Overview
The AD9238BSTRL-40 is a high-performance, dual 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed for applications requiring high-speed and high-accuracy data conversion. Fabricated on an advanced CMOS process, the AD9238 features dual high-performance sample-and-hold amplifiers (SHAs) and an integrated voltage reference. It operates at a sample rate of 40 MSPS and is specified over the industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 12 bits | |||
| Sample Rate | 40 MSPS | |||
| Input Range | 1 V p-p to 2 V p-p | |||
| Input Bandwidth | 500 MHz (3 dB bandwidth) | |||
| Power Consumption | 330 | mW | ||
| High Level Input Voltage | 2.0 | 2.0 | 2.0 | V |
| Low Level Input Voltage | 0.8 | 0.8 | 0.8 | V |
| Channel Isolation | 85 dB at fIN = 10 MHz | |||
| Package Type | 64-Lead Low Profile Quad Flat Package (LQFP) | |||
Key Features
- Dual high-performance sample-and-hold amplifiers (SHAs) with integrated voltage reference.
- 12-bit resolution with multistage differential pipelined architecture and output error correction logic.
- Flexible analog input range: 1 V p-p to 2 V p-p, supporting both differential and single-ended applications.
- High input bandwidth of 500 MHz (3 dB bandwidth) and exceptional crosstalk immunity (> 85 dB).
- Low power consumption: 330 mW at 40 MSPS.
- Pin-compatible with the AD9248, a 14-bit ADC.
- Clock duty cycle stabilizer and output data multiplexer option.
- Available in Pb-free, space-saving 64-lead LQFP or LFCSP packages.
Applications
- Ultrasound equipment
- Direct conversion or IF sampling receivers
- WB-CDMA, CDMA2000, WiMAX
- Battery-powered instruments
- Hand-held scopemeters and low-cost digital oscilloscopes
Q & A
- What is the resolution of the AD9238BSTRL-40?
The AD9238BSTRL-40 has a resolution of 12 bits.
- What are the sample rate options for the AD9238?
The AD9238 is available in speed grades of 20 MSPS, 40 MSPS, and 65 MSPS.
- What is the input bandwidth of the AD9238?
The input bandwidth of the AD9238 is 500 MHz (3 dB bandwidth).
- How much power does the AD9238BSTRL-40 consume at 40 MSPS?
The AD9238BSTRL-40 consumes approximately 330 mW at 40 MSPS.
- What is the channel isolation of the AD9238 at 10 MHz input frequency?
The channel isolation is greater than 85 dB at an input frequency of 10 MHz.
- In what package types is the AD9238 available?
The AD9238 is available in 64-lead Low Profile Quad Flat Package (LQFP) and Lead Frame Chip Scale Package (LFCSP).
- Is the AD9238 pin-compatible with other ADC models?
Yes, the AD9238 is pin-compatible with the AD9248, a 14-bit ADC.
- What are some of the key applications of the AD9238?
The AD9238 is used in ultrasound equipment, direct conversion or IF sampling receivers, WB-CDMA, CDMA2000, WiMAX, battery-powered instruments, and hand-held scopemeters.
- Does the AD9238 support both differential and single-ended input applications?
Yes, the AD9238 supports both differential and single-ended input applications.
- What is the operating temperature range of the AD9238BSTRL-40?
The operating temperature range is −40°C to +85°C.
