Datasheet

ManualsBrandsLINEAR TECHNOLOGY ManualsDev KitsPCB design board

dc1009af

DEMO MANUAL DC1009A

DESCRIPTION

LTC2492/LTC2488/LTC2486

2-/4-Channel 24-/16-Bit ΔΣ ADC

with Easy Drive Input Current Cancellation

Demonstration circuit 1009A-A features the LTC

2492

2-/4-channel, 24-bit ΔΣADC with Easy Drive™ inputs.

Key DC specifications include 2ppm INL, 1ppm offset,

25ppm full-scale error and 10nV/°C offset drift. In the

6.8Hz/600nV

RMS

mode, input normal mode rejection of

50Hz and 60Hz noise is better than 87dB. The LTC2492 also

includes an internal temperature sensor that is accurate

to 2°C over the operating temperature range.

Demonstration circuit 1009A-B features the LTC2488

2-/4-channel, 16-Bit ADC that is pinout and software

compatible with the LTC2492.

Demonstration circuit 1009A-C features the LTC2486

2-/4-channel 16-Bit ADC that also includes a PGA with

a gain range from 1 to 256 and the same temperature

sensor as the LTC2492.

L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks

and Easy Drive and QuikEval are trademarks of Linear Technology Corporation. All other

trademarks are the property of their respective owners.

BOARD PHOTO

DC1009 is a member of Linear Technology‘s QuikEval™

family of demonstration boards. It is designed to allow easy

evaluation of the LTC2492, LTC2488 or LTC2486. DC1009

may be connected directly to the target application’s ana-

log signals while using the DC590 USB serial controller

board and supplied software to measure performance.

After evaluating with LTC’s software, the digital signals can

be connected to the application’s processor/controller for

development of the serial interface.

Design files for this circuit board are available at

http://www.linear.com/demo

RIBBON CABLE

TO DC590

COM BIAS

OR TIE TO GROUND

SINGLE-ENDED

SIGNALS

DIFFERENTIAL SIGNALS

(OBSERVE COMMON

MODE LIMITATIONS)

REFERENCE MONITOR

(OR EXTERNAL SOURCE:

SEE HARDWARE SET-UP)

–

Summary of content (6 pages)

PAGE 1
DEMO MANUAL DC1009A LTC2492/LTC2488/LTC2486 2-/4-Channel 24-/16-Bit ΔΣ ADC with Easy Drive Input Current Cancellation DESCRIPTION Demonstration circuit 1009A-A features the LTC®2492 2-/4-channel, 24-bit ΔΣADC with Easy Drive™ inputs. Key DC specifications include 2ppm INL, 1ppm offset, 25ppm full-scale error and 10nV/°C offset drift. In the 6.8Hz/600nVRMS mode, input normal mode rejection of 50Hz and 60Hz noise is better than 87dB.
PAGE 2
DEMO MANUAL DC1009A QUICK START PROCEDURE Connect the DC1009 to a DC590 USB serial controller using the supplied 14 conductor ribbon cable. Connect DC590 to the host PC with a standard USB A/B cable. Run the evaluation software supplied with DC590 or downloaded from www.linear.com/software. The correct program will be loaded automatically. Click the collect button to start reading the input voltage.
PAGE 3
DEMO MANUAL DC1009A HARDWARE SETUP Jumpers JP1, JP2: Select the source for REF+ and REF–, respectively. REF+ can be 5.00V from the onboard LT1236 reference (default) or supplied externally. REF – can be ground (0V, default) or supplied externally. Connection To DC590 Serial Controller J2 is the power and digital interface connector. Connect to a DC590 serial controller with the supplied 14-conductor ribbon cable. Digital signals are also connected to throughhole test points on the circuit board.
PAGE 4
DEMO MANUAL DC1009A PARTS LIST ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER Required Circuit Components 1 3 C1, C2, C6 CAP., X7R 0.1μF 16V, 0603 AVX, 0603YC104MAT1A 2 1 C3 CAP., X5R 4.7μF 6.3V, 20%, 0805 TAIYO YUDEN, JMK212BJ475MGT 3 1 C4 CAP., X5R, 10μF 6.3V, 20%, 0805 TDK, C2012X5R0J106M 4 1 C5 CAP., X7R 0.01μF 16V, 10%, 0603 AVX, 0603YC103KAT1A 5 12 E1-E12 TESTPOINT, TURRET, .064” MILL-MAX, 2308-2 6 2 JP1, JP2 JMP, 3-PIN 1 ROW .
PAGE 5
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. A B C E12 E11 E10 E7 E6 E5 E2 -A -B -C BITS 24 16 16/PGA CH3 EXT CH1 CH0 REF- REF+ CH2 JP2 REF- LTC2492CDE LTC2488CDE LTC2486CDE 5 4 1. ALL RESISTORS ARE IN OHMS, 0603.
PAGE 6
DEMO MANUAL DC1009A DEMONSTRATION BOARD IMPORTANT NOTICE Linear Technology Corporation (LTC) provides the enclosed product(s) under the following AS IS conditions: This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use.