DAC7802K Burr-Brown Corporation, DAC7802K Datasheet

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DAC7802K

Manufacturer Part Number
DAC7802K
Description
Dual Monolithic CMOS 12-Bit Multiplying DIGITAL-TO-ANALOG CONVERTERS
Manufacturer
Burr-Brown Corporation
Datasheet

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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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
FEATURES
DESCRIPTION
The DAC7800, DAC7801 and DAC7802 are mem-
bers of a new family of monolithic dual 12-bit CMOS
multiplying digital-to-analog converters. The digital
interface speed and the AC multiplying performance
are achieved by using an advanced CMOS process
optimized for data conversion circuits. High stability
on-chip resistors provide true 12-bit integral and dif-
ferential linearity over the wide industrial temperature
range of –40
DAC7800 features a serial interface capable of clock-
ing-in data at a rate of at least 10MHz. Serial data is
clocked (edge triggered) MSB first into a 24-bit shift
register and then latched into each D/A separately or
simultaneously as required by the application. An
asynchronous CLEAR control is provided for power-
on reset or system calibration functions. It is packaged
in a 16-pin 0.3" wide plastic DIP.
DAC7801 has a 2-byte (8 + 4) double-buffered
interface. Data is first loaded (level transferred) into
the input registers in two steps for each D/A. Then
both D/As are updated simultaneously. DAC7801 fea-
tures an asynchronous CLEAR control. DAC7801 is
packaged in a 24-pin 0.3" wide plastic DIP.
© 1990 Burr-Brown Corporation
Serial—DAC7800
8 + 4-Bit Parallel—DAC7801
12-Bit Parallel—DAC7802
TWO D/As IN A 0.3" WIDE PACKAGE
SINGLE +5V SUPPLY
HIGH SPEED DIGITAL INTERFACE:
MONOTONIC OVER TEMPERATURE
LOW CROSSTALK: –94dB min
FULLY SPECIFIED OVER –40
Dual Monolithic CMOS 12-Bit Multiplying
o
DIGITAL-TO-ANALOG CONVERTERS
C to +85
o
C.
®
O
C TO +85
O
C
PDS-1079G
1
APPLICATIONS
DAC7802 has a single-buffered 12-bit data word in-
terface. Parallel data is loaded (edge triggered) into the
single D/A register for each D/A. DAC7802 is pack-
aged in a 24-pin 0.3" wide plastic DIP.
Serial
12
8
PROCESS CONTROL OUTPUTS
ATE PIN ELECTRONICS LEVEL SETTING
PROGRAMMABLE FILTERS
PROGRAMMABLE GAIN CIRCUITS
AUTO-CALIBRATION CIRCUITS
12-Bit Interface
Serial Interface
8-Bit Interface
8 Bits + 4 Bits
DAC7801
DAC7800
DAC7802
DAC7800, 01, 02
12
12
Printed in U.S.A. January, 1998
DAC7800
DAC7801
DAC7802
V
12-Bit MDAC
V
12-Bit MDAC
REF A
REF B
DAC A
DAC B
AGND A
AGND B
R
R
I
I
OUT A
OUT B
FB A
FB B
®

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DAC7802K Summary of contents

Page 1

... 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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 © 1990 Burr-Brown Corporation APPLICATIONS ...

Page 2

SPECIFICATIONS ELECTRICAL +5VDC +10V – +85 C, unless otherwise noted. DD REF A REF B A PARAMETER ACCURACY Resolution Relative Accuracy Differential Nonlinearity Gain Error Measured Using R All ...

Page 3

... SOIC DAC7801LU 24-Lead SOIC DAC7802KP 24-Pin DIP DAC7802LP 24-Pin DIP DAC7802KU 24-Lead SOIC DAC7802LU 24- Lead SOIC NOTE: (1) For detailed drawing and dimension table, please see end of data sheet, or Appendix C of Burr-Brown IC Data Book. ABSOLUTE MAXIMUM RATINGS +25 C, unless otherwise noted. ...

Page 4

DAC7800 BLOCK DIAGRAM DAC7800 DAC B Register 12 DAC B Bit 0 Bit 11 Bit 12 Bit 23 DAC A 12 DAC A Register CLK CS Data CLR DGND In ...

Page 5

DAC7800 (CONT) TIMING CHARACTERISTICS V = +5V +10V – + REF A REF B A PARAMETER MINIMUM t — Data Setup Time 15ns 1 t — Data Hold Time 15ns ...

Page 6

DAC7801 (CONT) TIMING CHARACTERISTICS V = +5V +10V – + REF A REF B A PARAMETER t — Address Valid to Write Setup Time 1 t — Address Valid to ...

Page 7

TYPICAL PERFORMANCE CURVES OUTPUT OP AMP IS OPA602 + +5V OUTPUT LEAKAGE CURRENT vs TEMPERATURE 1µ 100n 10n 1n 100p 10p 1p –75 –50 –25 0 +25 +50 Temperature (°C) CHANNEL-TO-CHANNEL ISOLATION vs ...

Page 8

DISCUSSION OF SPECIFICATIONS RELATIVE ACCURACY This term, also known as end point linearity or integral linearity, describes the transfer function of analog output to digital input code. Relative accuracy describes the deviation from a straight line, after zero and full ...

Page 9

DGND should be connected together at one point only, preferably at the power supply ground point. Separate returns minimize current flow in low-level signal paths if properly connected. Output op amp analog common (+ input) should be connected as near ...

Page 10

If an application requires the D/A to have zero gain error, the circuit shown in Figure 6 may be used. Resistors R2 and R4 induce a positive gain error greater than worst-case initial negative gain error. Trim resistors R1 and ...

Page 11

1µF 100 V REF A DAC A DAC7802 DAC B V REF B DGND R 3 100 FIGURE 6. Bipolar Configuration with Gain Trim. +10V 6 ...

Page 12

REF A 1µF DAC A DAC780X DAC B V DGND REF B FIGURE 8. 13-Bit Bipolar DAC. V REF 2 DAC 2 f Adjust C V REF 1 DAC 1 DAC780X Filter Input ...

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