Overview
The LTC2156-12, produced by Analog Devices Inc., is a high-performance, dual 12-bit analog-to-digital converter (ADC) designed for digitizing high-frequency, wide dynamic range signals. This ADC is part of the LTC2157-12/LTC2156-12/LTC2155-12 family and is optimized for demanding communications applications. It features a sampling rate of 210 Msps, a single 1.8V supply, and low power consumption of 592 mW. The device is known for its excellent AC performance, including a signal-to-noise ratio (SNR) of 68.5 dB and a spurious free dynamic range (SFDR) of 90 dB. The LTC2156-12 is housed in a compact 64-lead QFN package, making it suitable for applications requiring high-speed data acquisition and processing.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 12 |
| Sampling Rate | 210 Msps |
| Input Type | Differential |
| Data Interface | DDR LVDS - Parallel |
| Configuration | S/H-ADC |
| Ratio - S/H:ADC | 1:1 |
| Architecture | Pipelined |
| Reference Type | External, Internal |
| Voltage - Supply, Analog/Digital | 1.7 V ~ 1.9 V |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 64-QFN (9x9) |
| Power Dissipation | 592 mW |
| Integral Nonlinearity (INL) | ±0.26 LSB (typ) |
| Differential Nonlinearity (DNL) | ±0.16 LSB (typ) |
| Signal-to-Noise Ratio (SNR) | 68.5 dB |
| Spurious Free Dynamic Range (SFDR) | 90 dB |
Key Features
- High-speed sampling rate of 210 Msps
- Single 1.8V supply
- Low power consumption: 592 mW
- DDR LVDS outputs
- Easy-to-drive 1.5V P-P input range
- 1.25 GHz full-power bandwidth sample-and-hold (S/H)
- Optional clock duty cycle stabilizer
- Low power sleep and nap modes
- Serial SPI port for configuration
- Pin compatible with 14-bit versions
- Compact 64-lead QFN package (9mm x 9mm x 0.75mm w/ EP)
Applications
- Communications
- Cellular Basestations
- Software Defined Radios
- Medical Imaging
- High Definition Video
- Testing and Measurement Instruments
Q & A
- What is the sampling rate of the LTC2156-12?
The sampling rate of the LTC2156-12 is 210 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2156-12?
The SNR of the LTC2156-12 is 68.5 dB.
- What is the spurious free dynamic range (SFDR) of the LTC2156-12?
The SFDR of the LTC2156-12 is 90 dB.
- What type of data interface does the LTC2156-12 use?
The LTC2156-12 uses DDR LVDS - Parallel data interface.
- What is the power consumption of the LTC2156-12?
The power consumption of the LTC2156-12 is 592 mW.
- What is the operating temperature range of the LTC2156-12?
The operating temperature range of the LTC2156-12 is 0°C ~ 70°C.
- What type of package does the LTC2156-12 come in?
The LTC2156-12 comes in a 64-lead QFN package (9mm x 9mm x 0.75mm w/ EP).
- Does the LTC2156-12 support simultaneous sampling?
Yes, the LTC2156-12 supports simultaneous sampling.
- What is the input type of the LTC2156-12?
The input type of the LTC2156-12 is differential.
- Is the LTC2156-12 RoHS compliant?
Yes, the LTC2156-12 is RoHS compliant.
