Overview
The AD9235BRUZ-65, produced by Analog Devices Inc., is a high-performance 12-bit analog-to-digital converter (ADC) designed for various high-speed applications. This ADC operates at sample rates of 20, 40, and 65 mega-samples per second (MSPS) and features a multistage differential pipelined architecture with output error correction logic. It is fabricated on an advanced CMOS process and is available in 28-lead TSSOP and 32-lead LFCSP packages. The AD9235 is suitable for applications in communications, imaging, and medical ultrasound, offering power and cost savings over previous ADC models.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sample Rates | 20, 40, 65 MSPS |
| Supply Voltage | Single +3 V (2.7 V to 3.6 V) |
| Power Consumption | 300 mW at 65 MSPS |
| Input Type | Differential with 500 MHz bandwidth |
| Input Range | 1 Vp-p to 2 Vp-p |
| SNR | 70 dBc to Nyquist at 65 MSPS |
| SFDR | 85 dBc to Nyquist at 65 MSPS |
| DNL | ±0.4 LSB |
| Operating Temperature | –40°C to +85°C |
| Package | 28-lead TSSOP, 32-lead LFCSP |
Key Features
- High-performance sample-and-hold amplifier (SHA) and on-chip voltage reference
- Flexible analog input: 1 Vp-p to 2 Vp-p, single-ended or differential operation
- Offset binary or twos complement data format
- Clock duty cycle stabilizer (DCS) for wide variations in clock duty cycle
- Out-of-range (OTR) signal for overflow indication
- Pinout compatible with AD9214-65 for easy upgrade from 10-bit to 12-bit ADC
- Separate digital output driver supply for 2.5 V and 3.3 V logic families
Applications
- Ultrasound equipment
- IF sampling in communications receivers
- Battery-powered instruments
- Hand-held scopemeters
- Low-cost digital oscilloscopes
Q & A
- What are the sample rates of the AD9235BRUZ-65?
The AD9235BRUZ-65 operates at sample rates of 20, 40, and 65 MSPS.
- What is the power consumption of the AD9235BRUZ-65 at 65 MSPS?
The power consumption is 300 mW at 65 MSPS.
- What are the available package types for the AD9235BRUZ-65?
The AD9235BRUZ-65 is available in 28-lead TSSOP and 32-lead LFCSP packages.
- What is the operating temperature range of the AD9235BRUZ-65?
The operating temperature range is –40°C to +85°C.
- Can the AD9235BRUZ-65 be used in single-ended applications?
- What is the significance of the clock duty cycle stabilizer (DCS) in the AD9235BRUZ-65?
The DCS compensates for wide variations in the clock duty cycle, maintaining excellent overall ADC performance.
- How does the out-of-range (OTR) signal work in the AD9235BRUZ-65?
The OTR signal indicates an overflow condition and can be used with the most significant bit to determine low or high overflow.
- Is the AD9235BRUZ-65 compatible with other ADC models for easy upgrades?
- What are some typical applications of the AD9235BRUZ-65?
The AD9235BRUZ-65 is suitable for applications in communications, imaging, and medical ultrasound, among others.
- Does the AD9235BRUZ-65 support different logic families for digital output?
