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MFG:ADI D/C:09
Part Number: AD7858L
MFG: ADI
D/C: 09
Description: The AD7858/AD7858L are high-speed, low-power, 12-bit ADCs that operate from a single 3 V or 5 V power ...
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AD7858L
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DataSheet
General Description
AD7858L General Description
The AD7858/AD7858L are high-speed, low-power, 12-bit ADCs that operate from a single 3 V or 5 V power supply, the AD7858 being optimized for speed and the AD7858L for low power. The ADC powers up with a set of default conditions at which time it can be operated as a read-only ADC. The ADC contains self-calibration and system calibration options to ensure accurate operation over time and temperature and have a number of power-down options for low-power applications. The part powers up with a set of default conditions and can operate as a read-only ADC.
The AD7858 is capable of 200 kHz throughput rate while the AD7858L is capable of 100 kHz throughput rate. The input track-and-hold acquires a signal in 500 ns and features a pseudo-differential sampling scheme. The AD7858/AD7858L voltage range is 0 to VREF with straight binary output coding. Input signal range is to the supply and the part is capable of converting full power signals to 100 kHz.
CMOS construction ensures low power dissipation of typically 4.5 mW for normal operation and 1.15 mW in power-down mode with a throughput rate of 10 kSPS (VDD = 3 V). The part is available in 24-lead, 0.3 inch-wide dual-in-line package (DIP), 24-lead small outline (SOIC), and 24-lead small shrink outline (SSOP) packages.
AD7858L Maximum Ratings
(TA = +25 unless otherwise noted)
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.3 V
Analog Input Voltage to AGND . . . . 0.3 V to AVDD + 0.3 V
Digital Input Voltage to DGND . . .. . 0.3 V to DVDD + 0.3 V
Digital Output Voltage to DGND . .. . 0.3 V to DVDD + 0.3 V
REFIN/REFOUT to AGND . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies2 . . . . . . ±10 mA
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . .. . . 40 to +85
Storage Temperature Range . . . . . . . . . . . 65 to +150
Junction Temperature . . . . . . . . . . . . . . . . .. . .. . . . . +150
Plastic DIP Package, Power Dissipation . . . . . .. . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . .. . . 105/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 34.7/W
Lead Temperature, (Soldering, 10 sec) . . . . . .. . . . . +260
SOIC, SSOP Package, Power Dissipation . . . . . . . . 450 mW
JA Thermal Impedance . . . 75/W (SOIC) 115/W (SSOP)
JC Thermal Impedance . . . . 25/W (SOIC) 35/W (SSOP)
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215
Infrared (15 sec) . . . . . . . . . . . . . . . . .. . . . . . . . . . . +220
AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +7 V
AVDD to DVDD . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.3 V
Analog Input Voltage to AGND . . . . 0.3 V to AVDD + 0.3 V
Digital Input Voltage to DGND . . .. . 0.3 V to DVDD + 0.3 V
Digital Output Voltage to DGND . .. . 0.3 V to DVDD + 0.3 V
REFIN/REFOUT to AGND . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Input Current to Any Pin Except Supplies2 . . . . . . ±10 mA
Operating Temperature Range
Commercial (A, B Versions) . . . . . . . . . . .. . . 40 to +85
Storage Temperature Range . . . . . . . . . . . 65 to +150
Junction Temperature . . . . . . . . . . . . . . . . .. . .. . . . . +150
Plastic DIP Package, Power Dissipation . . . . . .. . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . .. . . 105/W
JC Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 34.7/W
Lead Temperature, (Soldering, 10 sec) . . . . . .. . . . . +260
SOIC, SSOP Package, Power Dissipation . . . . . . . . 450 mW
JA Thermal Impedance . . . 75/W (SOIC) 115/W (SSOP)
JC Thermal Impedance . . . . 25/W (SOIC) 35/W (SSOP)
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . +215
Infrared (15 sec) . . . . . . . . . . . . . . . . .. . . . . . . . . . . +220
AD7858L Features
Specified for VDD of 3 V to 5.5 V
AD7858-200 kSPS; AD7858L-100 kSPS
System and Self-Calibration with Autocalibration on Power-Up
Eight Single-Ended or Four Pseudo-Differential Inputs Low Power
AD7858: 12 mW (VDD = 3 V)
AD7858L: 4.5 mW (VDD = 3 V)
Automatic Power-Down After Conversion (25 W)
Flexible Serial Interface:
8051/SPI™/QSPI™/P Compatible
24-Lead DIP, SOIC, and SSOP Packages
AD7858-200 kSPS; AD7858L-100 kSPS
System and Self-Calibration with Autocalibration on Power-Up
Eight Single-Ended or Four Pseudo-Differential Inputs Low Power
AD7858: 12 mW (VDD = 3 V)
AD7858L: 4.5 mW (VDD = 3 V)
Automatic Power-Down After Conversion (25 W)
Flexible Serial Interface:
8051/SPI™/QSPI™/P Compatible
24-Lead DIP, SOIC, and SSOP Packages
AD7858L Typical Application
Battery-Powered Systems (Personal Digital Assistants, Medical Instruments, Mobile Communications)
Pen Computers
Instrumentation and Control Systems
High-Speed Modems
Pen Computers
Instrumentation and Control Systems
High-Speed Modems
AD7858L Connection Diagram
AD7858L
PDF/DataSheet Download
- Datasheet: AD7858L
- File Size: 322641 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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