Overview
The MAX1191ETI+T, produced by Analog Devices Inc./Maxim Integrated, is an ultra-low-power, dual, 8-bit, 7.5Msps analog-to-digital converter (ADC). This device is designed to offer excellent dynamic performance and low power consumption, making it ideal for various applications in imaging, instrumentation, and digital communications. The MAX1191 features two fully differential wideband track-and-hold (T/H) inputs with a 440MHz bandwidth, capable of accepting fully differential or single-ended signals. It operates from a 2.7V to 3.6V analog power supply and a separate 1.8V to 3.6V supply for the digital output driver.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Number of Converters | 2 | |
| Number of Bits | 8 | |
| Sampling Rate | 7.5 Msps | |
| Analog Supply Voltage | 2.7V to 3.6V | |
| Digital Output Supply Voltage | 1.8V to 3.6V | |
| Input Bandwidth | 440 MHz | |
| Signal-to-Noise Ratio (SNR) | 48.7 dB at fIN = 1.875 MHz | |
| Signal-to-Noise and Distortion (SINAD) | 48.6 dB at fIN = 1.875 MHz | |
| Power Consumption (Normal Operation) | 12 mW | |
| Power Consumption (Shutdown Mode) | 0.3 µW | |
| Package Type | 28-Pin Thin QFN (5mm x 5mm) | |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- Ultra-Low Power: Consumes only 12mW during normal operation and 0.3µW in shutdown mode.
- Excellent Dynamic Performance: Offers 48.7dB SNR and 48.6dB SINAD at an input frequency of 1.875MHz.
- Fully Differential or Single-Ended Inputs: Accepts both fully differential and single-ended analog input signals.
- Internal/External Reference Option: Allows the use of an internal 1.024V precision bandgap reference or an externally applied reference.
- Multiplexed CMOS-Compatible Tri-State Outputs: Provides parallel, multiplexed outputs with offset binary format.
- Three Power-Down Modes: Includes normal, idle, and shutdown modes to conserve power during idle periods.
- Compact Package: Available in a 28-pin thin QFN package (5mm x 5mm).
Applications
- Battery-Powered Portable Instruments: Ideal for devices requiring low power consumption.
- IQ Baseband Sampling: Suitable for digital communication systems.
- Low-Power Video: Used in video applications where power efficiency is crucial.
- Ultrasound and Medical Imaging: Applies to medical imaging and diagnostic equipment.
- WLAN, Mobile DSL, WLL Receiver: Used in wireless and wired communication systems.
Q & A
- What is the sampling rate of the MAX1191ETI+T ADC?
The MAX1191ETI+T has a sampling rate of 7.5 Msps.
- What is the power consumption of the MAX1191ETI+T during normal operation?
The device consumes 12 mW during normal operation.
- What types of analog input signals can the MAX1191ETI+T accept?
The MAX1191ETI+T can accept both fully differential and single-ended analog input signals.
- What is the operating temperature range of the MAX1191ETI+T?
The operating temperature range is -40°C to +85°C.
- What package type is the MAX1191ETI+T available in?
The device is available in a 28-pin thin QFN package (5mm x 5mm).
- Does the MAX1191ETI+T have an internal reference option?
Yes, it has an internal 1.024V precision bandgap reference, and it also allows for an externally applied reference.
- What are the power-down modes available in the MAX1191ETI+T?
The device features normal, idle, and shutdown power-down modes.
- What is the signal-to-noise ratio (SNR) of the MAX1191ETI+T at 1.875 MHz input frequency?
The SNR is 48.7 dB at an input frequency of 1.875 MHz.
- Is the MAX1191ETI+T suitable for battery-powered devices?
Yes, it is suitable due to its ultra-low power consumption.
- What are some common applications of the MAX1191ETI+T?
Common applications include battery-powered portable instruments, IQ baseband sampling, low-power video, ultrasound and medical imaging, and WLAN, mobile DSL, WLL receivers.
