Overview
The LTC2271IUKG, manufactured by Analog Devices Inc., is a 2-channel, simultaneous sampling 16-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC is particularly suited for demanding communications applications, offering excellent AC performance with a signal-to-noise ratio (SNR) of 84.1 dB and a spurious free dynamic range (SFDR) of 99 dB. It features low power consumption, with a total power of 185 mW, and operates on a single 1.8V supply. The device is packaged in a 52-lead QFN (7mm x 8mm) with an exposed pad, making it compact and suitable for various high-performance applications.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of A/D Converters | 2 | |
| Resolution | 16-bit | |
| Sampling Rate | 20 Msps | |
| Architecture | Pipelined | |
| Reference Type | External, Internal | |
| Voltage Supply (Analog) | 1.7 V ~ 1.9 V | V |
| Voltage Supply (Digital) | 1.7 V ~ 1.9 V | V |
| Input Type | Differential | |
| Operating Temperature Range | -40°C ~ 85°C | °C |
| Package Type | 52-WFQFN Exposed Pad | |
| SNR | 84.1 dB | dB |
| SFDR | 99 dB | dB |
| Integral Non-Linearity (INL) | ±1 LSB (typ) | LSB |
| Differential Non-Linearity (DNL) | ±0.2 LSB (typ) | LSB |
| Transition Noise | 1.44 LSB RMS | LSB RMS |
| Data Interface | Serial LVDS |
Key Features
- Simultaneous sampling of two channels
- Serial LVDS outputs with optional internal termination and adjustable output levels
- Low power consumption: 185 mW total, 92 mW per channel
- Single 1.8V supply
- Selectable input ranges: 1V P-P to 2.1V P-P
- 200 MHz full-power bandwidth S/H
- Shutdown and nap modes for power management
- Serial SPI port for configuration
- Pin compatible with LTC2190: 16-bit, 25 Msps, 104 mW
Applications
- Low Power Instrumentation
- Software-Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- RADAR processing
- Digital oscilloscopes
- CMOS Image sensors for mobile applications
- Medical Instrumentation and medical imaging
- Music recording
- Digital signal processing
- Scientific instruments
- Rotary encoder and transducer applications
Q & A
- What is the resolution and sampling rate of the LTC2271IUKG?
The LTC2271IUKG has a 16-bit resolution and a sampling rate of 20 Msps.
- What is the power consumption of the LTC2271IUKG?
The total power consumption is 185 mW, with 92 mW per channel.
- What is the operating temperature range of the LTC2271IUKG?
The operating temperature range is -40°C to 85°C.
- What type of data interface does the LTC2271IUKG use?
The LTC2271IUKG uses a serial LVDS data interface.
- What are the key applications of the LTC2271IUKG?
Key applications include low power instrumentation, software-defined radios, portable medical imaging, and multi-channel data acquisition.
- What is the package type of the LTC2271IUKG?
The LTC2271IUKG is packaged in a 52-WFQFN Exposed Pad.
- What are the SNR and SFDR specifications of the LTC2271IUKG?
The SNR is 84.1 dB, and the SFDR is 99 dB.
- Does the LTC2271IUKG support shutdown and nap modes?
Yes, the LTC2271IUKG supports shutdown and nap modes for power management.
- Is the LTC2271IUKG pin compatible with other ADCs?
Yes, it is pin compatible with the LTC2190: 16-bit, 25 Msps, 104 mW.
- What types of input signals can the ENC+ and ENC– inputs handle?
The ENC+ and ENC– inputs can be driven differentially or single-ended with sine wave, PECL, LVDS, TTL, or CMOS inputs.
- Does the LTC2271IUKG have an internal clock duty cycle stabilizer?
Yes, it has an internal clock duty cycle stabilizer to ensure high performance at full speed for a wide range of clock duty cycles.
