AD7233BN Analog Devices Inc, AD7233BN Datasheet

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AD7233BN

Manufacturer Part Number
AD7233BN
Description
IC DAC 12BIT SRL W/AMP 8-DIP
Manufacturer
Analog Devices Inc
Series
DACPORT®r
Datasheet

Specifications of AD7233BN

Rohs Status
RoHS non-compliant
Settling Time
10µs
Number Of Bits
12
Data Interface
Serial
Number Of Converters
1
Voltage Supply Source
Dual ±
Power Dissipation (max)
168mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)

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a
GENERAL DESCRIPTION
The AD7233 is a complete 12-bit, voltage-output, digital-to-
analog converter with output amplifier and Zener voltage reference
all in an 8-lead package. No external trims are required to
achieve full specified performance. The data format is two’s
complement, and the output range is –5 V to +5 V.
The AD7233 features a fast, versatile serial interface which
allows easy connection to both microcomputers and 16-bit digital
signal processors with serial ports. When the SYNC input is
taken low, data on the SDIN pin is clocked into the input shift
register on each falling edge of SCLK. On completion of the
16-bit data transfer, bringing LDAC low updates the DAC latch
with the lower 12 bits of data and updates the output. Alterna-
tively, LDAC can be tied permanently low, and in this case the
DAC register is automatically updated with the contents of the
shift register when all sixteen data bits have been clocked in.
The serial data may be applied at rates up to 5 MHz allowing a
DAC update rate of 300 kHz.
For applications which require greater flexibility and unipolar
output ranges with single supply operation, please refer to the
AD7243 data sheet.
The AD7233 is fabricated on Linear Compatible CMOS
(LC
aged in an 8-lead DIP package.
DACPORT is a registered trademark of Analog Devices, Inc.
2
MOS), an advanced, mixed-technology process. It is pack-
PRODUCT HIGHLIGHTS
1. Complete 12-Bit DACPORT
2. The AD7233 is a complete, voltage output, 12-bit DAC on a
3. Simple 3-wire interface to most microcontrollers and DSP
4. DAC Update Rate—300 kHz.
5. Space Saving 8-Lead Package.
12-Bit Serial Mini-DIP DACPORT
single chip. This single-chip design is inherently more reli-
able than multichip designs.
processors.
AD7233
FUNCTIONAL BLOCK DIAGRAM
SDIN
SCLK
INPUT SHIFT
REGISTER
LATCH
12-BIT
SYNC
DAC
DAC
12
12
2R
®
.
LDAC
V
DD
2R
AD7233
LC
GND
V
V
2
OUT
SS
MOS

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AD7233BN Summary of contents

Page 1

GENERAL DESCRIPTION The AD7233 is a complete 12-bit, voltage-output, digital-to- analog converter with output amplifier and Zener voltage reference all in an 8-lead package. No external trims are required to achieve full specified performance. The data format is two’s ...

Page 2

AD7233–SPECIFICATIONS P arameter A Version STATIC PERFORMANCE Resolution 12 ± Relative Accuracy ± 0.9 3 Differential Nonlinearity ± Bipolar Zero Error ± Full-Scale Error ± Full-Scale Temperature Coefficient DIGITAL INPUTS Input High ...

Page 3

... Short circuit current is typically 80 mA. Temperature Model Range AD7233AN –40°C to +85°C AD7233BN –40°C to +85° Plastic DIP. FULL-SCALE ERROR Full-scale error is a measure of the output error when the amplifier output is at full scale (full scale is either positive or negative full scale) ...

Page 4

AD7233 Pin Mnemonic Description 1 V Positive Supply ( V SCLK Serial Clock, Logic Input. Data is clocked into the input register on each falling SCLK edge. 3 SDIN Serial Data In, Logic Input. The ...

Page 5

There are two ways in which the DAC latch and hence the ana- log output may be updated. The status of the LDAC input is examined after SYNC is taken low. Depending on its status, one of two update modes ...

Page 6

AD7233–Typical Performance Characteristics 0.50 0.40 0.30 0. 0.10 0.00 10 – Volts DD SS APPLYING THE AD7233 Bipolar ( 5 V) Configuration The AD7233 provides an output ...

Page 7

MICROPROCESSOR INTERFACING Microprocessor interfacing to the AD7233 is via a serial bus that uses standard protocol compatible with DSP processors and microcontrollers. The communications channel requires a three-wire interface consisting of a clock signal, a data signal, and a synchronization ...

Page 8

AD7233 AD7233-68HC11 Interface Figure 8 shows a serial interface between the AD7233 and the 68HC11 microcontroller. SCK of the 68HC11 drives SCLK of the AD7233 while the MOSI output drives the serial data line. The SYNC signal is derived from ...

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