Overview
The DDC232CKZXGR is a 32-channel, current-input analog-to-digital converter (A/D) produced by Texas Instruments. This device is designed to directly measure low-level currents from sources such as photodiodes, combining both current-to-voltage and A/D conversion in a single chip. It operates with a +5V analog supply and a +2.7V to +3.6V digital supply, and is available in two versions: the DDC232C for low-power applications and the DDC232CK for higher speed requirements. The device features a dual-switched integrator front-end for each of the 32 inputs, allowing for continuous current integration.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Analog Supply Voltage (AVDD) | 4.75 to 5.25 | V |
| Digital Supply Voltage (DVDD) | 2.7 to 3.6 | V |
| Operating Temperature | 0°C to +70°C | °C |
| Storage Temperature | –60°C to +150°C | °C |
| Junction Temperature (TJ) | +150°C | °C |
| Resolution | 20 bits (default), 16 bits (optional) | bits |
| Data Rate | Up to 6.2 kSPS | kSPS |
| Integration Time | 166.5 ms to 1 s | ms |
| Integral Linearity Error | ±0.025% of Reading ± 1.0 ppm of FSR | % and ppm |
| Noise | 5.3 ppm of FSR, rms | ppm |
| Power Consumption | 7 mW/channel | mW/channel |
| Package | 64-pin NFBGA |
Key Features
- Single-chip solution for direct measurement of 32 low-level current inputs.
- High-precision, true integrating function.
- Very low noise: 5.3 ppm of Full-Scale Range (FSR).
- Low power consumption: 7 mW/channel.
- Adjustable full-scale range and integration times.
- Daisy-chainable serial interface for multi-device systems.
- In-package bypass capacitors to simplify PCB design.
- Continuous current integration with dual-switched integrator front-end.
Applications
- CT Scanner Data Acquisition Systems (DAS).
- Photodiode sensors.
- X-Ray detection systems.
Q & A
- What is the DDC232CKZXGR?
The DDC232CKZXGR is a 32-channel, current-input analog-to-digital converter produced by Texas Instruments. - What are the operating supply voltages for the DDC232CKZXGR?
The device operates with a +5V analog supply and a +2.7V to +3.6V digital supply. - What is the resolution of the DDC232CKZXGR?
The resolution is 20 bits by default, but can be set to 16 bits if required. - What is the maximum data rate of the DDC232CKZXGR?
The maximum data rate is up to 6.2 kSPS. - What is the range of integration times for the DDC232CKZXGR?
The integration times range from 166.5 ms to 1 s. - What is the integral linearity error of the DDC232CKZXGR?
The integral linearity error is ±0.025% of Reading ± 1.0 ppm of FSR. - How much power does the DDC232CKZXGR consume per channel?
The power consumption is 7 mW per channel. - What type of package does the DDC232CKZXGR come in?
The device comes in a 64-pin NFBGA package. - Can the DDC232CKZXGR be daisy-chained?
Yes, the device has a daisy-chainable serial interface for multi-device systems. - What are some common applications of the DDC232CKZXGR?
Common applications include CT Scanner DAS, photodiode sensors, and X-Ray detection systems.
