Overview
The MAX1121EGK+TD is a high-performance, 8-bit analog-to-digital converter (ADC) designed by Analog Devices Inc./Maxim Integrated. This monolithic ADC is optimized for outstanding dynamic performance at high intermediate frequencies (IF) up to 500MHz. It operates at conversion rates of up to 250 million samples per second (Msps) and is particularly suited for wideband applications such as digital predistortion in cellular base-station transceiver systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Bits | 8 | |
| Sampling Rate | Up to 250 | Msps |
| Power Dissipation | 477 | mW at 250Msps |
| Supply Voltage | 1.8 | V |
| Operating Temperature Range | -40°C to +85°C | |
| Input Type | Differential or Single-Ended | |
| Data Interface | LVDS - Parallel | |
| Architecture | Pipelined | |
| Reference Type | Internal | |
| Package | 68-QFN Exposed Pad (10x10) | |
| Spurious-Free Dynamic Range (SFDR) | 68dBc at fIN = 100MHz | |
| Signal-to-Noise Ratio (SNR) | 48.9dB at 10MHz |
Key Features
- High-speed conversion with rates up to 250Msps
- Single 1.8V supply voltage
- Low power dissipation of 477mW at 250Msps
- On-chip track-and-hold and internal reference
- Selectable on-chip divide-by-2 clock input allowing clock frequencies up to 500MHz
- LVDS digital outputs with data clock output
- Analog input can be differential or single-ended, AC- or DC-coupled
- Excellent dynamic performance with SFDR of 68dBc at 100MHz input frequency
- Flat SNR of 48.9dB for input tones up to 500MHz
Applications
The MAX1121EGK+TD is ideal for various wideband applications, including:
- Digital predistortion in cellular base-station transceiver systems
- High-frequency signal processing in communication systems
- Radar and electronic warfare systems
- High-speed data acquisition systems
Q & A
- What is the maximum sampling rate of the MAX1121EGK+TD?
The maximum sampling rate is up to 250Msps.
- What is the power dissipation of the MAX1121EGK+TD at 250Msps?
The power dissipation is 477mW at 250Msps.
- What type of supply voltage does the MAX1121EGK+TD require?
The MAX1121EGK+TD requires a single 1.8V supply voltage.
- What is the operating temperature range of the MAX1121EGK+TD?
The operating temperature range is -40°C to +85°C.
- What types of analog inputs are supported by the MAX1121EGK+TD?
The MAX1121EGK+TD supports both differential and single-ended analog inputs, which can be AC- or DC-coupled.
- What is the SFDR of the MAX1121EGK+TD at an input frequency of 100MHz?
The SFDR is 68dBc at an input frequency of 100MHz.
- What is the SNR of the MAX1121EGK+TD at 10MHz input frequency?
The SNR is 48.9dB at 10MHz input frequency.
- Does the MAX1121EGK+TD have an on-chip clock divider?
Yes, the MAX1121EGK+TD features a selectable on-chip divide-by-2 clock circuit.
- What type of digital outputs does the MAX1121EGK+TD provide?
The MAX1121EGK+TD provides LVDS digital outputs with a data clock output.
- Is an evaluation kit available for the MAX1121EGK+TD?
Yes, an evaluation kit (MAX1124EVKIT) is available for the MAX1121EGK+TD.
