Overview
The AD9238BSTZRL-20 is a high-performance, dual 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed to operate on a single 3 V supply and is available in a 64-lead LQFP or LF-CSP package. It features dual high-performance sample-and-hold amplifiers and an integrated voltage reference, making it suitable for a variety of applications requiring high-speed and high-accuracy analog-to-digital conversion.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Bits | 12 | |
| Sampling Rate | 20/40/65 | MSPS |
| Supply Voltage (Analog) | 2.7 V to 3.6 V | V |
| Supply Voltage (Digital) | 2.25 V to 3.6 V | V |
| Power Dissipation | 180 mW (20 MSPS), 330 mW (40 MSPS), 600 mW (65 MSPS) | mW |
| Input Type | Differential | |
| Input Bandwidth | 500 MHz, 3 dB | |
| Signal to Noise Ratio (SNR) | 70 dB (to Nyquist, AD9238-65) | dB |
| Spurious Free Dynamic Range (SFDR) | 80.5 dBc (to Nyquist, AD9238-65) | dBc |
| Channel Isolation | 85 dB at fIN = 10 MHz | dB |
| Operating Temperature Range | -40°C to +85°C | °C |
Key Features
- Integrated dual 12-bit ADC with dual high-performance sample-and-hold amplifiers and an integrated voltage reference.
- Single 3 V supply operation (2.7 V to 3.6 V).
- Low power consumption: 180 mW (20 MSPS), 330 mW (40 MSPS), and 600 mW (65 MSPS).
- Differential input with 500 MHz, 3 dB bandwidth.
- Exceptional crosstalk immunity > 85 dB.
- Flexible analog input: 1 V p-p to 2 V p-p range.
- Offset binary or twos complement data format.
- Clock duty cycle stabilizer.
- Output datamux option.
- Multiplexed data output option enables single-port operation from either Data Port A or Data Port B.
Applications
- Communications: Direct conversion or IF sampling receivers, WB-CDMA, CDMA2000, WiMAX.
- Imaging and medical ultrasound equipment.
- Battery-powered instruments and hand-held scopemeters.
- Low-cost, digital oscilloscopes.
Q & A
- What is the AD9238BSTZRL-20?
The AD9238BSTZRL-20 is a dual 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc.
- What are the sampling rate options for the AD9238BSTZRL-20?
The AD9238BSTZRL-20 is available in three speed grades: 20 MSPS, 40 MSPS, and 65 MSPS.
- What is the supply voltage range for the AD9238BSTZRL-20?
The component operates on a single 3 V supply with a range of 2.7 V to 3.6 V for analog and 2.25 V to 3.6 V for digital.
- What is the power dissipation of the AD9238BSTZRL-20?
The power dissipation varies by speed grade: 180 mW (20 MSPS), 330 mW (40 MSPS), and 600 mW (65 MSPS).
- What is the input type and bandwidth of the AD9238BSTZRL-20?
The input is differential with a 500 MHz, 3 dB bandwidth.
- What are the key features of the AD9238BSTZRL-20?
Key features include integrated dual 12-bit ADC, low power consumption, exceptional crosstalk immunity, flexible analog input, and a clock duty cycle stabilizer.
- What are the typical applications of the AD9238BSTZRL-20?
Applications include communications, imaging and medical ultrasound, battery-powered instruments, and low-cost digital oscilloscopes.
- What is the operating temperature range of the AD9238BSTZRL-20?
The component operates over an industrial temperature range of -40°C to +85°C.
- Does the AD9238BSTZRL-20 support multiplexed data output?
Yes, it supports multiplexed data output option enabling single-port operation from either Data Port A or Data Port B.
- What data formats are supported by the AD9238BSTZRL-20?
The component supports offset binary or twos complement data format.
