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AD7091: 1 MSPS, Ultralow Power, 12-Bit ADC in 8-Lead LFCSP Data Sheet (Rev. B)11/6/2012PDF415 kB
Overview
Features and Benefits
- Fast throughput rate: 1 MSPS
- Specified for VDD of 2.09 V to 5.25 V
- INL of ±1 LSB maximum
- Analog input range of 0 V to VDD
- Ultralow power
367 µA typical at 3 V and 1 MSPS
324 nA typical at 3 V in power-down mode - Reference provided by VDD
- Flexible power/throughput rate management
- High speed serial interface:
SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible - Busy indicator
- Power-down mode
- 8-lead, 2 mm × 2 mm LFCSP package
- Temperature range: −40°C to +125°C
Product Details
The AD7091 is a 12-bit successive approximation register analog-to-digital converter (SAR ADC) that offers ultralow power consumption (typically 367 μA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). The AD7091 operates from a single 2.09 V to 5.25 V power supply. The AD7091 also features an on-chip conversion clock and a high speed serial interface.
The conversion process and data acquisition are controlled using a CONVST signal and an internal oscillator. The AD7091 has a serial interface that allows data to be read after the conversion while achieving a 1 MSPS throughput rate. The AD7091 uses advanced design and process techniques to achieve very low power dissipation at high throughput rates.
The reference is derived internally from VDD. This design allows the widest dynamic input range to the ADC; that is, the analog input range for the AD7091 is from 0 V to VDD.
PRODUCT HIGHLIGHTS
- Lowest power 12-bit SAR ADC available.
- High Throughput Rate with Ultralow Power Consumption.
- Flexible Power/Throughput Rate Management.
Average power scales with the throughput rate. Power-down mode allows the average power consumption to be reduced when the device is not performing a conversion. - Reference Derived from the Power Supply.
- Single Supply Operation.
APPLICATIONS
- Battery-powered systems
Handheld meters
Medical instruments
Mobile communications - Instrumentation and control systems
- Data acquisition systems
- Optical sensors
- Diagnostic/monitoring functions
- Energy harvesting
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
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AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)2/14/2015PDF299 kB
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UG-447: Evaluation Board for the AD7091 Analog-to-Digital Converter3/1/2013PDF1236 kB
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The Data Conversion Handbook, 20051/2/2005
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Understanding, Operating, and Interfacing to Integrated Diode-Based RF Detectors11/1/2015
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How to Stay Out of Deep Water when Designing with Bridge Sensors1/1/2014 Analog Dialogue
Software & Systems Requirements
Tools & Simulations
IBIS Models
Product Recommendations
AD7091 Companion Parts
Recommended Driver Amplifiers
- For low frequency and low bias current: ADA4627-1, ADA4637-1, AD8610.
- For high frequency, low noise, low distortion: ADA4899-1, ADA4897-1, AD8021.
- For precision, low power, rail-to-rail output: ADA4841-1, ADA4896-2, AD8031.
Recommended External References for Vdd
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
PCN-PDN Information
Support & Discussions
AD7091 Discussions
RE: Unable to read/write registers on AD7091-R4
2 week(s) ago in Precision ADCs
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.