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MFG:ADI D/C:09
Part Number: AD7819
MFG: ADI
D/C: 09
Description: The AD7819 is a high speed, microprocessor-compatible, 8-bit analog-to-digital converter with a maximu...
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AD7819
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DataSheet
General Description
AD7819 General Description
The AD7819 is a high speed, microprocessor-compatible, 8-bit analog-to-digital converter with a maximum throughput of 200 kSPS. The converter operates off a single 2.7 V to 5.5 V supply and contains a 4.5 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. Using only address decoding logic the AD7819 is easily mapped into themicroprocessor address space.
When used in its power-down mode, the AD7819 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 AD7819 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 200 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, narrow body, thin shrink small outline package (TSSOP).
AD7819 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
AD7819 Features
`8-Bit ADC with 4.5 s Conversion Time
`On-Chip Track and Hold
`Operating Supply Range: 2.7 V to 5.5 V
`Specifications at 2.7 V 3.6 V and 5 V ± 10%
`8-Bit Parallel Interface
8-Bit Read
`Power Performance
Normal Operation
10.5 mW, VDD = 3 V
Automatic Power-Down
57.75 W @ 1 kSPS, VDD = 3 V
`Analog Input Range: 0 V to VREF
`Reference Input Range: 1.2 V to VDD
AD7819 Connection Diagram
AD7819
PDF/DataSheet Download
- Datasheet: AD7819
- File Size: 167470 KB
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- Click here to Download
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