LM12L458

Features: `Three operating modes: 12-bit + sign, 8-bit + sign, and watchdog `Single-ended or differential inputs`Built-in Sample-and-Hold`Instruction RAM and event sequencer`8-channel multiplexer`32-word conversion FIFO`Programmable acquisition times and conversion rates`Self-calibration and diag...

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LM12L458 Picture
SeekIC No. : 004394625 Detail

LM12L458: Features: `Three operating modes: 12-bit + sign, 8-bit + sign, and watchdog `Single-ended or differential inputs`Built-in Sample-and-Hold`Instruction RAM and event sequencer`8-channel multiplexer`3...

floor Price/Ceiling Price

Part Number:
LM12L458
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

`Three operating modes: 12-bit + sign, 8-bit + sign, and "watchdog"
`Single-ended or differential inputs
`Built-in Sample-and-Hold
`Instruction RAM and event sequencer
`8-channel multiplexer
`32-word conversion FIFO
`Programmable acquisition times and conversion rates
`Self-calibration and diagnostic mode
`8- or 16-bit wide databus microprocessor or DSP interface
`CMOS compatible I/O





Application

·Data Logging
·Process Control
·Energy Management
·Medical Instrumentation





Pinout

  Connection Diagram




Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VA+ and VD+).............................. 6.0V
Voltage at Input and Output Pins
except IN0IN7 (LM12L458) .........−0.3V to V+ + 0.3V
Voltage at Analog Inputs
IN0IN7 (LM12L458) GND.................. − 5V to V+ + 5V
|VA+ − VD+| .....................................................300 mV
Input Current at Any Pin (Note 3)..................... ±5 mA
Package Input Current (Note 3) ......................±20 mA
Power Dissipation (TA = 25°C)
V Package (Note 4) ..........................................875 mW
Storage Temperature..................... −65°C to +150°C
Lead Temperature
V Package, Infrared, 15 sec. ...........................+300°C
ESD Susceptibility (Note 5) ..................................1.5 kV
See AN-450 "Surface Mounting Methods and Their Effect
on Product Reliability" for other methods of soldering
surface mount devices.


Resolution 12 bits
Input Channels 8
Interface Type Parallel
Differential Input Yes
INL (LSB) +/-1.0
Max KSample Rate 114 ksps
Min Supply Voltage 3 Volt
Max Supply Voltage 3.6 Volt
Reference Source Internal
Temperature Min -40 deg C
Temperature Max 85 deg C
Power Down Yes
Input Sample/Hold Yes
Special Features Undefined
Data Converter Type ADC
Max Sample Rate 0.114 MSPS
View Using Catalog





Description

The LM12L458 is a highly integrated 3.3V Data Acquisition System. It combines a fully-differential self-calibrating (correcting linearity and zero errors) 13-bit (12-bit + sign) analog-to-digital converter (ADC) and sample-and-hold (S/H) with extensive analog functions and digital functionality. Up to 32 consecutive conversions, using two's complement format, can be stored in an internal 32-word (16-bit wide) FIFO data buffer. An internal 8-word RAM can store the conversion sequence for up to eight acquisitions through the LM12L458's eight-input multiplexer. The LM12L458 can also operate with 8-bit + sign resolution and in a supervisory "watchdog" mode that compares an input signal against two programmable limits. Programmable acquisition times and conversion rates are possible through the use of internal clock-driven timers.

All registers, RAM, and FIFO are directly addressable through the high speed microprocessor interface to either an 8-bit or 16-bit databus. The LM12L458 includes a direct memory access (DMA) interface for high-speed conversion data transfer.






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