AD9020 Analog Devices, Inc., AD9020 Datasheet - Page 5

• Manufacturer Part Number: AD9020
• Description: 10-bit 60 Msps A/d Converter
• Manufacturer: Analog Devices, Inc.

Pin No.
1
2, 16, 28, 29, 35, 41, 42,
54, 64
3, 6, 15, 18, 25, 30, 33, 34,
37, 40, 45, 52, 55, 65, 68
4, 5, 13, 17, 27, 31, 32,
36, 38, 39, 43, 53, 66, 67
7
8, 9
11
12
14
19–23, 46–50
51
56
57
59
61
63
REV. A
Name
1/2
–V
+V
GROUND
3/4
ANALOG IN
+V
+V
ENCODE
D
OVERFLOW
–V
–V
LSBs INVERT
MSB INVERT
1/4
0
S
–D
REF
SENSE
ENCODE
(LSB) D
REF
S
REF
SENSE
REF
REF
+V
+V
SENSE
9
GND
GND
+V
+V
+V
–V
REF
NC
NC
NC
D
D
D
D
S
S
S
0
1
2
3
4
S
AD9020 PIN FUNCTION DESCRIPTIONS
10
26
27
9
Function
Midpoint of internal reference ladder.
Negative supply voltage; nominally –5.0 V
Positive supply voltage; nominally +5 V
plane.
Three-quarter point of internal reference ladder.
Analog input; nominally between 1.75 V.
Voltage sense line to most positive point on internal resistor ladder.
Normally +1.75 V.
Voltage force connection for top of internal reference ladder. Normally driven
to provide +1.75 V at +V
TTL-compatible convert command used to begin digitizing process.
TTL-compatible digital output data.
TTL-compatible output indicating ANALOG IN > +V
Voltage force connection for bottom of internal reference ladder. Normally
driven to provide –1.75 V at –V
Voltage sense line to most negative point on internal resistor ladder.
Normally –1.75 V.
Normally grounded. When connected to +V
inverted.
Normally grounded. When connected to +V
is inverted.
One-quarter point of internal reference ladder.
All ground pins should be connected together and to low impedance ground
(Not to Scale)
AD9020
TOP VIEW
–5–
43
61
SENSE
44
60
.
SENSE
NC = NO CONNECT
NC
LSBs INVERT
NC
–V
–V
+V
–V
GND
+V
OVERFLOW
D
D
D
D
D
+V
NC
9
8
7
6
5
S
S
S
SENSE
REF
S
(MSB)
.
5%.
S
S
5%.
, lower order bits (D
, most significant bit (MSB; D
SENSE
.
AD9020
0
–D
8
) are
9
)