AD7224 Analog Devices, AD7224 Datasheet

no-image

AD7224

Manufacturer Part Number
AD7224
Description
LC2MOS 8-Bit DAC with Output Amplifiers
Manufacturer
Analog Devices
Datasheet

Specifications of AD7224

Resolution (bits)
8bit
Dac Update Rate
143kSPS
Dac Settling Time
7µs
Max Pos Supply (v)
+16.5V
Single-supply
Yes
Dac Type
Voltage Out
Dac Input Format
Par

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD72247Q
Manufacturer:
FSC
Quantity:
2
Part Number:
AD7224BQ
Manufacturer:
ADI
Quantity:
168
Part Number:
AD7224CQ
Manufacturer:
ADI
Quantity:
174
Part Number:
AD7224JNZ
Manufacturer:
AD
Quantity:
4 365
Part Number:
AD7224KN
Manufacturer:
AD
Quantity:
5 510
Part Number:
AD7224KN
Manufacturer:
ON
Quantity:
5 510
Part Number:
AD7224KN
Manufacturer:
ADI
Quantity:
303
Part Number:
AD7224KNZ
Manufacturer:
NS
Quantity:
7 037
Part Number:
AD7224KNZ
Manufacturer:
ADI
Quantity:
303
Part Number:
AD7224KNZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7224KP
Manufacturer:
Analog Devices Inc
Quantity:
10 000
Part Number:
AD7224KP
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD7224KR
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
GENERAL DESCRIPTION
The AD7224 is a precision 8-bit voltage-output, digital-to-
analog converter, with output amplifier and double buffered
interface logic on a monolithic CMOS chip. No external trims
are required to achieve full specified performance for the part.
The double buffered interface logic consists of two 8-bit regis-
ters–an input register and a DAC register. Only the data held in
the DAC registers determines the analog output of the con-
verter. The double buffering allows simultaneous update in a
system containing multiple AD7224s. Both registers may be
made transparent under control of three external lines, CS, WR
and LDAC. With both registers transparent, the RESET line
functions like a zero override; a useful function for system cali-
bration cycles. All logic inputs are TTL and CMOS (5 V) level
compatible and the control logic is speed compatible with most
8-bit microprocessors.
Specified performance is guaranteed for input reference voltages
from +2 V to +12.5 V when using dual supplies. The part is also
specified for single supply operation using a reference of +10 V.
The output amplifier is capable of developing +10 V across a
2 k load.
The AD7224 is fabricated in an all ion-implanted high speed
Linear Compatible CMOS (LC
specifically developed to allow high speed digital logic circuits
and precision analog circuits to be integrated on the same chip.
REV. B
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
8-Bit CMOS DAC with Output Amplifiers
Operates with Single or Dual Supplies
Low Total Unadjusted Error:
Extended Temperature Range Operation
Standard 18-Pin DIPs, and 20-Terminal Surface
P-Compatible with Double Buffered Inputs
Less Than 1 LSB Over Temperature
Mount Package and SOIC Package
2
MOS) process which has been
8-Bit DAC with Output Amplifiers
PRODUCT HIGHLIGHTS
1. DAC and Amplifier on CMOS Chip
2. Low Total Unadjusted Error
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
3. Single or Dual Supply Operation
4. Versatile Interface Logic
The single-chip design of the 8-bit DAC and output amplifier
is inherently more reliable than multi-chip designs. CMOS
fabrication means low power consumption (35 mW typical
with single supply).
The fabrication of the AD7224 on Analog Devices Linear
Compatible CMOS (LC
DAC switch-pair arrangement, enables an excellent total un-
adjusted error of less than 1 LSB over the full operating tem-
perature range.
The voltage-mode configuration of the AD7224 allows opera-
tion from a single power supply rail. The part can also be op-
erated with dual supplies giving enhanced performance for
some parameters.
The high speed logic allows direct interfacing to most micro-
processors. Additionally, the double buffered interface en-
ables simultaneous update of the AD7224 in multiple DAC
systems. The part also features a zero override function.
FUNCTIONAL BLOCK DIAGRAM
2
MOS) process coupled with a novel
AD7224
Fax: 617/326-8703
LC
2
MOS

Related parts for AD7224

AD7224 Summary of contents

Page 1

... V to +12.5 V when using dual supplies. The part is also specified for single supply operation using a reference of +10 V. The output amplifier is capable of developing +10 V across load. The AD7224 is fabricated in an all ion-implanted high speed 2 Linear Compatible CMOS (LC MOS) process which has been specifically developed to allow high speed digital logic circuits and precision analog circuits to be integrated on the same chip ...

Page 2

... AD7224–SPECIFICATIONS ( DUAL SUPPLY All specifications T Parameter STATIC PERFORMANCE Resolution Total Unadjusted Error Relative Accuracy Differential Nonlinearity Full-Scale Error Full-Scale Temperature Coefficient Zero Code Error Zero Code Error Temperature Coefficient REFERENCE INPUT Voltage Range Input Resistance 3 Input Capacitance ...

Page 3

... MAX NOTES 1 Maximum possible reference voltage. 2 Temperature ranges are as follows: AD7224KN, LN +70 C AD7224BQ, CQ: – +85 C AD7224TD, UD: – +125 C 3 See Terminology. 4 Sample tested Product Assurance to ensure compliance. Specifications subject to change without notice. REV AGND = DGND = ...

Page 4

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD7224 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 5

... SHOWN FOR ALL 1's ON DAC cally possible. INTERFACE LOGIC INFORMATION Table I shows the truth table for AD7224 operation. The part contains two registers, an input register and a DAC register. CS and WR control the loading of the input register while LDAC and WR control the transfer of information from the input regis- ter to the DAC register ...

Page 6

... V after the RESET line has returned “HIGH”. The RESET line can be used to ensure power- the AD7224 output and is also useful, when used as a zero override, in system calibration cycles. Figure 3 shows the input control logic for the AD7224. ...

Page 7

... Mismatch between R1 and R2 causes gain and offset errors; therefore, these resistors must match and track over tempera- ture. Once again, the AD7224 can be operated in single supply or from positive/negative supplies. Table III shows the digital code versus output voltage relationship for the circuit of Figure 6 with ...

Page 8

... AD7224 18-Pin Plastic (Suffix N) 18-Pin Ceramic (Suffix D) PLCC Package P-20A 0.180 (4.57) 0.048 (1.21) 0.165 (4.19) 0.042 (1.07) 0.056 (1.42) 0.042 (1.07) 0.048 (1.21 0.042 (1.07) PIN IDENTIFIER 0.050 TOP VIEW (1.27) BSC 0.020 (0.50) 0.356 (9.04 0.350 (8.89) 0.110 (2.79) 0.395 (10.02) SQ 0.085 (2.16) 0.385 (9.78) LCCC Package E-20A 0.200 (5.08) BSC ...

Related keywords