Exar Corporation MP8820
The MP8820 is a precision 1.6 MHz sampling 7-bit plus sign Analog-to-Digital Converter with an eight channel input mux and µP interface. The device has internal circuitry which receives the user supplied reference voltages VREF(+) and VREF(–), and generates the ADC reference voltages VMID (VREF(+) – VREF(–)). The internal ADC reference voltages are capable of swinging to within 0.5 V of the supply rails, giving the MP8820 a wide range over which the effective channel gain can be adjusted.| Part No. | MP8820 |
|---|---|
| Datasheet | MP8820 Download |
| Manufacturer |  Exar Corporation |
| Description | 8-Bit Analog-to-Digital Converter |
| Buy | Stock & Price |
FEATURES
● Precision 7–Bit Plus Sign ADC● 8 Channel Analog Mux
● Single Reference to GND
● Input Referenced to User Supplied VMID
● DNL= ±1/2 LSB, INL=± 1 LSB
● Single Supply: 5 V
● ESD Protection: 2000 V MP8820 8-Bit Analog-to-Digital Converter with an 8-Channel MUX
APPLICATIONS
● Servo Control● Low Cost Audio Control
● Voice Acquisition
GENERAL DESCRIPTION
Since VREF(+) is internally buffered and VREF(–) is generally ground, this structure allows the user to easily generate an input range biased about a user-supplied VMID from a grounded reference source. The MP8820 uses a two-step flash conversion technique. The first section determines the sign and the 3 MSBs while the second segment converts the 4 LSBs. The ADC conversion begins when WR goes low and the data is valid 500 ns after the rising edge of WR. The MP8820 operates from a single 5V supply and consumes only 175mW of power. Specified for operation over the industrial (–40 to +85°C) temperature range, the MP8820 is available in Surface Mount (SOIC) and Shrunk Small Outline (SSOP) packages.
