Features and Benefits
- 10-Bit ADC with 2.3 µs Conversion Time
- Small Footprint 8-Lead microSOIC Package
- Specified Over a –40°C to +105°C Temperature Range
- Inherent Track-and-Hold Functionality
- Operating Supply Range: 2.7 V to 5.5 V
- Specifications at 2.7 V to 5.5 V
- Microcontroller-Compatible Serial Interface
- Optional Automatic Power-Down at End of Conversion
- Low Power Operation:
270 µW at 10 kSPS Throughput Rate
2.7 mW at 100 kSPS Throughput Rate
- Analog Input Range: 0 V to VREF
- Reference Input Range: 0 V to VDD
The AD7810 is a high speed, low power, 10-bit A/D converter that operates from a single 2.7 V to 5.5 V supply. The part contains a 2 µs successive approximation A/D converter, with inherent track/hold functionality, a pseudo differential input and a high speed serial interface that interfaces to most microcontrollers. The AD7810 is fully specified over a temperature range of -40°C to +105°C.
By using a technique that samples the state of the CONVST (convert start) signal at the end of a conversion, the AD7810 may be used in an automatic power-down mode. When used in this mode, the AD7810 automatically powers down at the end of a conversion and "wakes up" at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. The AD7810 can also operate in a high speed mode where the part is not powered down between conversions. In this high speed mode of operation, the conversion time of the AD7810 is 2 µs. The maximum throughput rate is dependent on the speed of the serial interface of the microcontroller.
The part is available in a small 8-pin, 0.3" wide, plastic dual-in-line package (mini-DIP); in an 8-lead, small outline IC (SOIC); and in an 8-lead microSOIC package.
- Complete, 10-Bit ADC in 8-Lead Package
The AD7810 is a 10-bit 2.3 µs ADC with inherent track/hold functionality and a high speed serial interface—all in an 8-lead microSOIC package. VREF may be connected to VDD to eliminate the need for an external reference. The result is a high speed, low power, space saving ADC solution.
- Low Power, Single Supply Operation
The AD7810 operates from a single 2.7 V to 5.5 V supply and typically consumes only 9 mW of power while converting. The power dissipation can be significantly reduced at lower throughput rates by using the automatic power-down mode, e.g., at a throughput rate of 10 kSPS the power consumption is only 270 µW.
- Automatic Power-Down
The automatic power-down mode, whereby the AD7810 powers down at the end of a conversion and “wakes up” before the next conversion, means the AD7810 is ideal for battery powered applications. See Power vs. Throughput Rate section.
- Serial Interface
An easy to use, fast serial interface allows connection to most popular microprocessors with no external circuitry.
- Low Power, Hand-Held Portable Applications that Require Analog-to-Digital Conversion with 10-Bit Accuracy; e.g., Battery Powered Test Equipment, Battery-Powered Communications Systems
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.
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.
Sample & Buy
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