adc150 Rhopoint Components, adc150 Datasheet

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adc150

Manufacturer Part Number
adc150
Description
Programmable Integrating A/d Converter
Manufacturer
Rhopoint Components
Datasheet
THALER CORPORATION. Represented by: Rhopoint Components Ltd. www.rhopointcomponents.com
FEATURES
1 ppm/°C max. scale factor error over the military temperature range. It also has excellent offset stability at
2 ppm max. which the user can auto zero if desired.
ADC150's compatibility with popular microcomputer buses increases its ease of application in smart
systems. An on-board microprocessor controls all internal functions of the ADC150. Thaler designers
have minimized external connections to greatly reduce the problem often encountered when applying
ADC's.
Operating from ±15VDC and a +5VDC power supply, ADC150 is packaged in a hermetically sealed 40-pin
ceramic DIP package. Precision test equipment, scientific and medical instruments, and data acquisition
systems are primary application areas for the unusually high resolution and accuracy of this ADC.
DESCRIPTION
ADC150 is a high performance programmable 24-
bit integrating A/D converter based on a patented
architecture. The integration time and resolution
along with the power line cycle selection can be
easily programmed through the Mode Control
Byte.
ADC150 offers 2 ppm max. linearity error and
• 24 BIT RESOLUTION
• SOFTWARE SELECTABLE FEATURES
• 0.5ppm/°C MAX. SCALE FACTOR ERROR
• 2 ppm MAX. LINEARITY ERROR
• AUTO ZERO
• BUS COMPATIBLE
• INTERNAL CLOCK and REFERENCE
• LOW POWER CONSUMPTION (0.450 WATTS)
ADC150
Programmable
Integrating A/D Converter
ADC150C
ADC150CA
ADC150M
Type
APPLICATIONS
• TEST EQUIPMENT
• DATA ACQUISITION
• SCIENTIFIC INSTRUMENTS
• MEDICAL INSTRUMENTS
• SEISMOLOGICAL EQUIPMENT
• ROBOTIC SYSTEMS
• WEIGHING SYSTEMS
Operating Range
-55°C to +125°C
-25°C to +85°C
-25°C to +85°C
Temperature
Factor Deviation
Max. Scale
ADC150DS REV. F MAR 00
100ppm
60ppm
30ppm

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adc150 Summary of contents

Page 1

... ADC's. Operating from ±15VDC and a +5VDC power supply, ADC150 is packaged in a hermetically sealed 40-pin ceramic DIP package. Precision test equipment, scientific and medical instruments, and data acquisition systems are primary application areas for the unusually high resolution and accuracy of this ADC. ...

Page 2

... The ground connection (pin 7) should be 33 N.C. made as solid as possible since ground noise can result in a loss of accuracy. Use N. ground plane is a good approach to maintain the full accuracy of the ADC150. 31 N.C. 30 N.C. 3. External Components A .68 µF polystyrene integration capacitor AUTO ZERO 29 RESET must be connected to pins 34 and 35 with a N ...

Page 3

... ADC150 Bits µV ppm ppm ppm µVpp ppm dB ppm ppm ppm/month ppm/24 hrs. %, +/- Counts %, +/- Counts %, +/- Counts ms minutes GΩ ADC150DS REV. F MAR 00 ...

Page 4

... I ref inp output, the S When the last pulse is placed in the convert line, the least significant byte is placed in the output buffer and both status flags are high indicating that the ADC150 is ready for another conversion. Status line summary ...

Page 5

... AUTO-ZERO / RESET (Pin 29) A logic zero on this input will autozero the ADC150 by internally connecting the analog high to analog low. Since the µP is reset, the ADC150 reverts to the factory default settings in the EPROM (ie. 22bits, 60Hz, pin 39 analog high). mode different than the default settings, the mode control must be set after auto zero ...

Page 6

... Output Data High Byte Middle Byte 0 Output Data High Byte Middle Byte 0 Output Data High Byte Middle Byte 0 Low Byte Low Byte Low Byte Low Byte ADC150DS REV. F MAR 00 ...

Page 7

... TIMING DIAGRAMS → → t AZD → → Parameter Min. AZ Pulse Width 0.2 Tristate Time AZ Time → t CONZ → t CONV Parameter Min. Typ. Convert Pulse 5.0 Status Delay Convert Time Typ. Max. Unit µ 400 ms Max. Unit µs 8.0 µs 320 ms ADC150DS REV. F MAR 00 ...

Page 8

... SIR Parameter Min. OE Delay Status Delay → → OEDV → t → SIR → t → SL Parameter Min. Status Delay Status Low OE Delay LSB → t SIR Typ. Max. Unit 45 ns 3.0 µs Typ. Max. Unit 8.0 µs 100 ADC150DS REV. F MAR 00 ...

Page 9

... DIM E 1.080 1.100 D 2.075 2.115 A 0.155 0.185 0.220 L 0.240 .100 typ B2 B .018 typ Q .015 .035 C .009 .012 .012 P .018 .890 G1 .910 B1 .040 typ NOTES: 1. GOLD PLATING 60 MICRO INCHES MINIMUM THICKNESS OVER 100 MICRO INCHES NOMINAL THICKNESS OF NICKEL ADC150DS REV. F MAR 00 ...

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