AD8303JRU-REEL Analog Devices Inc, AD8303JRU-REEL Datasheet

IC DAC 12-BIT SERIAL 14-SOIC T/R

AD8303JRU-REEL

Manufacturer Part Number
AD8303JRU-REEL
Description
IC DAC 12-BIT SERIAL 14-SOIC T/R
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8303JRU-REEL

Rohs Status
RoHS non-compliant
Settling Time
14µs
Number Of Bits
12
Data Interface
Serial, SPI™
Number Of Converters
2
Voltage Supply Source
Single Supply
Power Dissipation (max)
9.6mW
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
a
GENERAL DESCRIPTION
The AD8303 is a complete (includes internal reference) dual,
12-bit, voltage output digital-to-analog converter designed to
operate from a single +3 volt supply. Built using a CBCMOS
process, this monolithic DAC offers the user low cost and ease-
of-use in single-supply +3 volt systems. Operation is guaranteed
over the supply voltage range of +2.7 V to +5.5 V making this
device ideal for battery operated applications.
The 2.0475 V full-scale voltage output is laser-trimmed to
maintain accuracy over the operating temperature range of the
device. The binary input data format provides an easy-to-use
one-half millivolt-per-bit software programmability. The voltage
outputs are capable of sourcing 3 mA.
REV. 0
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
Complete Dual 12-Bit DAC
Pretrimmed Internal Voltage Reference
Single +3 V Operation
0.5 mV/Bit with 2.0475 V Full Scale
Low Power: 9.6 mW
3-Wire Serial SPI Compatible Interface
Power Shutdown I
Compact SO-14, 1.75 mm Height Package
APPLICATIONS
Portable Communications
Digitally Controlled Calibration
Servo Controls
PC Peripherals
Figure 1. Differential Nonlinearity Error vs. Code
–0.2
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0
0
DIGITAL INPUT CODE – Decimal
DD
1024
< 1 A
V
T
DD
A
= –40 C, +25 C, +85 C
= +5V
2048
3072
4096
A double buffered serial data interface offers high speed, three-
wire, DSP and SPI microcontroller compatible inputs using
data in (SDI), clock (CLK) and load strobe (LDA + LDB)
pins. A chip-select (CS) pin simplifies connection of multiple
DAC packages by enabling the clock input when active low.
Additionally, an RS input sets the output to zero scale or to 1/2
scale based on the level applied to the MSB pin. A power
shutdown feature reduces power dissipation to less than 3 W.
The AD8303 is specified over the extended industrial (–40 C to
+85 C) temperature range. AD8303s are available in plastic
DIP and low profile 1.75 mm height SO-14 surface mount
packages. For single-channel DAC applications, see the
AD8300 which is offered in the 8-lead DIP and SO-8 packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Figure 2. Linearity Error vs. Digital Code and Temperature
(DATA)
CLK
LDA
LDB
CS
SDI
En
FUNCTIONAL BLOCK DIAGRAM
–0.5
–1.5
1.5
0.5
S
H
F
T
I
–1
–2
2
1
0
+3 V, Dual, Serial Input
DGND
R
E
G
S
E
R
T
I
0
Complete 12-Bit DAC
DIGITAL INPUT CODE – Decimal
1024
MSB
D
D
P
P
D
A
C
A
D
A
C
B
+85 C
R
R
R
E
G
S
E
R
R
E
G
S
E
R
T
T
I
I
–40 C
RS
V
2048
DD
B
A
N
D
G
A
P
DAC A
DAC B
R
E
F
E
R
E
N
C
E
© Analog Devices, Inc., 1996
+25 C
AD8303
V
3072
AGND
DD
REF
BUF
REF
BUF
= +5V
AD8303
AMP
AMP
OP
OP
B
A
Fax: 617/326-8703
4096
SHDN
V
V
V
OUTA
REF
OUTB

Related parts for AD8303JRU-REEL

AD8303JRU-REEL Summary of contents

Page 1

FEATURES Complete Dual 12-Bit DAC Pretrimmed Internal Voltage Reference Single +3 V Operation 0.5 mV/Bit with 2.0475 V Full Scale Low Power: 9.6 mW 3-Wire Serial SPI Compatible Interface Power Shutdown I < Compact SO-14, 1.75 ...

