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MFG:ADI D/C:09
Part Number: AD7813
MFG: ADI
D/C: 09
Description: The AD7813 is a high-speed, microprocessor-compatible, 8-/10-bit analog-to-digital converter with a ma...
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AD7813
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DataSheet
General Description
AD7813 General Description
The AD7813 is a high-speed, microprocessor-compatible, 8-/10-bit analog-to-digital converter with a maximum throughput of 400 kSPS. The converter operates off a single 2.7 V to 5.5 V supply and contains a 2.3 s successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. The 10-bit conversion result is read by carrying out two 8-bit read operations. The first read operation accesses the 8 MSBs of the ADC conversion result and the second read accesses the 2 LSBs. Using only address decoding logic the AD7813 is easily mapped into the microprocessor address space.
When used in its power-down mode, the AD7813 automatically powers down at the end of a conversion and powers up at the start of a new conversion. This feature significantly reduces the power consumption of the part at lower throughput rates. The AD7813 can also operate in a high speed mode where the part is not powered down between conversions. In this mode of operation the part is capable of providing 400 kSPS throughput.
The part is available in a small, 16-lead, 0.3" wide, plastic dualin-line package (DIP), in a 16-lead, 0.15" wide, narrow body small outline IC (SOIC) and in a 16-lead thin shrink small outline package (TSSOP).
AD7813 Maximum Ratings
VDD to DGND . . . . . . . . . . . . . . . . . . .. . . . . 0.3 V to +7 V
Digital Input Voltage to DGND
(CONVST, RD, CS) . . . . . . . . . . . .. . 0.3 V, VDD + 0.3 V
Digital Output Voltage to DGND
(BUSY, DB0DB7) . . . . . . . . . . . .. . 0.3 V, VDD + 0.3 V
REFIN to AGND . . . . . . . . . . . . . . . . . . . 0.3 V, VDD + 0.3 V
Analog Input . . . . . . . . . . . . . . . . . .. . . 0.3 V, VDD + 0.3 V
Storage Temperature Range . . . . . . .. . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Plastic DIP Package, Power Dissipation . . . . . . .. . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . .. . . . 105°C/W
Lead Temperature, (Soldering 10 sec) . . .. . . . . . 260°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 75°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
SSOP Package, Power Dissipation . . . . . . . . . . . . . .. .450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . .115°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . .. . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
AD7813 Features
`8-/10-Bit ADC with 2.3 s Conversion Time
`On-Chip Track and Hold
`Operating Supply Range: 2.7 V to 5.5 V
`Specifications at 2.7 V3.6 V and 5 V 10%
`8-Bit Parallel Interface
8-Bit + 2-Bit Read
`Power Performance
Normal Operation
10.5 mW, VDD = 3 V
Automatic Power-Down
34.6 W @ 1 kSPS, VDD = 3 V
`Analog Input Range: 0 V to VREF
`Reference Input Range: 1.2 V to VDD
AD7813
PDF/DataSheet Download
- Datasheet: AD7813
- File Size: 202642 KB
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