ADS7862YB Burr-Brown Corporation, ADS7862YB Datasheet - Page 3

• Manufacturer Part Number: ADS7862YB
• Description: Dual 500kHz/ 12-Bit/ 2 2 Channel Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and
installation procedures can cause damage.
ESD damage can range from subtle performance degradation to
complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published specifi-
cations.
Analog Inputs to AGND: Any Channel Input ........ –0.3V to (+V
Digital Inputs to DGND .......................................... –0.3V to (+V
Ground Voltage Differences: AGND, DGND ................................... 0.3V
Power Dissipation .......................................................................... 325mW
Maximum Junction Temperature ................................................... +150 C
Operating Temperature Range ........................................ –40 C to +85 C
Storage Temperature Range ......................................... –65 C to +150 C
Lead Temperature (soldering, 10s) ............................................... +300 C
REF
Top View
AGND
REF
DB11
DB10
DB9
DB8
+V
OUT
IN
A
1
2
3
4
5
6
7
8
ELECTROSTATIC
DISCHARGE SENSITIVITY
32
9
31
10
REF
30
11
IN
+V
ADS7862
............................. –0.3V to (+V
29
12
D
to AGND ......................... –0.3V to +6V
28
13
27
14
26
15
25
16
24
23
22
21
20
19
18
17
+V
DGND
A0
RD
CS
CLOCK
CONVST
BUSY
D
D
D
D
+ 0.3V)
+ 0.3V)
+ 0.3V)
3
PIN DESCRIPTIONS
PIN
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
CONVST
CH B1+
CH B0+
CH A1+
CH A0+
REF
CLOCK
CH B1–
CH B0–
CH A1–
CH A0–
NAME
AGND
BUSY
DGND
REF
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
+V
+V
CS
RD
A0
OUT
A
D
IN
DESCRIPTION
Reference Input
+2.5V Reference Output. Connect directly to REF
(pin 1) when using internal reference.
Analog Ground
Analog Power Supply, +5VDC. Connect directly to
digital power supply (pin 24). Decouple to analog
ground with a 0.1 F ceramic capacitor and a 10 F
tantalum capacitor.
Data Bit 11, MSB
Data Bit 10
Data Bit 9
Data Bit 8
Data Bit 7
Data Bit 6
Data Bit 5
Data Bit 4
Data Bit 3
Data Bit 2
Data Bit 1
Data Bit 0, LSB
HIGH when a conversion is in progress.
Convert Start
An external CMOS-compatible clock can be applied to
the CLOCK input to synchronize the conversion pro-
cess to an external source. The CLOCK pin controls
the sampling rate by the equation: CLOCK 16 • f
Chip Select
Synchronization pulse for the parallel output. During a
Read operation, the first falling edge selects the A
register and the second edge selects the B register,
A0, then controls whether input 0 or input 1 is read.
On the falling edge of Convert Start, when A0 is LOW
Channel A0 and Channel B0 are converted and when
it is HIGH, Channel A1 and Channel B1 are converted.
During a Read operation, the first falling edge selects
the A register and the second edge selects the B of RD
register, A0, then controls whether input 0 or input 1 is
read.
Digital Ground. Connect directly to analog ground (pin 3).
Digital Power Supply, +5VDC
Non-Inverting Input Channel B1
Inverting Input Channel B1
Non-Inverting Input Channel B0
Inverting Input Channel B0
Inverting Input Channel A1
Non-Inverting Input Channel A1
Inverting Input Channel A0
Non-Inverting Input Channel A0
ADS7862
SAMPLE
IN
.
®