ISL26134AV28EV1Z Intersil Corporation, ISL26134AV28EV1Z Datasheet

ISL26134AV28EV1Z

Manufacturer Part Number

ISL26134AV28EV1Z

Description

ISL26134 EVAL BOARD 1 - 28 Ld TSSOP

Manufacturer

Intersil Corporation

Datasheet

1.ISL26134AV28EV1Z.pdf (23 pages)

Specifications of ISL26134AV28EV1Z

Pack_quantity

Comm_code

85437090

Lead_time

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Low-Noise 24-bit Delta Sigma ADC

ISL26132, ISL26134

The ISL26132 and ISL26134 are complete analog front ends

for high resolution measurement applications. These 24-bit

Delta-Sigma Analog-to-Digital Converters include a very

low-noise amplifier and are available as either two or four

differential multiplexer inputs. The devices offer the same

pinout as the ADS1232 and ADS1234 devices and are

functionally compatible with these devices. The ISL26132 and

ISL26134 offer improved noise performance at 10Sps and

80Sps conversion rates.

The on-chip low-noise programmable-gain amplifier provides

gains of 1x/2x/64x/128x. The 128x gain setting provides an

input range of ±9.766mVFS when using a 2.5V reference. The

high input impedance allows direct connection of sensors such

as load cell bridges to ensure the specified measurement

accuracy without additional circuitry. The inputs accept signals

100mV outside the supply rails when the device is set for unity

gain.

The Delta-Sigma ADC features a third order modulator

providing up to 21.6-bit noise-free performance.

The device can be operated from an external clock source,

crystal (4.9152MHz typical), or the on-chip oscillator.

The two channel ISL26132 is available in a 24 Ld TSSOP

package and the four channel ISL26134 is available in a 28 Ld

TSSOP package. Both are specified for operation over the

automotive temperature range (-40°C to +105°C).

September 9, 2011

FN6954.1

ISL26134

Only

AIN1+

AIN2+

AIN3+

AIN4+

AIN1-

AIN2-

AIN3-

AIN4-

NOTE for A1/TEMP pin: Functions as A1 on ISL26134; Functions as TEMP on ISL26132

MULTIPLEXER

INPUT

A1/TEMP

AVDD

AGND

GAIN0

PGA

1x/2x/64x/

128x

FIGURE 1. BLOCK DIAGRAM

GAIN1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

CAP

DGND

Features

• Up to 21.6 Noise-free bits.

• Low Noise Amplifier with Gains of 1x/2x/64x/128x

• RMS noise: 10.2nV @ 10Sps (PGA = 128x)

• Linearity Error: 0.0002% FS

• Simultaneous rejection of 50Hz and 60Hz (@ 10Sps)

• Two (ISL26132) or four (ISL26134) channel differential

• On-chip temperature sensor (ISL26132)

• Automatic clock source detection

• Simple interface to read conversions

• +5V Analog, +5 to +2.7V Digital Supplies

• Pb-Free (RoHS Compliant)

• TSSOP packages: ISL26132, 24 pin; ISL26134, 28 pin

Applications

• Weigh Scales

• Temperature Monitors and Controls

• Industrial Process Control

• Pressure Sensors

input multiplexer

All other trademarks mentioned are the property of their respective owners.

VREF+

ADC

INTERNAL

CLOCK

VREF-

OSCILLATOR

EXTERNAL

DVDD

DGND

XTALIN/CLOCK

PWDN

XTALOUT

SCLK

SPEED

SDO/RDY

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