Overview
The AD9235BRUZ-20, produced by Analog Devices Inc., is a 12-bit, high-performance analog-to-digital converter (ADC) that operates at sample rates of 20, 40, and 65 MSPS. This monolithic ADC features a single 3 V supply operation and is designed for applications requiring high accuracy and low power consumption. The AD9235 uses a multistage differential pipelined architecture with output error correction logic, ensuring 12-bit accuracy across the full operating temperature range of -40°C to +85°C. It is fabricated on an advanced CMOS process and is available in 28-lead TSSOP and 32-lead LFCSP packages.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12 bits | |
| Sample Rate | 20, 40, 65 MSPS | |
| Supply Voltage | 2.7 V to 3.6 V | V |
| Power Consumption (at 65 MSPS) | 300 mW | mW |
| SNR to Nyquist at 65 MSPS | 70 dBc | dBc |
| SFDR to Nyquist at 65 MSPS | 85 dBc | dBc |
| DNL | ±0.4 LSB | LSB |
| Analog Input Bandwidth | 500 MHz | MHz |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Options | 28-Lead TSSOP, 32-Lead LFCSP |
Key Features
- Single +3 V supply operation (2.7 V to 3.6 V)
- High SNR and SFDR: 70 dBc and 85 dBc to Nyquist at 65 MSPS
- Low power consumption: 300 mW at 65 MSPS
- On-chip reference and sample-and-hold amplifier (SHA)
- Differential input with 500 MHz bandwidth, configurable for single-ended or differential operation
- Flexible analog input range: 1 Vp-p to 2 Vp-p
- Offset binary or twos complement data format
- Clock duty cycle stabilizer (DCS) for maintaining ADC performance over wide clock pulse widths
- 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 AD9235BRUZ-20? The AD9235BRUZ-20 has a resolution of 12 bits.
- What are the available sample rates for the AD9235BRUZ-20? The AD9235BRUZ-20 operates at sample rates of 20, 40, and 65 MSPS.
- What is the power consumption of the AD9235BRUZ-20 at 65 MSPS? The power consumption is 300 mW at 65 MSPS.
- What is the operating temperature range of the AD9235BRUZ-20? The operating temperature range is -40°C to +85°C.
- What types of packages are available for the AD9235BRUZ-20? The AD9235BRUZ-20 is available in 28-lead TSSOP and 32-lead LFCSP packages.
- Does the AD9235BRUZ-20 support single-ended or differential input configurations? Yes, it supports both single-ended and differential input configurations.
- What is the function of the clock duty cycle stabilizer (DCS) in the AD9235BRUZ-20? The DCS maintains overall ADC performance over a wide range of clock pulse widths.
- How does the out-of-range (OTR) signal work in the AD9235BRUZ-20? The OTR signal indicates when the input signal is beyond the selected input range.
- What are some typical applications of the AD9235BRUZ-20? Typical applications include ultrasound equipment, IF sampling in communications receivers, battery-powered instruments, hand-held scopemeters, and low-cost digital oscilloscopes.
- Can the AD9235BRUZ-20 be used in multiplexed systems? Yes, it is suitable for multiplexed systems that switch full-scale voltage levels in successive channels.
- Is the AD9235BRUZ-20 compatible with different logic families? Yes, it features a separate digital output driver supply to accommodate 2.5 V and 3.3 V logic families.
