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LTC1857

Features: Sample Rate: 100ksps 8-Channel Multiplexer with ±25V Protection Single 5V Supply Software-Programmable Input Ranges: 0V to 5V, 0V to 10V, ±5V or ±10V Single Ended or Differential ±3LSB INL for the LTC1859, ±1.5LSB INL for the LTC1858, ±1LSB INL for the LTC1857 Power Dissipation: 40mW (T...

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SeekIC No. : 004401922 Detail

LTC1857: Features: Sample Rate: 100ksps 8-Channel Multiplexer with ±25V Protection Single 5V Supply Software-Programmable Input Ranges: 0V to 5V, 0V to 10V, ±5V or ±10V Single Ended or Differential ±3LSB IN...

LTC1857 Data Sheet

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Part Number:
LTC1857
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:

Sample Rate: 100ksps
8-Channel Multiplexer with ±25V Protection
Single 5V Supply
Software-Programmable Input Ranges: 0V to 5V, 0V to 10V, ±5V or ±10V Single Ended or Differential
±3LSB INL for the LTC1859, ±1.5LSB INL for the LTC1858, ±1LSB INL for the LTC1857
Power Dissipation: 40mW (Typ)
SPI/MICROWIRETM Compatible Serial I/O
Power Shutdown: Nap and Sleep
Signal-to-Noise Ratio: 87dB (Typ) for the LTC1859
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 .................................................... ±25V
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
LTC1857C/LTC1858C/LTC1859C ............. 0°C to 70°C
LTC1857I/LTC1858I/LTC1859I ..........  40°C to 85°C
Storage Temperature Range ............65°C to 150°C
Lead Temperature (Soldering, 10 sec) ............. 300°C


Description

The LTC®1857/LTC1858/LTC1859 are 8-channel, low power, 12-/14-/16-bit, 100ksps, analog-to-digital converters (ADCs). These SoftSpanTM ADCs can be softwareprogrammed for 0V to 5V, 0V to 10V, ±5V or ±10V input spans and operate from a single 5V supply. The 8-channel multiplexer can be programmed for single-ended inputs or pairs of differential inputs or combinations of both. In addition, all channels are fault protected to ±25V.

A fault condition on any channel will not affect the conversion result of the selected channel.

An onboard high performance sample-and-hold and precision reference minimize external components. The low 40mW power dissipation is made even more attractive with two user selectable power shutdown modes. DC specifications include ±3LSB INL for the LTC1859, ±1.5LSB INL for the LTC1858 and ±1LSB for the LTC1857.

The internal clock is trimmed for 5µs 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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