ICL7135CNG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments ICL7135CNG4 is a 4.5-digit (14-bit effective) dual-slope ADC delivering 3 SPS conversion rate with differential parallel output and -3 V to +6 V analog input range in a 28-pin PDIP package. Available in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- ICL7135CNG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ICL7135CNG4?
- 4.5-digit dual-slope conversion architecture provides inherent 50/60 Hz noise rejection for accurate DC measurements in noisy industrial environments
- 14-bit resolution with 3 SPS throughput rate and differential parallel BCD output simplifies direct interfacing to microcontrollers and display drivers
- Wide analog input range from -3 V to +6 V with dual plus-minus 5 V supply enables direct connection to bridge transducers and thermocouples without pre-amplification
What is ICL7135CNG4 used for?
The ICL7135CNG4 is used in precision benchtop multimeters, data loggers, and industrial panel meters where 4.5-digit accuracy and inherent power-line noise rejection are required. It also suits thermocouple and bridge-sensor digitizing circuits in process control equipment that needs stable long-term readings from slowly varying DC signals.
What are the specifications of ICL7135CNG4?
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog Input Voltage-Max | 6V |
| Analog Input Voltage-Min | -3 V |
| Converter Type | ADC, DUAL-SLOPE |
| JESD-30 Code | R-PDIP-T28 |
| JESD-609 Code | e4 |
| Negative Supply Voltage-Nom | -5 V |
| Number of Analog In Channels | 1 |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Bit Code | BINARY CODED DECIMAL |
| Output Format | PARALLEL, 4 BITS |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP28,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Sample Rate | 0.000003MHz |
| Screening Level | TS 16949 |
| Supply Current-Max | 3mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.30 |
Where can I find the ICL7135CNG4 datasheet?
ICL7135CNG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for ICL7135CNG4?
Compatible alternatives and drop-in replacements for ICL7135CNG4:
4-Bit, 1 Func, 1 Channel, Parallel, 4 Bits Access, CMOS, PDIP28
Frequently Asked Questions
What resolution and conversion speed does the ICL7135CNG4 provide in a panel meter application?
The ICL7135CNG4 delivers 4.5-digit (14-bit effective) resolution at 3 samples per second using dual-slope integration. This combination gives readings from -19999 to +19999 counts, ideal for benchtop and panel meters requiring millivolt-level accuracy on DC voltage and temperature inputs.
How does the dual-slope integration method in the ICL7135CNG4 reject 50 Hz and 60 Hz power-line noise?
The ICL7135CNG4 uses dual-slope integration with an integration period set to a multiple of the 50 Hz or 60 Hz cycle, typically 100 ms for 50 Hz rejection. This causes AC interference at those frequencies to integrate to zero, providing better than 60 dB normal-mode rejection without external filtering components.
What package and pin count does the ICL7135CNG4 use, and how does this affect prototyping ease?
The ICL7135CNG4 is housed in a 28-pin PDIP (DIP-28) through-hole package with 2.54 mm pitch, directly insertable into standard breadboards and prototype PCBs. The wide-body DIP format simplifies hand soldering during instrument development and small-batch production runs.
When is the ICL7135CNG4 a better choice than a successive-approximation ADC for slow industrial sensor data?
The ICL7135CNG4 is preferred when the signal source changes slower than 1 Hz, such as a thermocouple reading 0°C to 200°C, because its dual-slope architecture averages noise over a 333 ms integration window. Successive-approximation ADCs at 14-bit resolution require external anti-aliasing filters to achieve equivalent 60 dB noise rejection.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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