ADC1131K INTRONICS, ADC1131K Datasheet

ADC1131K

Manufacturer Part Number

ADC1131K

Description

IC, ADC, 14BIT, MODULE-72

Manufacturer

INTRONICS

Datasheet

1.ADC1130.pdf (1 pages)

Specifications of ADC1131K

Resolution (bits)

14bit

Data Interface

Parallel, Serial

Supply Current

250mA

Digital Ic Case Style

Module

No. Of Pins

Operating Temperature Range

0Â°C To +70Â°C

Supply Voltage Min

Inl Â±

0.5LSB

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0" and another comparison is made. This process continues through

ach successive bit until the BIT 14 (LSB) comparison is completed.

GENERAL DESCRIPTION

The ADC11130 and ADCI 131 are high speed analog-to-digital

converters packaged in a small 2" x 4" x 0.4" (51 x 102 x 10mm)

module, which perform complete 14-bit conversions in 25 s and 12 s

respectively. Using the successive approximations technique, they

convert analog input voltages into natural binary, offset binary, or two’s

complement coded outputs. Data outputs are provided in both parallel

and non-return-to-zero serial form.

Four analog input ranges are available: 0V to +20V, 0V to +10V, ±10V,

and ±5V. The user selects the desired range by making appropriate

connections to the module terminals. The ADC1130 and ADC1131 can

also be connected so as to perform conversions of less than 14 bit

resolution with a proportionate decrease in conversion time.

TIMING

As shown in Figure 1, the leading edge of the convert command set the

MSB output to Logic "0" and the CLOCK OUT, STATUS, MSB, and

BIT 2 through BIT 12 outputs to Logic "1". Nothing further happens

until the convert command returns to Logic "0", at which time the clock

starts to run and the conversion proceeds.

With the MSB in the Logic "0" state, the internal digital-to-analog

converter's output is compared with the analog input. If the D/A

output is less than the analog input, the first "0" to "1" clock

transition resets the MSB to Logic "1". If the D/A output is

greater than the analog input, the MSB remains at Logic "0”.

The first "0" to "1" clock transition also sets the BIT 2 output to Logic

Information furnished by Intronics is believed to be accurate and reliable. However, no

responsibility is assumed by Intronics for its use; nor for any infringements of patents or

other rights of third parties which may result from its use. No license is granted by

implication or otherwise under any patent or patent rights of Intronics.

FEATURES

14-BIT Resolution and Accuracy

Fast 12 s Conversion Time (ADC1131J/K)

Low 10ppm/ C Maximum Gain TC

User Choice of Input Range

No Missing Codes

APPLICATIONS

Wide Band Data Digitizing Multi-Channel

Computer Interface High Accuracy Data

Acquisition X-Ray Tomography

Nuclear Accelerator Instrumentation

Models ADC1130, ADC1131

At this point the STATUS and CLOCK OUT return to Logic "0" and the

conversion cycle ends.

The serial data output is of the non-return-to-zero (NRZ) format. The

data is available, MSB first, 20ns after each of the fourteen "0" to "1"

clock transitions.

Analog to Digital Converter

1400 Providence Highway, Building #2

Norwood, MA 02062

Phone (781) 551-5500

FAX (781) 551-5555

www.intronicspower.com

14-Bit High Speed

Figure 1. Timing Diagram

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