
8
8
4
-
-
-
-
-
ns
ns
MHz
ns
ns
ns
ns
ps rms
LSB
LSB
dB
dBc
bits
dBc
LSB
Cload=10pF
Cload=10pF
F
=
CLK
90.11MHz
FIN =
11.26MHz
NOTES
1. An input voltage of 0.0 volts ±0.5 LSB should nominally correspond to the ‘011111’ to ‘100000’B transition edge.
TEST LEVELS
Level 1 - 100% production tested.
Level 2 - 100% production tested at 25°C and sample tested
at specified temperatures.
Code
Input Voltage Digital Output
2.0 Volt Full Scale Binary
Level 3 - Sample tested only.
Level 4 - Parameter is guaranteed by design and
00 Least positive valid input 000000
characterisation testing.
Level 5 - Parameter is typical value only.
01 - 000001
● ● ●
31 - 011111
32 0 100000
33 - 100001
● ● ●
62 - 111110
63 Most positive valid input 111111
Table 1: Output coding
3