Image ICL7135
型号: ICL7135
厂商: Texas Instruments Texas Instruments
标准:
分类: 半导体
描述: 4.5-bits, 0.003 ksps adc, muxed bcd output, true differential input, 1 Ch. 28-pdip 0 to 70
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ICL7135的详细信息

Resolution(Bits) : 4.5
Estimated Footprint(mm<:
sup>:
2<:
/sup>:
) : [pf]28PDIP[/pf]
Package Group : PDIP
Rating : Catalog
Power Consumption(Typ)(mW) : 5
Operating Temperature Range(C) : 0 to 70
Analog Voltage AV/DD(Min)(V) : 4.75
Approx. Price (US$) : 5.05 | 1ku
# Input Channels : 4
Architecture : Dual-Slope
Sample Rate (max)(SPS) : 3SPS
Reference Mode : Ext
Interface : Parallel CMOS
INL (+/-)(Max)(%) : 0.005
Analog Voltage AV/DD(Max)(V) : 5.25
ꢀ ꢁ ꢂꢃ ꢄ ꢅ ꢆ ꢁ ꢇ ꢈ ꢂ ꢁꢃ ꢄ ꢅ ꢆ ꢁ  
ꢉ ꢄ ꢊ ꢋ ꢌ ꢍ ꢀ ꢎ ꢀ ꢈ ꢏ ꢐꢑ ꢁ ꢀꢒ ꢀ ꢓ ꢔ  
ꢕ ꢔ ꢕ ꢂꢓ ꢎ ꢌ ꢈꢓ ꢌ ꢍ ꢀ ꢎꢀ ꢈꢕ ꢂ ꢁ ꢓ ꢔ ꢖ ꢑꢐ ꢈ ꢑ ꢐ ꢒ  
SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003  
DW OR N PACKAGE  
(TOP VIEW)  
D
D
D
D
D
Zero Reading for 0-V Input  
Precision Null Detection With True Polarity  
at Zero  
V
UNDER RANGE  
OVER RANGE  
STROBE  
1
28  
27  
26  
25  
24  
CC−  
1-pA Typical Input Current  
True Differential Input  
REF  
ANLG COMMON  
INT OUT  
2
3
RUN/HOLD  
DGTL GND  
4
Multiplexed Binary-Coded-Decimal (BCD)  
Output  
AUTO ZERO  
BUFF OUT  
5
6
23 POLARITY  
D
Low Rollover Error: ±1 Count Max  
Control Signals Allow Interfacing With  
UARTs or Microprocessors  
7
22  
21  
20  
19  
18  
17  
16  
15  
C
C
CLK  
BUSY  
D1  
ref−  
D
8
ref+  
IN−  
9
D
Autoranging Capability With Over-and  
Under-Range Signals  
10  
11  
12  
13  
14  
IN+  
D2  
V
D3  
CC+  
D5  
D
TTL-Compatible Outputs  
D4  
B1  
B2  
B8  
D
Second Source to Teledyne TSC7135,  
Intersil ICL7135, Maxim ICL7135, and  
Siliconix Si7135  
B4  
D
CMOS Technology  
DESCRIPTION  
The ICL7135C and TLC7135C converters are manufactured with Texas Instruments highly efficient CMOS  
technology. These 4 1/2-digit, dual-slope-integrating, analog-to-digital converters (ADCs) are designed to  
provide interfaces to both a microprocessor and a visual display. The digit-drive outputs D1 through D4 and  
multiplexed binary-coded-decimal outputs B1, B2, B4, and B8 provide an interface for LED or LCD  
decoder/drivers as well as microprocessors.  
The ICL7135C and TLC7135C offer 50-ppm (one part in 20,000) resolution with a maximum linearity error of  
one count. The zero error is less than 10 µV and zero drift is less than 0.5 µV/°C. Source-impedance errors are  
minimized by low input current (less than 10 pA). Rollover error is limited to ±1 count.  
The BUSY, STROBE, RUN/HOLD, OVER RANGE, and UNDER RANGE control signals support  
microprocessor-based measurement systems. The control signals also can support remote data acquisition  
systems with data transfer through universal asynchronous receiver transmitters (UARTs).  
The ICL7135C and TLC7135C are characterized for operation from 0°C to 70°C.  
AVAILABLE OPTIONS  
PACKAGE  
T
A
PLASTIC DIP  
(N)  
SMALL OUTLINE  
(DW)  
ICL7135CN  
TLC7135CN  
0°C to 70°C  
TLC7135CDW  
Caution. These devices have limited built-in protection. The leads should be shorted together or the device placed in conductive foam  
during storage or handlilng to prevent electrostatic damage to the MOS gates.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
ꢈꢣ  
Copyright 1999−2003, Texas Instruments Incorporated  
ꢟ ꢣ ꢠ ꢟꢘ ꢙ ꢭ ꢛ ꢚ ꢞ ꢦ ꢦ ꢤ ꢞ ꢜ ꢞ ꢝ ꢣ ꢟ ꢣ ꢜ ꢠ ꢨ  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  

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