Page 2

AD8303–SPECIFICATIONS +3 V OPERATION (@ +3.6 V, – Parameter STATIC PERFORMANCE 2 Resolution 2 Relative Accuracy 2 Differential Nonlinearity 2 Differential Nonlinearity Zero-Scale Error 3 Full-Scale Voltage 3, 4 Full-Scale Tempco ANALOG OUTPUTS ...

Page 3

SPECIFICATIONS +5 V OPERATION (@ Parameter STATIC PERFORMANCE 2 Resolution 2 Relative Accuracy 2 Differential Nonlinearity 2 Differential Nonlinearity Zero-Scale Error 3 Full-Scale Voltage 3, 4 Full-Scale Tempco ANALOG OUTPUTS Output Current Output Resistance to ...

Page 4

AD8303 ABSOLUTE MAXIMUM RATINGS GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0 ...

Page 5

CS CLK RS MSB SHDN LDA/B Serial Shift Register Function ...

Page 6

AD8303–Typical Performance Characteristics 120 POSITIVE V = +5V CURRENT DD 80 LIMIT 40 DATA = 800 TIED TO L +1.024V –40 NEGATIVE –80 CURRENT LIMIT –120 OUTPUT VOLTAGE – Volts Figure 4. I vs. ...

Page 7

NO LOAD SS = 200 UNITS 1.5 NORMALIZED TO + +2.7V DD 1.0 0 +4.5V DD 0.0 –0.5 –1.0 –55 –35 – 105 125 TEMPERATURE – C Figure 13. ...

Page 8

AD8303 THEORY OF OPERATION The AD8303 is a complete, ready-to-use, dual, 12-bit digital-to- analog converter. Only one +2 +5.5 V power supply is necessary for operation. It contains two voltage-switched, 12-bit, laser-trimmed digital-to-analog converters, a curvature- corrected bandgap ...

Page 9

POWER SUPPLY The very low power consumption of the AD8303 is a direct result of a circuit design optimizing the use of a CBCMOS process. By using the low power characteristics of CMOS for the logic, and the low noise, ...

Page 10

AD8303 SDI CLK en CS Figure 27. AD8303 Digital Section Functional Block Diagram DIGITAL INTERFACE The AD8303 has a double-buffered serial data input. The serial-input register is separate from the two DAC registers, which allows preloading of a new data ...

Page 11

SHUTDOWN (SHDN) The shutdown feature is activated when SHDN is pulled low. While the AD8303 is in shutdown mode, the voltage reference, DACs, and output amplifiers are all turned off. Supply current is less than 1 A. The DAC output ...

Page 12

AD8303 BIPOLAR OUTPUT OPERATION Although the AD8303 has been designed for single-supply operation, the output can also be configured for bipolar operation. A typical circuit is shown in Figure 31. This circuit uses the AD8303’s internal voltage reference to generate ...

Page 13

AD8303-MC68HC11 INTERFACE The circuit illustrated in Figure 33 shows a serial interface between the AD8303 and the MC68HC11 8-bit micro- processor. The MOSI output drives the AD8303’s serial data input, SDI, while SCK drives the clock (CLK). The DAC’s CS, ...

Page 14

AD8303 ;AD8303.ASM ; ; This subroutine loads an AD8303 shift register with a 12-bit ; DAC value, and transfers the value to DAC A or DAC B. ; The DAC value is stored at location DAC-VAL1 (MSB) and DAC_VAL0 (LSB) ...

Page 15

REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 14-Lead Epoxy DIP (N-14) 0.795 (20.19) 0.725 (18.42 0.280 (7.11) 0.240 (6.10) 0.325 (8.25 0.300 (7.62) 0.060 (1.52) PIN 1 ...

Page 16

AD8303 –16– REV. 0 ...

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