Overview
The AD9235BCPZ-20, produced by Analog Devices Inc., is a 12-bit, high-performance analog-to-digital converter (ADC) designed for various high-speed applications. This ADC operates on a single 3 V supply and is available in a 32-lead Lead Frame Chip Scale Package (LFCSP). It features a multistage differential pipelined architecture with output error correction logic, ensuring 12-bit accuracy at data rates of 20, 40, and 65 MSPS. The device is suitable for applications requiring high-speed data conversion with low power consumption and excellent signal integrity.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 bits | |
| Sampling Rate | 20, 40, 65 MSPS | |
| Supply Voltage | 2.7 V to 3.6 V | V |
| Power Consumption | 300 mW at 65 MSPS | mW |
| Signal-to-Noise Ratio (SNR) | 70 dBc to Nyquist at 65 MSPS | dBc |
| Spurious Free Dynamic Range (SFDR) | 85 dBc to Nyquist at 65 MSPS | dBc |
| Input Bandwidth | 500 MHz | MHz |
| Differential Non-Linearity (DNL) | ±0.4 LSB | LSB |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 32-Lead LFCSP (5mm x 5mm) |
Key Features
- Single +3 V supply operation (2.7 V to 3.6 V)
- On-chip reference and sample-and-hold amplifier (SHA)
- Differential input with 500 MHz bandwidth
- Flexible analog input: 1 Vp-p to 2 Vp-p
- Offset binary or twos complement data format
- Clock duty cycle stabilizer (DCS)
- Low power consumption: 300 mW at 65 MSPS
- Pinout migration to other ADC models like AD9215, AD9236, AD9245
- Out-of-range (OTR) signal for overflow indication
Applications
- Ultrasound equipment
- IF sampling in communications receivers
- Battery-powered instruments
- Hand-held scopemeters
- Low-cost digital oscilloscopes
Q & A
- What is the resolution of the AD9235BCPZ-20?
The AD9235BCPZ-20 has a resolution of 12 bits. - What are the available sampling rates for the AD9235BCPZ-20?
The available sampling rates are 20, 40, and 65 MSPS. - What is the power consumption of the AD9235BCPZ-20 at 65 MSPS?
The power consumption is 300 mW at 65 MSPS. - What is the input bandwidth of the AD9235BCPZ-20?
The input bandwidth is 500 MHz. - Can the AD9235BCPZ-20 be used in single-ended or differential input configurations?
Yes, it can be configured for both single-ended and differential input operations. - What is the operating temperature range of the AD9235BCPZ-20?
The operating temperature range is -40°C to +85°C. - What package types are available for the AD9235BCPZ-20?
It is available in a 32-Lead LFCSP (5mm x 5mm) package. - Does the AD9235BCPZ-20 have an on-chip reference and SHA?
Yes, it features an on-chip reference and sample-and-hold amplifier (SHA). - What is the purpose of the clock duty cycle stabilizer (DCS) in the AD9235BCPZ-20?
The DCS compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance. - How does the out-of-range (OTR) signal function in the AD9235BCPZ-20?
The OTR signal indicates when the input signal is beyond the selected input range.
