Purchase AD7823, In-stock AD7823 From SeekIC.
MFG:ADI D/C:09
Part Number: AD7823
MFG: ADI
D/C: 09
Description: The AD7823 is a high speed, low power, 8-bit A/D converter that operates from a single 2.7 V to 5.5 V ...
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AD7823
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DataSheet
General Description
AD7823 General Description
The AD7823 is a high speed, low power, 8-bit A/D converter that operates from a single 2.7 V to 5.5 V supply. The part contains a 4 s typ successive approximation A/D converter, inherent track-and-hold functionality (with a pseudo differential input) and a high speed serial interface that interfaces to most microcontrollers. The AD7823 is fully specified over a temperature range of 40°C to +125°C.
By using a technique that samples the state of the CONVST (convert start) signal at the end of a conversion, the AD7823 may be used in an automatic power-down mode. When used in this mode, the AD7823 powers down automatically 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 AD7823 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 AD7823 is 4 s typ. The maximum throughput rate is dependent on the speed of the serial interface of the microcontroller.
The part is available in a small, 8-lead 0.3" wide, plastic dualin- line package (mini-DIP); in an 8-lead, small outline IC (SOIC); and in an 8-lead microSOIC package.
AD7823 Maximum Ratings
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
Digital Input Voltage to GND
(CONVST, SCLK) . . . . . . . . . . . . . . .......0.3 V, VDD + 0.3 V
Digital Output Voltage to GND
(DOUT) . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V, VDD + 0.3 V
VREF to GND . . . . . . . . . . . . . . . . . . . . 0.3 V, VDD + 0.3 V
Analog Inputs
(VIN +, VIN ) . . . . . . . . . . . . . . . . . . . .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 . . . . . . . . . . . . . . . . . . +125°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . +50°C/W
Lead Temperature, Soldering (10 sec) . . . . . . . . . +260°C
SOIC Package, Power Dissipation . . . . . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 160°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . 56°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . ..+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C
MicroSOIC Package, Power Dissipation . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 206°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . 44°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . ..+220°C
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Digital Input Voltage to GND
(CONVST, SCLK) . . . . . . . . . . . . . . .......0.3 V, VDD + 0.3 V
Digital Output Voltage to GND
(DOUT) . . . . . . . . . . . . . . . . . . . . . . . . .0.3 V, VDD + 0.3 V
VREF to GND . . . . . . . . . . . . . . . . . . . . 0.3 V, VDD + 0.3 V
Analog Inputs
(VIN +, VIN ) . . . . . . . . . . . . . . . . . . . .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 . . . . . . . . . . . . . . . . . . +125°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . +50°C/W
Lead Temperature, Soldering (10 sec) . . . . . . . . . +260°C
SOIC Package, Power Dissipation . . . . . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 160°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . 56°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . ..+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . .+220°C
MicroSOIC Package, Power Dissipation . . . . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . 206°C/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . 44°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . .+215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . ..+220°C
*Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
AD7823 Features
` 8-Bit ADC with 4 s Conversion Time
` Small Footprint 8-Lead microSOIC Package
` Specified Over a 40C to +125C 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 and 5 V ± 10%
` Microcontroller Compatible Serial Interface
` Optional Automatic Power-Down
` Low Power Operation:
570 W at 10 kSPS Throughput Rate
2.9 mW at 50 kSPS Throughput Rate
` Analog Input Range: 0 V to VREF
` Reference Input Range: 0 V to VDD
` "Drop In" Upgrade to 10 Bits Available (AD7810)
` Small Footprint 8-Lead microSOIC Package
` Specified Over a 40C to +125C 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 and 5 V ± 10%
` Microcontroller Compatible Serial Interface
` Optional Automatic Power-Down
` Low Power Operation:
570 W at 10 kSPS Throughput Rate
2.9 mW at 50 kSPS Throughput Rate
` Analog Input Range: 0 V to VREF
` Reference Input Range: 0 V to VDD
` "Drop In" Upgrade to 10 Bits Available (AD7810)
AD7823 Typical Application
·Low Power, Hand-Held Portable Applications
·Requiring Analog-to-Digital Conversion
·with 8-Bit Accuracy, e.g.,
· Battery Powered Test Equipmen
· Battery Powered Communications Systems
·Requiring Analog-to-Digital Conversion
·with 8-Bit Accuracy, e.g.,
· Battery Powered Test Equipmen
· Battery Powered Communications Systems
AD7823 Connection Diagram
AD7823
PDF/DataSheet Download
- Datasheet: AD7823
- File Size: 168697 KB
- Manufacturer:
- Click here to Download
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