LINEAR TECHNOLOGY LTC2498, LTC1859, LTC2600 Technical data

Linear Technology Analog Playground Module

for the Freescale Tower System

Quickly evaluate Linear Technology data converters and other mixed signal solutions with the Freescale Tower System. The
easy-to-use plug-in analog module (TWR-ADCDAC-LTC) expands the capabilities of the Freescale Tower System. It’s a complete
solution with a high precision analog peripheral module controllable by any Freescale Tower processor module with an SPI
interface. The QuikEval™ interface on the analog module allows connection of more than 130 Linear Technology evaluation boards
with the Freescale Tower processor for a broad range of applications.

TWR-ADCDAC-LTC Features

n

Digital-to-Analog Converters (DACs)

n LTC®2704-16: Quad 16-Bit V
n LTC2600: Octal 16-Bit Rail-to-Rail DACs

n

Analog-to-Digital Converters (ADCs)

n LTC1859: 8-Channel, 16-Bit, 100ksps SoftSpan ADC with Shutdown
n LTC2498: 24-Bit 8-/16-Channel ∆∑ ADC with Easy Drive™ Input Current Cancellation

n

Voltage Regulator

SoftSpan™ DAC with Readback

OUT

Applications

n

Data Acquisition

n

Instrumentation

n

Temperature Measurement

n

Industrial Process

n

Medical

n

Weight Scales

n LTC3471: Dual 1.3A, 1.2MHz Boost/Inverter

n

Voltage Reference

n LTC6655-5: 0.25ppm Noise, Low Drift Precision Buffered 5V Reference

n

Four 14-Pin Headers for Connecting to any Linear Technology QuikEval Demonstration Boards

n

Demos/Applications Include:

ADC Data Logger/DAC Waveform Generator

Thermocouple Reader

L, LT, LTC, LTM, Linear Technology and the Linear logo are
registered trademarks and QuikEval, SoftSpan and Easy Drive
are trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners.

LTC2498: 24-Bit, 16-Channel Easy Drive ∆Σ ADC

2.7V TO 5.5V

Temperature

Sensor

REF

–

16-Channel

MUX

REF

+

OSC

24-Bit Easy Drive

ΔΣ ADC

IN

+

IN

–

Fault Protected

Fault Protected

LTC1859

2.7V to 5.5V

VDD = 2.7V to 5.5V V

= 4.5V to ±16.5V

DAC B

DAC B

DAC C

LTC2704

Logic

DAC D

Features

n

8 Differential/16 Single-Ended Input Channels

n

Easy Drive Technology Enables Rail-to-Rail Inputs

with Zero Differential Current

n

Directly Digitizes High Impedance Sensors with

Full Accuracy

n

600nV

n

Internal Temperature Sensor

(2°C Maximum), Internal Oscillator

n

Selectable 50Hz, 60Hz Rejection, Up to 15Hz

Output Rate

RMS

Noise

CH0

CH1

•

•

•

CH7

CH8

•

•

•

CH15

COM

MUXOUT/
ADCIN

MUXOUT/
ADCIN

0.1µF

V

CC

SDI
SCK
SDO

CS

f

O

4-Wire
SPI Interface

10µF

LTC1859: 8-Channel, 16-Bit, 100ksps SoftSpan A/D Converter with Shutdown

25V

10V

5V

0V

–5V

–10V

4 Software-Selected

Input Ranges

5V

4-Wire SPI

Features

n

8-Channel Multiplexer with ±25V Protection

n

Software-Programmable Input Ranges:

0V to 5V, 0V to 10V, ±5V or ±10V, Single-Ended or Differential

n

Power Dissipation: 40mW (Typ)

n

SPI/MICROWIRE Compatible Serial I/O

n

Signal-to-Noise Ratio: 87dB (Typ)

–25V

LTC2600: Octal 16-Bit Rail-to-Rail DACs

Features

n

Guaranteed 16-Bit Monotonic Over Temperature

n

 LowPowerOperation:250μAperDACat3V

n

 IndividualChannelPower-Downto1μA,Max

n

 UltralowCrosstalkBetweenDACs(<10μV)

n

High Rail-to-Rail Output Drive (±15mA, Min)

n

Double-Buffered Digital Inputs

Quad 12-, 14- and 16-Bit Voltage Output SoftSpan DACs with Readback

–1

+
–

+
–

DAC B

ANALOG

16-Bit

DAC

16-Bit

DAC

16-Bit

DAC

16-Bit

DAC

4-Wire

I/O

16-Bit

DAC

16-Bit

DAC

16-Bit

DAC

16-Bit

DAC

LTC2600

SPI/Microwire

Features

n

–1

+
–

+
–

Six Programmable Output Ranges

n

Unipolar: 0V to 5V, 0V to 10V

n

Bipolar: ±5V, ±10V, ±2.5V, –2.5V to 7.5V

n

Serial Readback of All On-Chip Registers

n

1LSB INL and DNL Over the Industrial Temperature

Range (LTC2704-14/LTC2704-12)

n

Force/Sense Outputs Enable Remote Sensing

n

Glitch Impulse: < 2nV per Second

n

Outputs Drive ±5mA

4-Wire SPI

www.linear.com/tower n 1-800-4-LINEAR

0611A