ADC1242CIJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
Texas Instruments ADC1242CIJ is a 12-bit successive approximation ADC accepting ±5 V bipolar analog inputs in a 28-pin ceramic DIP package. Offers up to 13.8 µs conversion time and 0.0244% maximum linearity error for precise data acquisition. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 28
- Lifecycle
- OBSOLETE
- Datasheet
- ADC1242CIJ Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ADC1242CIJ?
- 12-bit successive approximation architecture with ±5 V bipolar input range (−5.05 V to +5.05 V) covers a wide analog signal span without external attenuation
- Maximum conversion time of 13.8 µs enables up to 72 kSPS throughput in industrial data acquisition and signal processing systems
- 0.0244% maximum linearity error (roughly ±1 LSB at 12-bit) ensures high measurement accuracy for sensor conditioning and instrumentation
What is ADC1242CIJ used for?
The ADC1242CIJ is designed for industrial process control, precision instrumentation, and data acquisition systems where 12-bit resolution and bipolar analog inputs are required. Its ceramic DIP-28 package and dual ±5 V supply make it suitable for legacy board replacements and lab instrument designs that require reliable through-hole assembly. The device also suits medical monitoring and scientific measurement equipment demanding stable linearity and accurate conversion across varying signal amplitudes.
What are the specifications of ADC1242CIJ?
| Reach Compliance Code | Unknown |
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.05V |
| Analog Input Voltage-Min | -5.05 V |
| Conversion Time-Max | 13.8 µs |
| Converter Type | ADC, SUCCESSIVE APPROXIMATION |
| JESD-30 Code | R-GDIP-T28 |
| JESD-609 Code | e0 |
| Linearity Error-Max (EL) | 0.0244% |
| Negative Supply Voltage-Nom | -5 V |
| Number of Analog In Channels | 1 |
| Number of Bits | 12 |
| Number of Functions | 1 |
| Output Bit Code | 2'S COMPLEMENT BINARY |
| Output Format | PARALLEL, WORD |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP28,.6 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Sample and Hold / Track and Hold | TRACK |
| Supply Current-Max | 6mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.30 |
Where can I find the ADC1242CIJ datasheet?
ADC1242CIJ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for ADC1242CIJ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the resolution and conversion speed of the ADC1242CIJ, and how do these specs compare for industrial sensor logging?
The ADC1242CIJ provides 12-bit resolution with a maximum conversion time of 13.8 µs, enabling sampling rates near 72 kSPS. For industrial sensor logging applications such as pressure or temperature acquisition, 12-bit resolution gives 4096 discrete levels across the ±5 V input range, translating to approximately 2.4 mV per LSB. This accuracy is sufficient for most analog sensor monitoring tasks.
What bipolar input voltage range does the ADC1242CIJ support, and how does the dual-supply requirement affect board design?
The ADC1242CIJ accepts analog inputs from −5.05 V to +5.05 V, requiring a dual ±5 V power supply. This bipolar range allows direct connection to AC-coupled or bridge sensor outputs without a separate signal conditioning stage to shift the baseline. Designers must provide a split supply, which adds a negative rail regulator but eliminates offset correction circuitry, simplifying the analog front-end.
How does the ceramic DIP-28 package of the ADC1242CIJ benefit high-reliability or legacy system applications?
The ceramic DIP-28 (CERDIP-28) package withstands operating temperatures well beyond commercial grades and provides hermetic sealing, making the ADC1242CIJ suitable for military, aerospace, or harsh-environment industrial equipment. Through-hole mounting simplifies rework and hand-assembly in low-volume or prototype boards. Ceramic packages also maintain performance stability over a wider temperature excursion than plastic equivalents.
What is the linearity error specification of the ADC1242CIJ, and how does it impact measurement accuracy in a 12-bit design?
The ADC1242CIJ specifies a maximum linearity error of 0.0244%, which over a 10 V full-scale (±5 V) range corresponds to approximately 2.44 mV of non-linearity. At 12-bit resolution with an LSB size of about 2.44 mV, this represents roughly ±1 LSB integral non-linearity. For most industrial and instrumentation designs requiring 12-bit effective accuracy, this level of linearity is well within acceptable limits.
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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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