Overview
The TLC7135CDW, produced by Texas Instruments, is a 4 1/2-digit, dual-slope-integrating analog-to-digital converter (ADC) manufactured using highly efficient CMOS technology. This converter is designed to provide interfaces to both microprocessors and visual displays, making it suitable for a variety of measurement and data acquisition applications. The TLC7135CDW offers high precision and low noise characteristics, making it ideal for high-accuracy measurements.
Key Specifications
| Specification | Value |
|---|---|
| Resolution | 4 1/2 digits, 50 ppm (one part in 20,000) |
| Linearity Error | Maximum of one count |
| Zero Error | Less than 10 µV |
| Zero Drift | Less than 0.5 µV/°C |
| Input Current | Less than 10 pA |
| Rollover Error | ±1 count |
| Operating Temperature Range | 0°C to 70°C |
| Package Type | SOIC (DW), 28 pins |
| Power Supplies | ±5-V, 5-V operation possible with input signal variation of ±1.5 V from midsupply |
Key Features
- Zero Reading for 0-V Input
- Precision Null Detection With True Polarity at Zero
- 1-pA Typical Input Current
- True Differential Input
- Multiplexed Binary-Coded-Decimal (BCD) Output
- Low Rollover Error: ±1 Count Max
- Control Signals Allow Interfacing With UARTs or Microprocessors
- Autoranging Capability With Over-and Under-Range Signals
- TTL-Compatible Outputs
- Second Source to Teledyne TSC7135, Intersil ICL7135, Maxim ICL7135, and Siliconix Si7135
- CMOS Technology
Applications
The TLC7135CDW is suitable for various applications requiring high-accuracy analog-to-digital conversion, including:
- Microprocessor-based measurement systems
- Remote data acquisition systems with data transfer through UARTs
- Visual display interfaces such as LED or LCD decoder/drivers
- High-accuracy measurement instruments in industrial, medical, and scientific fields
Q & A
- What is the resolution of the TLC7135CDW?
The TLC7135CDW has a resolution of 4 1/2 digits with 50 ppm (one part in 20,000). - What is the typical input current of the TLC7135CDW?
The typical input current is less than 10 pA. - What is the operating temperature range of the TLC7135CDW?
The operating temperature range is from 0°C to 70°C. - What type of package does the TLC7135CDW come in?
The TLC7135CDW comes in a SOIC (DW) package with 28 pins. - Can the TLC7135CDW be used with microprocessors?
Yes, the TLC7135CDW has control signals that allow interfacing with microprocessors and UARTs. - What is the autoranging capability of the TLC7135CDW?
The TLC7135CDW has autoranging capability with over-and under-range signals. - What is the maximum linearity error of the TLC7135CDW?
The maximum linearity error is one count. - What is the zero error and zero drift of the TLC7135CDW?
The zero error is less than 10 µV, and the zero drift is less than 0.5 µV/°C. - Can the TLC7135CDW be used in high-accuracy measurement applications?
Yes, the TLC7135CDW is designed for high-accuracy measurements with low noise characteristics. - What power supplies can the TLC7135CDW operate with?
The TLC7135CDW can operate with ±5-V power supplies, and 5-V operation is possible with input signal variation of ±1.5 V from midsupply.
