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參數資料
| 型號： | ICL7121KMJI |
| 廠商： | HARRIS SEMICONDUCTOR |
| 元件分類： | DAC |
| 英文描述： | 16-Bit Multiplying Microprocessor-Compatible D/A Converter |
| 中文描述： | PARALLEL, WORD INPUT LOADING, 1.8 us SETTLING TIME, 16-BIT DAC, CDIP28 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 607K |
| 代理商： | ICL7121KMJI |
1
NOT RECOMMENDED FOR NEW DESIGNS
October 1997
ICL7121
16-Bit Multiplying
Features
16-Bit Resolution
Low Integral Linearity Error -0.003% FSR
Monotonic to 16 Bits Over Full Military Temperature
Range (LM Grade)
Microprocessor Compatible with Buffered Inputs
Bipolar Application Requires No External Resistors
Output Current Settling Time 3
μ
s Max (1
μ
s Typ)
Low Linerarity and Gain Temperature Coefficients
Low Power Dissipation (25mW)
Full Four-Quadrant Multiplication
Low Differential Nonlinearity Error at Bipolor Zero
Description
The ICL7121 achieves 0.003% linearity without laser
trimming by combining a four quadrant multiplying DAC
using thin film resistors with an on-chip PROM-controlled
correction circuit. Silicon-gate CMOS circuitry keeps the
power dissipation very low.
Microprocessor bus interfacing is eased using standard
memory WRITE cycle timing and control. The input buffer
register is loaded with the 16-bit input and directly controls
the output switches. The register is transparent if WR and
CS are held low.
The ICL7121 is designed and programmed for bipolar
operation. There is an offset resistor to the output which
should be connected to -V
REF
and an inverter on the MSB
line, giving the DAC a 2’s complement bipolar transfer
function. Two extra resistors are included on the chip to
facilitate the reference inversion, so that only an external op-
amp is needed.
Pinout
ICL7121
(OUTLINE DWG JI)
TOP VIEW
Ordering Information
PART NUMBER
TEMP. RANGE
(
o
C)
PACKAGE
ICL7121JCJI
0 to 70
28 Ld CERDIP
ICL7121JMJI
-55 to 125
28 Ld CERDIP
ICL7121KCJI
0 to 70
28 Ld CERDIP
ICL7121KMJI
-55 to 125
28 Ld CERDIP
ICL7121LCJI
0 to 70
28 Ld CERDIP
ICL7121LMJI
-55 to 125
28 Ld CERDIP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
(LSB) D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
10
D
11
D
12
D
13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CS
V+
I
OUT
AGND
S
AGND
F
DGND
R
FB
R
INV
V
REF
PROG
D
15
(MSB)
D
14
WR
R
OFS
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2002. All Rights Reserved
File Number
3112.1
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相關代理商/技術參數 |
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|---|---|
| ICL7121LCJI | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ICL7121LMJI | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ICL7121M | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Converter IC |
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