Maxim Integrated MAX138CMH D
- Part Number:
- MAX138CMH D
- Manufacturer:
- Maxim Integrated
- Ventron No:
- 3007251-MAX138CMH D
- Description:
- IC ADC 3.5 DIG W/LCD DVR 44MQFP
- ECAD Model:
-
- Datasheet:
- MAX138CMH D
Description
The MAX138/MAX139 are 3½ digit A/D converters (ADCs) with on-board LCD (MAX138) and LED (MAX139) display drivers. They also contain a charge-pump voltage inverter, allowing them to measure both positive and negative input voltages while operating from a single power-supply voltage from 2.5V to 7V. The operating circuits of the MAX138/MAX139 are similar to those of the ICL7136 and ICL7137 respectively, except the MAX138/MAX139 have an internal oscillator and an external charge-pump capacitor connected to pins 38 and 40.
MAX140 is a low segment-current version of the MAX139 intended for use with low-current LED displays.
Features
Single Supply 2.5V to 7.0V Operation
Measures Both Positive and Negative Input Voltages
Charge-Pump Voltage Inverter Generates a Negative Supply Voltage
Internal Bandgap Reference
On-Board Display Driver
Low Segment Current (MAX140)
Applications
5V Powered Panel Meters
3V Powered DMMs
Instruments
Portable Monitors
Weigh Scales
Digital Thermometers
The MAX138/MAX139 are 3½ digit A/D converters (ADCs) with on-board LCD (MAX138) and LED (MAX139) display drivers. They also contain a charge-pump voltage inverter, allowing them to measure both positive and negative input voltages while operating from a single power-supply voltage from 2.5V to 7V. The operating circuits of the MAX138/MAX139 are similar to those of the ICL7136 and ICL7137 respectively, except the MAX138/MAX139 have an internal oscillator and an external charge-pump capacitor connected to pins 38 and 40.
MAX140 is a low segment-current version of the MAX139 intended for use with low-current LED displays.
Features
Single Supply 2.5V to 7.0V Operation
Measures Both Positive and Negative Input Voltages
Charge-Pump Voltage Inverter Generates a Negative Supply Voltage
Internal Bandgap Reference
On-Board Display Driver
Low Segment Current (MAX140)
Applications
5V Powered Panel Meters
3V Powered DMMs
Instruments
Portable Monitors
Weigh Scales
Digital Thermometers
Maxim Integrated MAX138CMH D technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated MAX138CMH D.
- Factory Lead Time6 Weeks
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / Case44-QFP
- Number of Pins44
- Operating Temperature0°C~70°C
- PackagingTray
- Published2003
- JESD-609 Codee3
- Pbfree Codeyes
- Part StatusActive
- Moisture Sensitivity Level (MSL)3 (168 Hours)
- Number of Terminations44
- ECCN CodeEAR99
- Terminal FinishMatte Tin (Sn)
- Max Power Dissipation889mW
- Voltage - Supply2.5V~7V
- Terminal PositionQUAD
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Supply Voltage5V
- Terminal Pitch0.8mm
- Base Part NumberMAX138
- Pin Count44
- Operating Supply Voltage7V
- Number of Channels2
- InterfaceSerial
- Supply TypeDual
- Number of Analog In Channels1
- Output Bit CodeBINARY
- Number of Converters1
- Voltage Supply SourceSingle Supply
- Resolution (Bits)3.5 Digit
- Radiation HardeningNo
- RoHS StatusROHS3 Compliant
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