TC7129CPL Microchip Technology, TC7129CPL Datasheet

IC ADC 4 1/2DGT LCD DVR 40-DIP

TC7129CPL

Manufacturer Part Number
TC7129CPL
Description
IC ADC 4 1/2DGT LCD DVR 40-DIP
Manufacturer
Microchip Technology
Datasheets

Specifications of TC7129CPL

Display Type
LCD
Configuration
7 Segment
Digits Or Characters
A/D 4.5 Digits
Current - Supply
800µA
Voltage - Supply
6 V ~ 12 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
40-DIP (0.600", 15.24mm)
Resolution (bits)
4.5bit
Input Channel Type
Differential
Data Interface
Parallel
Supply Current
800µA
Digital Ic Case Style
DIP
No. Of Pins
40
Operating Temperature Range
0°C To +70°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Interface
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
TC7129CPLR
TC7129CPLR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TC7129CPL
Manufacturer:
Microchip Technology
Quantity:
135
Part Number:
TC7129CPL
Manufacturer:
MICROCHIP
Quantity:
12 000
Features
• Internal Reference with Low Temperature Drift
• Zero Reading with Zero Input
• Low Noise: 15µV
• High Resolution: 0.05%
• Low Input Leakage Current: 1pA Typ., 10pA Max.
• Precision Null Detectors with True Polarity at Zero
• High-Impedance Differential Input
• Convenient 9V Battery Operation with Low Power
Applications
• Thermometry
• Bridge Readouts: Strain Gauges, Load Cells,
• Digital Meters and Panel Meters:
• Digital Scales, Process Monitors
Device Selection Table
©
Package
- TC7126: 80ppm/°C Typical
- TC7126A: 35ppm/°C Typical
Dissipation: 500µW Typ., 900µW Max.
Null Detectors
- Voltage/Current/Ohms/Power, pH
2002 Microchip Technology Inc.
Code
CKW
CLW
CPL
IPL
40-Pin PDIP (TC7126 Only)
44-Pin PQFP
44-Pin PLCC
40-Pin PDIP
P-P
Package
3-1/2 Digit Analog-to-Digital Converters
-25°C to +85°C
Temperature
0°C to +70°C
0°C to +70°C
0°C to +70°C
Range
General Description
The TC7126A is a 3-1/2 digit CMOS analog-to-digital
converter (ADC) containing all the active components
necessary to construct a 0.05% resolution measure-
ment system. Seven-segment decoders, digit and
polarity drivers, voltage reference, and clock circuit are
integrated on-chip. The TC7126A directly drives a liq-
uid crystal display (LCD), and includes a backplane
driver.
A low cost, high resolution indicating meter requires
only a display, four resistors, and four capacitors. The
TC7126A's extremely low power drain and 9V battery
operation make it ideal for portable applications.
The TC7126A reduces linearity error to less than 1
count. Rollover error (the difference in readings for
equal magnitude, but opposite polarity input signals) is
below ±1 count. High-impedance differential inputs
offer 1pA leakage current and a 10
ance. The 15µV
solid" reading, and the auto-zero cycle ensures a zero
display reading with a 0V input.
The TC7126A features a precision, low drift internal
voltage reference and is functionally identical to the
TC7126. A low drift external reference is not normally
required with the TC7126A.
P-P
TC7126/A
noise performance ensures a "rock
12
DS21458B-page 1
Ω input imped-

Related parts for TC7129CPL

TC7129CPL Summary of contents

Page 1

... IPL 40-Pin PDIP (TC7126 Only) CKW 44-Pin PQFP CLW 44-Pin PLCC 2002 Microchip Technology Inc. © General Description The TC7126A is a 3-1/2 digit CMOS analog-to-digital converter (ADC) containing all the active components necessary to construct a 0.05% resolution measure- ment system. Seven-segment decoders, digit and polarity drivers, voltage reference, and clock circuit are integrated on-chip ...

Page 2

... ANALOG ANALOG COMMON COMMON BUFF BUFF V V INT INT 100's 100 (Backplane) (Backplane Internal Connection 44-Pin PQFP TC7126CKW 3 TC7126ACKW POL 44-Pin PDIP (Reverse Reverse Pin 2 D Configuration 1 TC7126RCPL TC7126ARCPL 1 TC7126RIPL TC7126ARIPL 10 100 1000 POL (Minus Sign) 2002 Microchip Technology Inc. © ...

Page 3

... Typical Application 1MΩ + Analog 0.01µF Input – 0.33 180kΩ µF 0.15µF Note: Pin numbers refer to 40-pin DIP. 2002 Microchip Technology Inc. © 0.1µF TC7126 TC7126A REF REF 31 Segment 2– Drive 22– POL Minus Sign 21 BP ANALOG 32 COMMON ...

Page 4

... TC7126/A Functional Block Diagram DS21458B-page 4 2002 Microchip Technology Inc. © ...

Page 5

... See “Typical Application”. 6: During Auto-Zero phase, current is 10-20µA higher. A 48kHz ocillator increases current by 8µA (Typical). Common current is not included. 2002 Microchip Technology Inc. © *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These ...

