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Datasheet Linear Technology LTC2357ILX-18#PBF

ManufacturerLinear Technology
SeriesLTC2357-18
Part NumberLTC2357ILX-18#PBF

Buffered Quad, 18-Bit, 350ksps/Ch Differential 10.24V ADC with 30VP-P Common Mode Range

Datasheets

  • Download » Datasheet, PDF, 2.7 Mb, File uploaded 11-17-2017
    LTC2357-18 - Buffered Quad, 18-Bit, 350ksps/Ch Differential 10.24V ADC with 30VP-P Common Mode Range
    Docket ↓
    LTC2357-18
    Buffered Quad, 18-Bit, 350ksps/Ch
    Differential ±10.24V ADC with
    30VP-P Common Mode Range
    DESCRIPTION FEATURES Simultaneous Sampling of 4 Buffered Channels
    nn 350ksps per Channel Throughput
    nn 500pA/12nA Max Input Leakage at 85°C/125°C
    nn ±3.5LSB INL (Maximum, ±10.24V Range)
    nn Guaranteed 18-Bit, No Missing Codes
    nn Differential, Wide Common Mode Range Inputs
    nn Per-Channel SoftSpan Input Ranges:
    nn ±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V
    nn ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
    nn 96.4dB Single-Conversion SNR (Typical)
    nn -110dB THD (Typical) at f = 2kHz
    IN
    nn 128dB CMRR (Typical) at f = 200Hz
    IN
    nn Rail-to-Rail Input Overdrive Tolerance
    nn Integrated Reference and Buffer (4.096V)
    nn SPI CMOS (1.8V to 5V) and LVDS Serial I/O
    nn Internal Conversion Clock, No Cycle Latency
    nn 175mW Power Dissipation (44mW/Ch Typical) ...

Prices

Packaging

Package7mm x 7mm LQFP-48
Package CodeLX
Package Index05-08-1760

Parametrics

ADC INL1 LSB
ADCs1
ArchitectureSAR
Bipolar/Unipolar InputBipolar, Unipolar
Bits18 bits
Number of Channels4
DNL0.2 LSB
Demo BoardsDC2365A-B
Export Controlno
FeaturesSimultaneous Sampling, Buffered Inputs
I/OSerial SPI, Serial LVDS
Input DriveDifferential, Single Ended
Input Span±10.24V, 0V to 10.24V, ±5.12V, 0V to 5.12V, ±12.5V, 0V to 12.5V, ±6.25V, 0V to 6.25V
Internal Referenceyes
Operating Temperature Range-40 to 85 °C
Power174 mW
SFDR112 dB
SINAD96.2 dB
SNR96.4 dB
Simultaneousyes
Speed350 ksps
Supply Voltage Range5V
THD dB-110 dB

Eco Plan

RoHSCompliant

Application Notes

  • Download » Application Notes - AN167, PDF, 1.3 Mb, 09-20-2017
    Buffered ADC Family Eliminates Signal Conditioning Complexity
    Docket ↓
    Application Note 167
    September 2017
    Buffered ADC Family Eliminates
    Signal Conditioning Complexity
    Joe Sousa, Andrew Thomas, Clement Wagner, Mark Thoren
    Engineers often assume that analog-to-digital converter
    inputs are high impedance. Direct-sampling SAR ADC
    inputs will often be high impedance when not converting, but will draw “spikes” of current at the beginning
    of sample acquisition. On average, this behavior can be
    modeled as a crude nonlinear resistance that is inversely
    proportional to the sample capacitor size and sample rate,
    but instantaneously the signal chain must be able to settle
    completely in response to this abuse before acquisition
    ends and a conversion begins. Coupling a signal chain to an ADC is an art form, often requiring a combination of theory
    and experimentation. By contrast, the LTC2358 family of
    multi-channel, buffered high voltage SAR ADCs offers
    truly high impedance inputs that simplify or eliminate the
    need for signal conditioning in many cases. When signal
    conditioning is required, it can be directly connected to
    the LTC2358 inputs without regard to its ability to drive
    a switched capacitor. The following circuits show some
    applications that take advantage of the properties of the
    LTC2358 inputs. ...

Moldel Line

Series: LTC2357-18 (3)

Manufacturer's Classification

  • Data Conversion > Analog-to-Digital Converters (ADC) > Precision ADCs (Fs < 10Msps) > Simultaneous Sampling ADCs

Other Names:

LTC2357ILX-18PBF, LTC2357ILX-18 PBF, LTC2357ILX18#PBF, LTC2357ILX 18#PBF

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