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AD7298-1: 8-Channel, 1 MSPS, 10-Bit SAR ADC Data Sheet (Rev. A)10/6/2010PDF290 kB
Overview
Features and Benefits
- 10-bit SAR ADC
8 single-ended inputs
Channel sequencer functionality
Fast throughput of 1 MSPS
Analog input range: 0 V to 2.5 V - Temperature range: −40°C to +125°C
- Specified for VDD of 2.8 V to 3.6V
- Logic voltage VDRIVE = 1.65 V to 3.6 V
- Power-down current : <10 μA
- Internal 2.5 V reference
- Internal power-on reset
- High speed serial interface SPI
- 20-lead LFCSP
Product Details
The AD7298-1 is a 10-bit, high speed, low power, 8-channel, successive approximation ADC. The part operates from a single 3.3 V power supply and features throughput rates up to 1 MSPS. The device contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 30 MHz.
The AD7298-1 offers a programmable sequencer, which enables the selection of a preprogrammable sequence of channels for conversion. The device has an on-chip, 2.5 V reference that can be disabled to allow the use of an external reference.
The device offers a 4-wire serial interface compatible with SPI and DSP interface standards.
The AD7298-1 uses advanced design techniques to achieve very low power dissipation at high throughput rates. The part also offers flexible power/throughput rate management options. The part is offered in a 20-lead LFCSP package.
PRODUCT HIGHLIGHTS
- Ideally Suited to Monitoring System Variables in a Variety of Systems. This includes telecommunications, and process and industrial control.
- High Throughput Rate of 1 MSPS with Low Power Consumption.
- Eight Single-Ended Inputs with a Channel Sequencer. A consecutive sequence of channels can be selected on which the ADC cycles and converts.
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.
Documentation & Resources
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AN-742: Frequency Domain Response of Switched-Capacitor ADCs (Rev. C)2/14/2015PDF427 K
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AN-931: Understanding PulSAR ADC Support Circuitry (Rev. 0)2/14/2015PDF299 kB
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The Data Conversion Handbook, 20051/2/2005
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MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design2/14/2015PDF152 kB
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Integrated SAR ADC Family in 4mm x 4mm Package11/10/2011PDF1670 kB
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MT-031: Grounding Data Converters and Solving the Mystery of "AGND" and "DGND"3/20/2009PDF144 kB
Product Recommendations
AD7298-1 Companion Parts
Recommended Driver Amplifiers
- For low frequency and low bias current: ADA4627-1, ADA4637-1, AD8610.
- For high speed and low noise: AD8021, ADA4897-1, ADA4899-1.
- For precision, low noise, low cost, single supply: ADA4841-1, ADA4896-2.
Recommended External Voltage References - 2.5V
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
Sample & Buy
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