AD7885 AD [Analog Devices], AD7885 Datasheet
AD7885
Manufacturer Part Number
AD7885
Description
LC2MOS 16-Bit, High Speed Sampling ADCs
Manufacturer
AD [Analog Devices]
Datasheet
1.AD7885.pdf
(16 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AD7885ABP
Manufacturer:
AD
Quantity:
5 510
Company:
Part Number:
AD7885ABP
Manufacturer:
TI
Quantity:
5 510
Part Number:
AD7885BQ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
GENERAL DESCRIPTION
The AD7884/AD7885 is a 16-bit monolithic analog-to-digital
converter with internal sample-and-hold and a conversion time
of 5.3 s. The maximum throughput rate is 166 kSPS. It uses a
two pass flash architecture to achieve this speed. Two input
ranges are available: 5 V and 3 V. Conversion is initiated by
the CONVST signal. The result can be read into a microproces-
sor using the CS and RD inputs on the device. The AD7884 has
a 16-bit parallel reading structure while the AD7885 has a byte
reading structure. The conversion result is in 2s complement
code.
The AD7884/AD7885 has its own internal oscillator which con-
trols conversion. It runs from 5 V supplies and needs a V
of +3 V.
The AD7884 is available in a 40-pin plastic DIP package and in
a 44-pin PLCC package.
The AD7885 is available in a 28-pin plastic DIP package and
the AD7885A is available in a 44-pin PLCC package.
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
Monolithic Construction
Fast Conversion: 5.3 s
High Throughput: 166 kSPS
Low Power: 250 mW
APPLICATIONS
Automatic Test Equipment
Medical Instrumentation
Industrial Control
Data Acquisition Systems
Robotics
REF+
16-Bit, High Speed Sampling ADCs
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
5V
5V
5V
5V
IN
IN
IN
IN
S
F
S
F
2k
2k
R6
R6
V
5k
REF+
R1
3V
5k
V
R1
3k
3k
REF+
R2
FUNCTIONAL BLOCK DIAGRAMS
IN
R2
R4
F
R4
F
3V
F
IN
4k
4k
V
4k
4k
3V
R5
REF+
R5
V
ACCURATE
ACCURATE
A2
A2
REF+
SW1
IN
SW1
R3
R3
2k
S
S
2k
R7
R7
16-BIT
16-BIT
S
V
V
3k
REF–
DAC
3k
DAC
V
REF–
V
INV
INV
SW3
SW3
2k
A1
A1
2k
R8
SW2
R8
SW2
9
C1
C1
9
V
V
AD7884/AD7885
REF–
REF–
AGNDS
AGNDS AGNDF AV
TIMER
TIMER
9-BIT
9-BIT
ADC
GND
ADC
GND
AGNDF AV
CONVST
CONVST
© Analog Devices, Inc., 1995
CONTROL
CONTROL
9
9
9
9
DD
DD
LATCH
LATCH
ALU
ALU
BUSY
BUSY
AD7885
+
AV
AD7884
+
AV
SS
SS
16
Fax: 617/326-8703
16
V
LC
V
DD
DGND
DD
DGND
O
U
U
T
P
T
O
U
U
T
P
T
V
V
D
R
V
E
R
S
SS
I
D
R
R
V
E
S
SS
I
2
8
MOS
16
DB7
DB0
CS
RD
HBEN
DB15
DB0
CS
RD
Related parts for AD7885
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage References
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Ultralow Noise, High Accuracy
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
FAST, COMPLETE 12-BIT A/D CONVERTERS
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
5 V Precision Voltage Reference/Temperature Transducer
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Precision Micropower, Low Dropout Voltage References
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Quad Picoampere Input Current Bipolar Op Amp
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Picoampere Input Current Bipolar Op Amp
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Dual Picoampere Input Current Bipolar Op Amp
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Ultralow Drift Op Amp
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
LOGDAC CMOS Logarithmic D/A Converter
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
LC2MOS Quad 8-Bit DAC with Separate Reference Inputs
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Ultralow Noise BiFET Op Amp
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
CMOS 10&12-Bit Monolithic Multiplying D/A Converters
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
LC2MOS 10-BIT SAMPLING A/D CONVERTERS
Manufacturer:
AD [Analog Devices]
Datasheet:
Part Number:
Description:
Fast, Precision Comparator
Manufacturer:
AD [Analog Devices]
Datasheet: