AD7886
ORDERING GUIDE
Model
1, 2
Temperature
Range
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–55°C to +125°C
SNR
(dBs)
65
67
65
67
67
65
Integral
Nonlinearity
(LSBs)
±
2.0
±
2.0
±
2.0
±
2.0
Package
Option
3
D-28
D-28
P-28A
2
P-28A
2
D-28
D-28
AD7886JD
AD7886KD
AD7886JP
AD7886KP
AD7886BD
AD7886TD
NOTES
1Contact your sales office for availability of AD7886BD, AD7886TD and 1 MHz version.
2
Analog Devices reserves the right to ship J-Leaded Ceramic Chip Carrier (JLCCC) in lieu of PLCC packages.
3
D = Ceramic DIP; P = Plastic Leaded Chip Carrier.
PIN FUNCTION DESCRIPTION
DIP Pin
Number
Mnemonic
Description
Positive Power Supply, +5 V
±
5%. Both V
DD
pins must be tied together.
Negative Power Supply, –5 V
±
5%. Both V
SS
pins must be tied together.
Analog Ground. Both AGND pins must be tied together.
Digital Ground.
Power Supply
10 & 19
V
DD
15 & 24
V
SS
16 & 23
AGND
5
DGND
Analog and Reference Inputs
17 & 18
VIN
Analog Inputs, VIN1 and VIN2. The part can be pin strapped for any one of three analog input ranges;
Range
0 V to 5 V
0 V to 10 V
±
5 V
20
21
22
+5REF
SUM
V
REF
Pin Strap
Connect VIN2 to VIN1
Connect VIN2 to GND
Connect VIN2 to +5 V
Signal Input
VIN1 & VIN2
VIN1
VIN1
+5 V Reference input. This input is used in conjunction with SUM and V
REF
inputs to scale an external
+5 V reference to –3.5 V, the required reference for the part (see Figure 2).
Summing Point. This input is used in conjunction with +5REF and V
REF
inputs to scale an external
+5 V reference to –3.5 V, the required reference for the part (see Figure 2).
Voltage Reference Input. The AD7886 is specified with V
REF
= –3.5 V.
Three-state data outputs.
These outputs are controlled by
CS
and
RD.
DB11 is the Most Significant Bit (MSB).
BUSY
Output indicates converter status.
BUSY
is low during conversion.
Chip Select Input. The device is selected when this input is low.
Read Input. This active low signal, in conjunction with
CS,
is used to enable the output data three-state
drivers.
Conversion Start Input. This input is used to start conversion.
Interface and Control
1–4,
DB7–DB4
6–9,
DB3–DB0
25–28
DB11–DB8
11
BUSY
12
CS
13
RD
14
CONVST
–4–
REV. B
AD [ ANALOG DEVICES ]
