AD7896BRZ Analog Devices Inc, AD7896BRZ Datasheet

IC ADC 12BIT SRL T/H HS 8-SOIC

AD7896BRZ

Manufacturer Part Number
AD7896BRZ
Description
IC ADC 12BIT SRL T/H HS 8-SOIC
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7896BRZ

Data Interface
Serial
Number Of Bits
12
Sampling Rate (per Second)
100k
Number Of Converters
1
Power Dissipation (max)
10.8mW
Voltage Supply Source
Single Supply
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Resolution (bits)
12bit
Sampling Rate
100kSPS
Input Channel Type
Single Ended
Supply Voltage Range - Analog
2.7V To 5.5V
Supply Current
5mA
Digital Ic Case Style
SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD7896CBZ - BOARD EVALUATION FOR AD7896CBZ
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD7896BRZ
Manufacturer:
ADI
Quantity:
1 000
Part Number:
AD7896BRZ
Manufacturer:
Analog Devices Inc
Quantity:
135
Part Number:
AD7896BRZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7896BRZ-REEL7
Manufacturer:
ADI
Quantity:
1 000
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 that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
GENERAL DESCRIPTION
The AD7896 is a fast, 12-bit ADC that operates from a single
2.7 V to 5.5 V supply and is housed in small 8-lead PDIP and
8-lead SOIC packages. The part contains an 8 µs successive
approximation ADC, an on-chip track-and-hold amplifier, an
on-chip clock, and a high speed serial interface.
Output data from the AD7896 is provided via a high speed,
serial interface port. This 2-wire serial interface has a serial
clock input and a serial data output with the external serial
clock accessing the serial data from the part.
In addition to the traditional dc accuracy specifications, such as
linearity, full-scale, and offset errors, the AD7896 is also speci-
fied for dynamic performance parameters, including harmonic
distortion and signal-to-noise ratio.
The part accepts an analog input range of 0 V to V
from a single 2.7 V to 5.5 V supply, consuming only 9 mW
typical. The V
so that no external reference is required.
The AD7896 features a high sampling rate mode and, for low
power applications, a proprietary automatic power-down mode
where the part automatically goes into power-down once conver-
sion is complete and “wakes up” before the next conversion cycle.
The part is available in a small, 8-lead, 0.3'' wide, plastic or
hermetic dual-in-line package (PDIP) and in an 8-lead, small
outline IC (SOIC).
FEATURES
100 kHz Throughput Rate
Fast 12-Bit Sampling ADC with 8 s Conversion Time
8-Lead PDIP and SOIC
Single 2.7 V to 5.5 V Supply Operation
High Speed, Easy-to-Use Serial Interface
On-Chip Track-and-Hold Amplifier
Analog Input Range Is 0 V to Supply
High Input Impedance
Low Power: 9 mW Typ
DD
input is also used as the reference for the part
DD
and operates
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
PRODUCT HIGHLIGHTS
1. Complete, 12-bit ADC in an 8-Lead Package.
2. Low Power, Single-Supply Operation.
3. High Speed Serial Interface.
The AD7896 contains an 8 µs ADC, a track-and-hold ampli-
fier, control logic, and a high speed serial interface, all in an
8-lead PDIP. The V
part, so no external reference is needed. This offers consider-
able space saving over alternative solutions.
The AD7896 operates from a single 2.7 V to 5.5 V supply
and consumes only 9 mW typical. The automatic power-
down mode, where the part goes into power down once
conversion is complete and “wakes up” before the next con-
version cycle, makes the AD7896 ideal for battery-powered
or portable applications.
The part provides high speed serial data and serial clock lines
allowing for an easy, 2-wire serial interface arrangement.
CONVST
2.7 V to 5.5 V, 12-Bit, 8 s
V
ADC in 8-Lead SOIC/PDIP
FUNCTIONAL BLOCK DIAGRAM
IN
AD7896
AGND
© 2003 Analog Devices, Inc. All rights reserved.
DD
TRACK-AND-HOLD
input is used as the reference for the
DGND
CLOCK
BUSY
SCLK
AD7896
REGISTER
OUTPUT
12-BIT
ADC
V
DD
www.analog.com
SDATA

Related parts for AD7896BRZ

AD7896BRZ Summary of contents

Page 1

FEATURES 100 kHz Throughput Rate Fast 12-Bit Sampling ADC with 8 s Conversion Time 8-Lead PDIP and SOIC Single 2 5.5 V Supply Operation High Speed, Easy-to-Use Serial Interface On-Chip Track-and-Hold Amplifier Analog Input Range ...

Page 2

AD7896–SPECIFICATIONS Parameter 2 DYNAMIC PERFORMANCE Signal-to-(Noise + Distortion) Ratio @ 25° MIN MAX 3 Total Harmonic Distortion (THD) 3 Peak Harmonic or Spurious Noise 3 Intermodulation Distortion (IMD) Second Order Terms Third Order Terms DC ACCURACY Resolution ...

Page 3

Parameter A Version POWER REQUIREMENTS V 2.7/5 Power Dissipation 10.8 Power-Down Mode I @ 25° MIN MAX I @ 25° 150 MIN MAX Power ...

Page 4

AD7896 ABSOLUTE MAXIMUM RATINGS 25°C, unless otherwise noted AGND . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 5

Pin No. Mnemonic Description 1 V Analog Input. The analog input range Positive supply voltage AGND Analog Ground. Ground reference for track-and-hold, comparator, and DAC. ...

Page 6

AD7896 TERMINOLOGY Relative Accuracy This is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The end- points of the transfer function are zero scale (which is V AGND + 1/2 LSB), a ...

Page 7

CONVERTER DETAILS The AD7896 is a fast, 12-bit ADC that operates from a single 2 5.5 V supply. It provides the user with a track-and- hold, ADC, and serial interface logic functions on a single chip. The ADC ...

Page 8

AD7896 OPERATING MODES Mode 1 Operation (High Sampling Performance) The timing diagram in Figure 2 is for optimum performance in Operating Mode 1 where the falling edge of CONVST starts the conversion and puts the track-and-hold amplifier into its hold ...

Page 9

Serial Interface The serial interface to the AD7896 consists of three wires: a serial clock input (SCLK), the serial data output (SDATA), and a conversion status output (BUSY). This allows for an easy-to- use interface to most microcontrollers, DSP processors, ...

Page 10

AD7896 To chip select the AD7896 in systems where more than one device is connected to the 8X51/L51 serial port, a port bit, configured as an output, from one of the 8X51/L51 parallel ports can be used to gate on ...

Page 11

An alternative scheme is to configure the ADSP-2103/ADSP-2105 such that it accepts an external noncontinuous serial clock. In this case, an external noncontinuous serial clock is provided that drives the serial clock inputs of both the ADSP-2103/ADSP-2105 and the AD7896. ...

Page 12

AD7896 Dynamic Performance (Mode 1 Only) With a combined conversion and acquisition time of 9.5 µs, the AD7896 is ideal for wide bandwidth signal processing applications. These applications require information on the ADC’s effect on the spectral content of the ...

Page 13

Plastic Dual In-Line Package [PDIP] (N-8) Dimensions shown in inches and (millimeters) 0.375 (9.53) 0.365 (9.27) 0.355 (9.02 0.295 (7.49) 0.285 (7.24) 0.275 (6.98 0.100 (2.54) BSC 0.015 0.180 (0.38) (4.57) MIN MAX 0.150 (3.81) ...

Page 14

AD7896 Revision History Location 7/03—Data Sheet changed from REV REV. C. Changes to SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 15

–15– ...

Page 16

–16– ...

Related keywords