Page 6

... During Auto-Zero phase, current is 10-20µA higher. A 48kHz ocillator increases current by 8µA (Typical). Common current is not included. DS21458B-page 6 – 16kHz, and T = +25°C, unless otherwise noted. A Min Typ Max — 55 100 Unit Test Conditions P P-P µ 0V (Note 6) IN 2002 Microchip Technology Inc. © ...

Page 7

... ANALOG COMMON 33 (8) C REF 2002 Microchip Technology Inc. © Description Positive supply voltage. Activates the D section of the units display. Activates the C section of the units display. Activates the B section of the units display. Activates the A section of the units display. Activates the F section of the units display. ...

Page 8

... Pins 40, 39 and 38 make up the oscillator section. For a 48kHz clock (3 readings, 39 per second), connect Pin 40 to the junction of a 180kΩ resistor and a 50pF capacitor. The 180kΩ resistor is tied to Pin 39 and the 50pF capacitor is tied to Pin 38. 2002 Microchip Technology Inc. © ...

Page 9

... Integrate Time Time In a simple dual slope converter, a complete conver- sion requires the integrator output to “ramp-up” and “ramp-down.” 2002 Microchip Technology Inc. © A simple mathematical equation relates the input sig- nal, reference voltage and integration time: EQUATION 3-1: RC Where: ...

Page 10

... DC levels for extended periods. The display font and segment drive assignment are shown in Figure 5-1. FIGURE 5-1: - should be IN 1000 1000 V REF + and DISPLAY FONT AND SEGMENT ASSIGNMENT Display Font 100's 10's 1's 2002 Microchip Technology Inc. © ...

Page 11

... REF mon) and the application requires a 200mV full scale, increase C to 1µF. Rollover error will be held to less REF than 0.5 count. A Mylar type dielectric capacitor is adequate. 2002 Microchip Technology Inc. © 6.3 Integrating Capacitor (C C should be selected to maximize integrator output INT voltage swing without causing output saturation ...

Page 12

... IN ). Typical range connected to analog IN ) (see Figure 7-2). exists in conjunction with CM COMMON MODE VOLTAGE REDUCES AVAILABLE INTEGRATOR ≠ SWING (V COM Input Buffer R I – Integrator – Where: 4000 t = Integration time = I F OSC C = Integration capacitor Integration resistor I 2002 Microchip Technology Inc. © I ...

Page 13

... The analog common potential of V+ – 3V gives a 7V end of battery life voltage. The common potential has a 0.001%/% voltage coefficient and a 15Ω output impedance. 2002 Microchip Technology Inc. © The TC7126A offers a significantly improved analog common temperature coefficient. This potential pro- vides a very stable voltage, suitable for use as a refer- ence ...

Page 14

... E. Lake St. 3902, 3933, Lake Mills, 3903 WI 53551 414-648-2361 DECIMAL POINT AND ANNUNCIATOR DRIVES or Display Annunciator V+ 4049 To LCD 21 BP Decimal Point GND 37 TEST To Backplane Multiple Decimal Point or Annunciator Driver LCD To LCD Decimal Decimal Point Point 4030 GND 2002 Microchip Technology Inc. © ...

Page 15

... C2 1Ω 20V 10% 90kΩ 200V 10kΩ 3pF to 10pF, Variable C2 = 132pF, Variable COM 2002 Microchip Technology Inc. © EQUATION 8-1: Displayed (Reading) = The display will over range for R R (see Figure 8-2). STANDARD FIGURE 8-2: R STANDARD R ...

Page 16

... R 1 +25°C FIGURE 8- 5.6kΩ TC7126A + 0.7%/°C PTC - REF TC7126A 50kΩ REF 50kΩ COMMON V- POSITIVE TEMPERATURE COEFFICIENT RESISTOR TEMPERATURE SENSOR 9V + 160kΩ 1N4148 1 IN 20kΩ TC7126A REF 20kΩ REF COMMON 2002 Microchip Technology Inc. © ...

Page 17

... Component Taping Orientation for 44-Pin PQFP Devices Carrier Tape, Number of Components Per Reel and Reel Size Package 44-Pin PQFP Note: Drawing does not represent total number of pins. 2002 Microchip Technology Inc. © User Direction of Feed P Standard Reel Component Orientation for TR Suffix Device ...

Page 18

... MIN. .700 (17.78) .610 (15.50) Dimensions: inches (mm) .021 (0.53) .013 (0.33) .630 (16.00) .591 (15.00) .032 (0.81) .026 (0.66) .020 (0.51) MIN. .120 (3.05) .090 (2.29) Dimensions: inches (mm) 2002 Microchip Technology Inc. © ...

Page 19

... Package Dimensions (Continued) 44-Pin PQFP PIN 1 .018 (0.45) .012 (0.30) .031 (0.80) TYP. .398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65) 2002 Microchip Technology Inc. © 7° MAX. .009 (0.23) .005 (0.13) .398 (10.10) .390 (9.90) .557 (14.15) .537 (13.65) .096 (2.45) MAX. ...

Page 20

... The Microchip Worldwide Site (www.microchip.com) Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. DS21458B-page 20 2002 Microchip Technology Inc. © ...

Page 21

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2002, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 22

... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology Taiwan 11F-3, No. 207 ...

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