ICL7134BJCJI INTERSIL [Intersil Corporation], ICL7134BJCJI Datasheet

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ICL7134BJCJI

Manufacturer Part Number
ICL7134BJCJI
Description
14-Bit Multiplying Microprocessor-Compatible D/A Converter
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
December 1997
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
Features
• 14-Bit Linearity (0.003% FSR)
• No Gain Adjustment Necessary
• Microprocessor-Compatible with Double Buffered
• Bipolar Application Requires No Extra Adjustments or
• Low Linearity and Gain Temperature Coefficients
• Low Power Dissipation
• Full Four-Quadrant Multiplication
• 883B Processed Versions Available
Ordering Information
BIPOLAR VERSIONS
0.01% (12-bit)
0.006% (13-bit)
0.003% (14-bit)
UNIPLAR VERSIONS
0.01% (12-bit)
0.006% (13-bit)
0.003% (14-bit)
Inputs
External Resistors
NON-LINEARITY AT 25
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
®
o
C
ICL7134BJCJI
ICL7134BKCJI
ICL7134BLCJI
ICL7134UJCJI
ICL7134UKCJI
ICL7134ULCJI
0 to 70
TEMPERATURE RANGE (
Microprocessor-Compatible D/A Converter
ICL7134BJIJI
ICL7134BKIJI
ICL7134BLIJI
ICL7134UJIJI
ICL7134UKIJI
ICL7134ULIJI
-25 to 85
1
Description
The ICL7134 combines a four-quadrant multiplying DAC
using thin film resistor and CMOS circuitry with an on-chip
PROM-controlled correction circuit to achieve true 14-bit
linearity without laser trimming.
Microprocessor bus interfacing is eased using standard
memory WRITE cycle timing and control signal use. Two
input buffer registers are separately loaded with the 8 least
significant bits (LS register) and the 6 most significant bits
(MS register). Their contents are then transferred to the
14-bit DAC register, which controls the current switches. The
DAC register can also be loaded directly from the data
inputs, in which case the MS and LS registers are
transparent.
The ICL7134 is available in two versions. The ICL7134U is
programmed for unipolar operation while the ICL7134B is
programmed for bipolar applications. The V
most significant bit of the DAC is separated from the
reference input to the remainder of the ladder. For unipolar
use, the two reference inputs are tied together, while for
bipolar operation, the polarity of the MSB reference is
reversed, giving the DAC a true 2’s complement input
transfer function. Two resistors which facilitate the reference
inversion are included on the chip, so only an external
op-amp is needed. The PROM is coded to correct for errors
in these resistors as well as the inversion of the MSB.
o
ICL7134BJMJI
ICL7134BKMJI
ICL7134BLMJI
ICL7134UJMJI
ICL7134UKMJI
ICL7134ULMJI
C)
-55 to 125
ICL7134
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
28 Ld CERDIP
14-Bit Multiplying
File Number
PACKAGE
REF
input to the
3113.1

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ICL7134BJCJI Summary of contents

Page 1

... Two resistors which facilitate the reference inversion are included on the chip, so only an external op-amp is needed. The PROM is coded to correct for errors in these resistors as well as the inversion of the MSB. TEMPERATURE RANGE ( - ICL7134BJCJI ICL7134BJIJI ICL7134BKCJI ICL7134BKIJI ICL7134BLCJI ICL7134BLIJI ICL7134UJCJI ...

Page 2

Pinout Functional Block Diagram ICL7134 ICL7134 (OUTLINE DWG JI) TOP VIEW (LSB OUT AGND ...

Page 3

Pin Descriptions 28 LEAD PIN CERDIP NAME 1 CS Chip Select (active low). Enables register write WRITE, (active low). Writes in register. Equivalent to CS Bit 0 Least Significant Bit1 ...

Page 4

Absolute Maximum Ratings (Note 1) Supply Voltage (V+ to DGND -0.3V to 7.5V to DGND . . . . . . ...

Page 5

Electrical Specification V+ = +5V, V Unless Otherwise Specified. (Continued) PARAMETER REFERENCE INPUT Input Resistance RFL ANALOG OUTPUT Output Capacitance DAC Register Outputs All LOW (I Terminal) OUT DAC Register Outputs All HIGH DIGITAL INPUTS Low State ...

Page 6

Test Circuits FIGURE 2. POWER SUPPLY REJECTION TEST CIRCUIT ICL7134 FIGURE 1. NON-LINEARITY TEST CIRCUIT 6 ...

Page 7

Test Circuits (Continued) FIGURE 3. FEEDTHROUGH ERROR TEST CIRCUIT FIGURE 4. OUTPUT CURRENT SETTLING TIME TEST CIRCUIT Timing Diagrams FIGURE 5A. USING 14-BIT TRANSPARENT ADDRESSING ICL7134 7 ...

Page 8

Timing Diagrams FIGURE 5B. USING FULL BUFFER 8-BIT ADDRESSING CAPABILITY ICL7134 8 ...

Page 9

Definition of Terms Nonlinearity - Error contributed by deviation of the DAC transfer function from a straight line through the end points of the actual plot of transfer function. Normally expressed as a percentage of full scale range or in ...

Page 10

Digital Section Two levels of input buffer registers allow loading of data from an 8-bit or 16-bit data bus. The A and A 0 four operations: 1) load the LS-buffer register with the data at inputs ...

Page 11

For applications where the output reference ground point is established somewhere other than at the DAC, the circuit of Figure 9 can be used. ...

Page 12

FIGURE 10. BIPOLAR (2’S COMPLEMENT), FOUR-QUADRANT MULTIPLYING CIRCUIT Offset Adjustment 1. Connect all data inputs and WR, CS, A DGND. 2. Adjust the offset zero-adjust trim-pot of the operational , if used, for a maximum of 0V ±50µV at amplifier ...

Page 13

FIGURE 11. ICL7134 INTERFACE TO 8048 SYSTEM FIGURE 13. 8085 SYSTEM INTERFACE ICL7134 FIGURE 12. INTERFACE TO 8080 SYSTEM 13 ...

Page 14

FIGURE 14. R650X AND MC680X FAMILIES’ INTERFACE TO ICL7134 FIGURE 16. ICL7134 TO 8048/80/85 INTERFACE WITH LOW FEEDTHROUGH Digital Feedthrough All of the direct interfaces shown above can suffer from a capacitive coupling problem. The 14 data pins, and 4 ...

Page 15

ICL7134 FIGURE 17. SUCCESSIVE APPROXIMATION A/D CONVERTER 15 ...

Page 16

FIGURE 18A. PRONTED CIRCUIT SIDE OF CARD (SINGLE SIDED BOARD) FIGURE 18. PRINTED CIRCUIT BOARD LAYOUT (BIPOLAR CIRCUIT, SEE FIGURE 10) PC Board Layout Great care should be taken in the board layout to minimize ground loop and similar “hidden ...

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