Datasheet > TSS400-S2

TSS400-S2

更新时间： 2022-09-17 01:04:20

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德州仪器 - TI		/
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uPOWER PROGRAMMABLE HIGH-PRECISION

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TSS400-S2 数据手册

TSS400-S2

µPOWER PROGRAMMABLE HIGH-PRECISION

SENSOR SIGNAL PROCESSOR

SLMS002 – D4101, OCTOBER 1993

analog-to-digital converter (ADC) (continued)

The interpreter automatically switches on the switched-sensor supply voltage (SV ) just prior to making the

A/D conversion and switches it off immediately after the conversion is complete. The MEASR instruction is

followed by a BYTE instruction. The operand of the BYTE instruction specifies the number of conversions to

be made and whether the conversions are to be compensated or noncompensated. A noncompensated

measurement is a single A/D conversion. A compensated measurement is defined as a measurement wherein

two conversions are made, one conversion with the ADC comparator connected normally and the other

conversion with the comparator inputs reversed. The two results are added together so comparator offsets

cancel. The interpreter automatically takes care of all required switching to perform the specified type of

conversion.

Absolutemeasurements are possible if SV is held constant. This requires a stable V during the conversion

and constant loading of SV . The ADC measures the ratio of the input voltage at the analog input (V ) to

the switched-sensor supply voltage (SV ) and not absolute voltages. This ensures that the measurement of

the sensors is independent of the supply voltage.

Set SV

See Note A

Reset SV

Clear

CLR

DL13

DL11

DL10

DL9

See Note A

Analog

Multiplexer

See Note A

MUX

–

FLAC

Digital-to-Analog

Converter

ref

RAM

AGND

TSS400

NOTE A: These signals are automatically controlled by the interpreter during A/D conversion.

Figure 2. ADC Functional Block Diagram

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

1...4 5 678 9 10...32

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