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LTC1855

Features: Single 5V Supply Sample Rate: 100ksps 8-Channel Multiplexer with ±30V Protection ±10V Bipolar Input Range Single Ended or Differential ±3LSB INL for the LTC1856, ±1.5LSB INL for the LTC1855, ±1LSB INL for the LTC1854 Power Dissipation: 40mW (Typ) SPI/MICROWIRETM Compatible Serial I/O Po...

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SeekIC No. : 004401920 Detail

LTC1855: Features: Single 5V Supply Sample Rate: 100ksps 8-Channel Multiplexer with ±30V Protection ±10V Bipolar Input Range Single Ended or Differential ±3LSB INL for the LTC1856, ±1.5LSB INL for the LTC18...

LTC1855 Data Sheet

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Part Number:
LTC1855
Supply Ability:
5000

Price Break

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

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Product Details

Description



Features:

Single 5V Supply
Sample Rate: 100ksps
8-Channel Multiplexer with ±30V Protection
±10V Bipolar Input Range Single Ended or Differential
±3LSB INL for the LTC1856, ±1.5LSB INL for the LTC1855, ±1LSB INL for the LTC1854
Power Dissipation: 40mW (Typ)
SPI/MICROWIRETM Compatible Serial I/O
Power Shutdown: Nap and Sleep
SINAD: 87dB (LTC1856)
Operates with Internal or External Reference
Internal Synchronized Clock
28-Pin SSOP Package


Application

Industrial Process Control
Multiplexed Data Acquisition Systems
High Speed Data Acquisition for PCs
Digital Signal Processing


Pinout

Connection Diagram


Specifications

Supply Voltage (OVDD = DVDD = AVDD = VDD) ............ 6V
Ground Voltage Difference
DGND, AGND1, AGND2, AGND3 .............................. ±0.3V
Analog Input Voltage
ADC+, ADC
(Note 3) .......................(AGND1 0.3V) to (AVDD + 0.3V)
CH0-CH7, COM ...................................................... ±30V
Digital Input Voltage (Note 4) ...... (DGND 0.3V) to 10V
Digital Output Voltage ..(DGND 0.3V) to (DVDD + 0.3V)
Power Dissipation ............................................. 500mW
Operating Temperature Range
LTC1854C/LTC1855C/LTC1856C ................. 0 to 70
LTC1854I/LTC1855I/LTC1856I ................ 40 to 85
Storage Temperature Range ................. 65 to 150
Lead Temperature (Soldering, 10 sec) ................ 300


Description

The LTC®1854/LTC1855/LTC1856 are 8-channel, low power, 12-/14-/16-bit, 100ksps, analog-to-digital converters (ADCs). These ADCs operate from a single 5V supply and the 8-channel multiplexer can be programmed for single-ended inputs, pairs of differential inputs, or combinations of both. In addition, all channels are fault protected to ±30V.

A fault condition on any channel will not affect the conversion result of the selected channel. An onboard precision reference minimizes external components. Power dissipation is 40mW at 100ksps and lower in two power shutdown modes (27.5mW in Nap mode and 40mW in Sleep mode.) DC specifications include ±3LSB INL for the LTC1856, ±1.5LSB INL for the LTC1855 and ±1LSB for the LTC1854.

The internal clock is trimmed for 5ms maximum conversion time and the sampling rate is guaranteed at 100ksps. A separate convert start input and data ready signal (BUSY) ease connections to FIFOs, DSPs and microprocessors.




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