DAC7621 DIGITAL-TO-ANALOG CONVERTER Datasheet

DAC7621 Datasheet, PDF, Equivalent


Part Number

DAC7621

Description

12-Bit/ Parallel Input DIGITAL-TO-ANALOG CONVERTER

Manufacture

Burr-Brown Corporation

Total Page 11 Pages
Datasheet
Download DAC7621 Datasheet


DAC7621
®
DAC7621 ®
DAC7621
For most current data sheet and other product
information, visit www.burr-brown.com
12-Bit, Parallel Input
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q LOW POWER: 2.5mW
q FAST SETTLING: 7µs to 1 LSB
q 1mV LSB WITH 4.095V FULL-SCALE
RANGE
q COMPLETE WITH REFERENCE
q 12-BIT LINEARITY AND MONOTONICITY
OVER INDUSTRIAL TEMP RANGE
q ASYNCHRONOUS RESET TO 0V
APPLICATIONS
q PROCESS CONTROL
q DATA ACQUISITION SYSTEMS
q CLOSED-LOOP SERVO-CONTROL
q PC PERIPHERALS
q PORTABLE INSTRUMENTATION
DESCRIPTION
The DAC7621 is a 12-bit digital-to-analog converter
(DAC) with guaranteed 12-bit monotonicity perfor-
mance over the industrial temperature range. It re-
quires a single +5V supply and contains an input
register, latch, 2.435V reference, DAC, and high speed
rail-to-rail output amplifier. For a full-scale step, the
output will settle to 1 LSB within 7µs. The device
consumes 2.5mW (0.5mA at 5V).
The parallel interface is compatible with a wide variety
of microcontrollers. The DAC7621 accepts a 12-bit
parallel word, has a double-buffered input logic struc-
ture and provides data readback. In addition, two
control pins provide a chip select (CS) function and
asynchronous clear (CLR) input. The CLR input can
be used to ensure that the DAC7621 output is 0V on
power-up or as required by the application.
The DAC7621 is available in a 20-lead SSOP package
and is fully specified over the industrial temperature
range of –40°C to +85°C.
VDD
CLR
LOADDAC
Ref
CS
R/W
12-Bit DAC
12
DAC Register
12
Input Register
12
I/O Buffer
VOUT
DAC7621
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11
DGND
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1998 Burr-Brown Corporation
PDS-1502B
Printed in U.S.A. March, 1999

DAC7621
SPECIFICATIONS
ELECTRICAL
At TA = –40°C to +85°C, and VDD = +5V, unless otherwise noted.
DAC7621E
PARAMETER
CONDITIONS
MIN
TYP
MAX
RESOLUTION
ACCURACY
Relative Accuracy(1)
Differential Nonlinearity
Zero-Scale Error
Full Scale Voltage
ANALOG OUTPUT
Output Current
Load Regulation
Capacitive Load
Short-Circuit Current
Short-Circuit Duration
DIGITAL INPUT
Data Format
Data Coding
Logic Family
Logic Levels
VIH
VIL
IIH
IIL
DYNAMIC PERFORMANCE
Settling Time(2) (tS)
DAC Glitch
Digital Feedthrough
Guaranteed Monotonic
Code 000H
Code FFFH
Code 800H
RLOAD 402, Code 800H
No Oscillation
GND or VDD
To ±1 LSB of Final Value
12
–2
–1
–1
4.079
±1/2
±1/2
+1
4.095
+2
+1
+3
4.111
±5 ±7
1
500
±20
Indefinite
3
Parallel
Straight Binary
CMOS
0.7 • VDD
0.3 • VDD
±10
±10
7
5
2
POWER SUPPLY
VDD
IDD
Power Dissipation
Power Supply Sensitivity
TEMPERATURE RANGE
Specified Performance
VIH = 5V, VIL = 0V, No Load, at Code 000H
VIH = 5V, VIL = 0V, No Load
VDD = ±5%
+4.75
–40
+5.0
0.5
2.5
0.001
+5.25
1
5
0.004
+85
DAC7621EB
MIN
TYP
MAX
T
–1
–1
T
4.087
T
±1/4
±1/4
T
4.095
T
T
T
T
T
+1
+1
T
4.103
T
T
T
T
T
T
T
T
T
T
T
TTT
TT
TT
TT
TT
UNITS
Bits
LSB
LSB
LSB
V
mA
LSB
pF
mA
V
V
µA
µA
µs
nV-s
nV-s
V
mA
mW
%/%
°C
T Same specification as for DAC7621E.
NOTES: (1) This term is sometimes referred to as Linearity Error or Integral Nonlinearity (INL). (2) Specification does not apply to negative-going transitions where
the final output voltage will be within 3 LSBs of ground. In this region, settling time may be double the value indicated.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
DAC7621
2


Features ® DAC 762 ® 1 DAC7621 For most c urrent data sheet and other product inf ormation, visit www.burr-brown.com 12- Bit, Parallel Input DIGITAL-TO-ANALOG C ONVERTER FEATURES q LOW POWER: 2.5mW q FAST SETTLING: 7µs to 1 LSB q 1mV LSB WITH 4.095V FULL-SCALE RANGE q COMPLETE WITH REFERENCE q 12-BIT LINEARITY AND MONOTONICITY OVER INDUSTRIAL TEMP RANGE q ASYNCHRONOUS RESET TO 0V DESCRIPTIO N The DAC7621 is a 12-bit digital-to-an alog converter (DAC) with guaranteed 12 -bit monotonicity performance over the industrial temperature range. It requir es a single +5V supply and contains an input register, latch, 2.435V reference , DAC, and high speed rail-to-rail outp ut amplifier. For a full-scale step, th e output will settle to 1 LSB within 7 s. The device consumes 2.5mW (0.5mA at 5V). The parallel interface is compati ble with a wide variety of microcontrol lers. The DAC7621 accepts a 12-bit para llel word, has a double-buffered input logic structure and provides data readback. In addition, two contro.
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