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TC835C/BU

Description
1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP64, 14 X 14 MM, 2.70 MM PITCH, PLASTIC, MQFP-64
CategoryAnalog mixed-signal IC    converter   
File Size421KB,26 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
Download Datasheet Parametric Compare View All

TC835C/BU Overview

1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP64, 14 X 14 MM, 2.70 MM PITCH, PLASTIC, MQFP-64

TC835C/BU Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Parts packaging codeQFP
package instructionQFP, QFP64,.66SQ,32
Contacts64
Reach Compliance Codecompliant
ECCN codeEAR99
Maximum analog input voltage2 V
Minimum analog input voltage-2 V
Converter typeADC, DUAL-SLOPE
JESD-30 codeS-PQFP-G64
JESD-609 codee3
length14 mm
Maximum linear error (EL)0.005%
Nominal negative supply voltage-5 V
Number of analog input channels1
Number of digits4
Number of functions1
Number of terminals64
Maximum operating temperature70 °C
Minimum operating temperature
Output bit codeBINARY CODED DECIMAL
Output formatPARALLEL, 4 BITS
Package body materialPLASTIC/EPOXY
encapsulated codeQFP
Encapsulate equivalent codeQFP64,.66SQ,32
Package shapeSQUARE
Package formFLATPACK
Peak Reflow Temperature (Celsius)260
power supply+-5 V
Certification statusNot Qualified
Maximum seat height3.15 mm
Nominal supply voltage5 V
surface mountYES
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch0.8 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width14 mm
Base Number Matches1
TC835
Personal Computer Data Acquisition A/D Converter
Features
Upgrade of Pin-Compatible TC7135, ICL7135
200 kHz Operation
Single 5V Operation With TC7660
Multiplexed BCD Data Output
UART and Microprocessor Interface
Control Outputs for Auto-Ranging
Input Sensitivity: 100 µV
No Sample and Hold Required
General Description
The TC835 is a low power, 4-1/2 digit (0.005%
resolution), BCD analog-to-digital converter (ADC) that
has been characterized for 200 kHz clock rate
operation. The five conversions per second rate is
nearly twice as fast as the ICL7135 or TC7135. The
TC835, like the TC7135, does not use the external
diode resistor rollover error compensation circuits
required by the ICL7135.
The multiplexed BCD data output is perfect for interfac-
ing to personal computers. The low cost, greater than
14-bit high-resolution and 100 µV sensitivity makes the
TC835 exceptionally cost-effective.
Microprocessor-based data acquisition systems are
supported by the BUSY and STROBE outputs, along
with the RUN/HOLD input of the TC835. The
OVERRANGE, UNDERRANGE, BUSY and RUN/
HOLD control functions, plus multiplexed BCD data
outputs, make the TC835 the ideal converter for micro-
processor-based scales, measurement systems and
intelligent panel meters.
The TC835 interfaces with full function LCD and LED
display decoder/drivers. The UNDERRANGE and
OVERRANGE outputs may be used to implement an
auto-ranging scheme or special display functions.
Applications
• Personal Computer Data Acquisition
• Scales, Panel Meters, Process Controls
• HP-IL Bus Instrumentation
Typical Application
Address Bus
Control
Data Bus
+5V
PA0
PA1
PA2
R 6522 P
PA3
PA4
PA5
PA6
PA7
CA1
CA2
HCTS157
1Y
1B
2B
2Y
3B
3Y
S
1A
2A
3A
V+ REF CAP
BUF
AZ
POL
OR
INT
UR
D5
B8 INPUT+
B4
B2
TC835
B1
V
R
D1
D2
Input
D3 Analog
Common
D4
STB
R/H
F
IN
DGND
REF Voltage
+15V -15V
DG529
D
A
D
B
Channel 1
Channel 2
Channel 3
WR
Channel 4
A
1
A
0
EN
Differential
Multiplexer
PB0 PB1 PB2 PB3
F
IN
-5V
Channel Selection
©
2007 Microchip Technology Inc.
DS21478C-page 1

TC835C/BU Related Products

TC835C/BU TC835C/KW TC835C/PI
Description 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP64, 14 X 14 MM, 2.70 MM PITCH, PLASTIC, MQFP-64 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PQFP44, 10 X 10 MM, 2 MM HEIGHT, PLASTIC, MQFP-44 1-CH 4-BIT DUAL-SLOPE ADC, PARALLEL ACCESS, PDIP28, 0.600 INCH, PLASTIC, DIP-28
Is it Rohs certified? conform to conform to conform to
Parts packaging code QFP QFP DIP
package instruction QFP, QFP64,.66SQ,32 QFP, QFP44,.5SQ,32 0.600 INCH, PLASTIC, DIP-28
Contacts 64 44 28
Reach Compliance Code compliant compliant compliant
ECCN code EAR99 EAR99 EAR99
Maximum analog input voltage 2 V 2 V 2 V
Minimum analog input voltage -2 V -2 V -2 V
Converter type ADC, DUAL-SLOPE ADC, DUAL-SLOPE ADC, DUAL-SLOPE
JESD-30 code S-PQFP-G64 S-PQFP-G44 R-PDIP-T28
JESD-609 code e3 e3 e3
length 14 mm 10 mm 37.4 mm
Maximum linear error (EL) 0.005% 0.005% 0.005%
Nominal negative supply voltage -5 V -5 V -5 V
Number of analog input channels 1 1 1
Number of digits 4 4 4
Number of functions 1 1 1
Number of terminals 64 44 28
Maximum operating temperature 70 °C 70 °C 70 °C
Output bit code BINARY CODED DECIMAL BINARY CODED DECIMAL BINARY CODED DECIMAL
Output format PARALLEL, 4 BITS PARALLEL, 4 BITS PARALLEL, 4 BITS
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code QFP QFP DIP
Encapsulate equivalent code QFP64,.66SQ,32 QFP44,.5SQ,32 DIP28,.6
Package shape SQUARE SQUARE RECTANGULAR
Package form FLATPACK FLATPACK IN-LINE
Peak Reflow Temperature (Celsius) 260 260 260
power supply +-5 V +-5 V +-5 V
Certification status Not Qualified Not Qualified Not Qualified
Maximum seat height 3.15 mm 2.45 mm 6.35 mm
Nominal supply voltage 5 V 5 V 5 V
surface mount YES YES NO
technology CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL
Terminal surface Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
Terminal form GULL WING GULL WING THROUGH-HOLE
Terminal pitch 0.8 mm 0.8 mm 2.54 mm
Terminal location QUAD QUAD DUAL
Maximum time at peak reflow temperature 40 40 40
width 14 mm 10 mm 15.24 mm
Base Number Matches 1 1 -
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