Overview
The LTC2291IUP, produced by Analog Devices Inc., is a dual 12-bit, 25Msps low power analog-to-digital converter (ADC) designed for digitizing high frequency, wide dynamic range signals. This component is part of the LTC2293/LTC2292/LTC2291 family, which offers varying sample rates to suit different application needs. The LTC2291IUP is particularly suited for demanding imaging and communications applications due to its excellent AC performance, including a signal-to-noise ratio (SNR) of 71.3dB and a spurious free dynamic range (SFDR) of 90dB for signals at the Nyquist frequency.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12 | Bits (No Missing Codes) |
| Sample Rate | 25 | Msps |
| Supply Voltage | 2.7V to 3.4V | V |
| Power Consumption | 150mW | mW |
| SNR | 71.3dB | dB |
| SFDR | 90dB | dB |
| Integral Linearity Error (INL) | ±0.3LSB | LSB |
| Differential Linearity Error (DNL) | ±0.15LSB | LSB |
| Analog Input Range | ±0.5V to ±1V | V |
| Package Type | 64-Lead QFN (9mm x 9mm x 0.75mm) | |
| Operating Temperature Range | -40°C to 85°C | °C |
Key Features
- Integrated Dual 12-Bit ADCs
- Single 3V Supply (2.7V to 3.4V) for low power operation
- Optional multiplexer allows both channels to share a digital output bus
- Single-ended CLK input controls converter operation with an optional clock duty cycle stabilizer
- Shutdown and Nap Modes for power management
- Flexible input range: 1V P-P to 2V P-P
- 575MHz Full Power Bandwidth Sample-and-Hold (S/H)
- 110dB Channel Isolation at 100MHz
Applications
The LTC2291IUP is ideal for demanding imaging and communications applications. It is particularly useful in:
- High-frequency signal processing
- Wide dynamic range signal digitization
- Imaging systems requiring high SNR and SFDR
- Communications systems needing low power and high performance ADCs
Q & A
- What is the sample rate of the LTC2291IUP?
The sample rate of the LTC2291IUP is 25Msps.
- What is the resolution of the LTC2291IUP?
The resolution of the LTC2291IUP is 12 bits.
- What is the power consumption of the LTC2291IUP?
The power consumption of the LTC2291IUP is 150mW.
- What is the SNR of the LTC2291IUP?
The SNR of the LTC2291IUP is 71.3dB.
- What is the SFDR of the LTC2291IUP?
The SFDR of the LTC2291IUP is 90dB.
- What is the operating temperature range of the LTC2291IUP?
The operating temperature range of the LTC2291IUP is -40°C to 85°C.
- Does the LTC2291IUP have an optional multiplexer for digital output?
Yes, the LTC2291IUP has an optional multiplexer that allows both channels to share a digital output bus.
- What is the package type of the LTC2291IUP?
The package type of the LTC2291IUP is a 64-Lead QFN (9mm x 9mm x 0.75mm).
- What are the typical applications of the LTC2291IUP?
The LTC2291IUP is typically used in high-frequency signal processing, wide dynamic range signal digitization, imaging systems, and communications systems.
- Does the LTC2291IUP support different logic levels for output?
Yes, the LTC2291IUP allows the outputs to drive 0.5V to 3.6V logic.
