ADC601JG Burr-Brown Corporation, ADC601JG Datasheet - Page 4

• Manufacturer Part Number: ADC601JG
• Description: 12-bit 900ns Analog-to-digital Converter
• Manufacturer: Burr-Brown Corporation

PIN DEFINITIONS
PIN CONFIGURATION
PIN NUMBER
1-6 and 11-16
10
17
18
19
24
25
26
27
29
9
®
ADC601
+V
Bipolar Offset Current
Common (Digital)
Convert Command
Clock Rate Control
DD
DESIGNATION
Comparator In
Ground Sense
Bit 1 to Bit 12
(+5V) Digital
Serial Out
Clock Out
20V Input
10V Input
(MSB) Bit 1
Status
Serial Out
Status
Bit 10
Bit 11
Bit 12
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
(1) NC = No internal connection. Any voltage may be connected to pin 31, however.
(2) Pin 22 must be very cleanly decoupled to keep digital noise out of the analog circuits.
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
DESCRIPTION
12-bit parallel output data capable of sinking 3.2mA.
12-bit serial data output synchronized with the negative edge of each appropriate clock cycle.
Conversion status strobe is high during data conversion; low when parallel data is valid. Negative edge may
be used to latch parallel data, however, appropriate latch set-up time must be provided. Refer to t
ADC601 timing diagram.
Negative edge indicates when serial data is valid. After convert command goes high, fist cycle clocks bit 1
(MSB). The clock continues to run when convert command is high and resets low with convert command.
High transition starts conversion; and should remain high during conversion. Low will reset clock and SAR
logic.
May be used to increase clock speed, by increasing the positive portion of the clock. High is normal operation.
20V input range allows 10Vp-p analog input signal. Short to ground when not used.
10V input range allows 0 to –10Vp-p or 5Vp-p input range.
Only used in bipolar mode when it is connected to bipolar offset pin through short lead with low resistance.
Ground Sense pin. (See text for use).
Bipolar offset current short to comparator In through very short lead with very low resistance for bipolar
operation. Short to ground for unipolar operation.
CMOS
Clock
4
Reference
–
+
Bipolar
545
1k
2k
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Common (Analog)
NC
–V
Bipolar Offset Current
Common (Analog)
Ground Sense
Comparator Input
10V Input
20V Input
–V
+V
Common (Digital)
+V
Clock Rate Control
Convert Command
Clock Out
CC
CC
DD
CC
(1)
(–15V) Analog
(–15V) Analog
(+5V) Digital
(+15V) Analog
(2)
BBL
in the