Overview
The LTC2237IUH is a 10-bit, 40Msps (mega-samples per second) low-power analog-to-digital converter (ADC) produced by Analog Devices Inc. This device is part of the LTC2238/LTC2237/LTC2236 family, designed for digitizing high-frequency, wide dynamic range signals. It is particularly suited for demanding imaging and communications applications due to its excellent AC performance, which includes a signal-to-noise ratio (SNR) of 61.8dB and a spurious free dynamic range (SFDR) of 85dB for signals at the Nyquist frequency.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 10-bit |
| Sampling Rate | 40Msps |
| Input Range | 1V P-P or 2V P-P with differential drive |
| Supply Voltage | 3V |
| Operating Temperature | -40°C to 85°C (industrial grade) |
| Integral Nonlinearity (INL) | ±0.1LSB (typ), ±0.5LSB over temperature |
| Differential Nonlinearity (DNL) | ±0.05LSB (typ), ±0.5LSB over temperature |
| Signal-to-Noise Ratio (SNR) | 61.8dB |
| Spurious Free Dynamic Range (SFDR) | 85dB |
| Package | 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) |
Key Features
- Low power operation with a single 3V supply.
- Optional clock duty cycle stabilizer for high performance at full speed across a wide range of clock duty cycles.
- Shutdown and nap modes for power management.
- Pin-compatible with other members of the LTC223x family.
- Separate output supply allows the outputs to drive 0.5V to 3.6V logic.
- Single-ended CLK input controls converter operation.
- Internal 1.5V bandgap reference with selectable input ranges (1V or 2V P-P differential).
- Digital output buffers powered by OVDD and OGND, isolated from the ADC power and ground.
Applications
- Demanding imaging applications, such as medical imaging and industrial imaging.
- Communications applications, including wireless and wired communication systems.
- High-frequency signal processing in various industrial and scientific instruments.
- Low-power, high-speed data acquisition systems.
Q & A
- What is the resolution and sampling rate of the LTC2237IUH?
The LTC2237IUH is a 10-bit ADC with a sampling rate of 40Msps.
- What is the typical signal-to-noise ratio (SNR) of the LTC2237IUH?
The SNR is typically 61.8dB for signals at the Nyquist frequency.
- What are the operating temperature ranges for the LTC2237IUH?
The operating temperature range is -40°C to 85°C (industrial grade).
- Does the LTC2237IUH support differential or single-ended input?
The LTC2237IUH supports both differential and single-ended input, with optimal performance achieved using differential drive.
- What is the power supply requirement for the LTC2237IUH?
The device operates on a single 3V supply.
- Can the output logic levels be adjusted?
Yes, the outputs can drive 0.5V to 3.6V logic levels.
- What is the package type of the LTC2237IUH?
The device is available in a 32-Lead QFN (5mm x 5mm x 0.75mm w/ EP) package.
- Does the LTC2237IUH have power-saving modes?
Yes, it has shutdown and nap modes for power management.
- Is the LTC2237IUH pin-compatible with other ADCs in the same family?
Yes, it is pin-compatible with other members of the LTC223x family.
- What is the purpose of the clock duty cycle stabilizer in the LTC2237IUH?
The clock duty cycle stabilizer allows for high performance at full speed across a wide range of clock duty cycles.
