Overview
The DDC264CKZAWR is a 20-bit, 64-channel, current-input analog-to-digital (A/D) converter produced by Texas Instruments. This device combines both current-to-voltage and A/D conversion, allowing 64 separate low-level current output devices, such as photodiodes, to be directly connected to its inputs and digitized. The DDC264 uses a proven dual switched integrator front-end architecture, enabling continuous current integration and providing a very stable offset and loss-less collection of the input current.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Input Channels | 64 | |
| Resolution | 20 bits | |
| Sample Rate (max) | 6.25 kSPS | |
| Integration Time | 160 µs to 1 s | |
| Noise | 6.3 ppm of FSR (rms) | |
| Integral Linearity Error | ±0.025% of Reading ±1 ppm of FSR | |
| Input Bias Current | ±0.5 pA to ±5 pA | |
| Operating Temperature Range | 0 to 70 °C | |
| Package Type | 100-Pin NFBGA (ZAW) | |
| Power Supply | AVDD: 5 V, DVDD: 3.3 V | |
| Power Consumption | 3 mW/channel |
Key Features
- Proven high-precision, true integrating architecture with 100% charge collection.
- Easy upgrade for existing DDC family applications.
- Very low power consumption: 3 mW/channel.
- Extremely linear: INL = ±0.025% of Reading ±1 ppm of FSR.
- Low noise: 6.3 ppm of FSR.
- Adjustable full-scale range and adjustable speed.
- Data rates up to 6 kSPS with 20-bit performance.
- Integration times as low as 160 µs.
- Daisy-chainable serial interface.
- In-package bypass capacitors simplify PCB design.
Applications
- CT Scanner Data Acquisition Systems (DAS).
- Photodiode sensors.
- X-Ray detection systems.
Q & A
- What is the resolution of the DDC264CKZAWR?
The DDC264CKZAWR has a resolution of 20 bits.
- How many input channels does the DDC264CKZAWR have?
The DDC264CKZAWR has 64 input channels.
- What is the maximum sample rate of the DDC264CKZAWR?
The maximum sample rate is up to 6.25 kSPS.
- What is the integration time range of the DDC264CKZAWR?
The integration time ranges from 160 µs to 1 s.
- What is the noise level of the DDC264CKZAWR?
The noise level is 6.3 ppm of FSR (rms).
- What is the operating temperature range of the DDC264CKZAWR?
The operating temperature range is from 0 to 70 °C.
- What type of package does the DDC264CKZAWR use?
The DDC264CKZAWR uses a 100-Pin NFBGA (ZAW) package.
- What are the power supply requirements for the DDC264CKZAWR?
The power supply requirements are AVDD: 5 V and DVDD: 3.3 V.
- What is the power consumption per channel of the DDC264CKZAWR?
The power consumption per channel is 3 mW.
- What are some common applications of the DDC264CKZAWR?
Common applications include CT Scanner DAS, photodiode sensors, and X-Ray detection systems.
