CS5501 查看數據表（PDF） - Cirrus Logic

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CS5501

Non-aliasing, 16- & 20-bit A/D Converters

Cirrus Logic 

CS5501 CS5503

CS5501/CS5503

SPECIFICATION DEFINITIONS

Linearity Error

The deviation of a code from a straight line which connects the two endpoints of the A/D

Converter transfer function. One endpoint is located 1/2 LSB below the first code transition

and the other endpoint is located 1/2 LSB beyond the code transition to all ones. Units in

percent of full-scale.

Differential Linearity

The deviation of a code’s width from the ideal width. Units in LSB’s.

Full-Scale Error

The deviation of the last code transition from the ideal (VREF-3/2 LSB’s). Units in LSBs.

Unipolar Offset

The deviation of the first code transition from the ideal (1/2 LSB above AGND) when in

unipolar mode (BP/UP low). Units in LSBs.

Bipolar Offset

The deviation of the mid-scale transition (011...111 to 100...000) from the ideal (1/2 LSB

below AGND) when in bipolar mode (BP/UP high). Units in LSBs.

Bipolar Negative Full-Scale Error

The deviation of the first code transition from the ideal when in bipolar mode (BP/UP high).

The Ideal is defined as lying on a straight line which passes through the final and mid-scale

code transitions. Units in LSBs.

Positive Full-Scale Input Overrange

The absolute maximum positive voltage allowed for either accurate system calibration or

accurate conversions. Units in volts.

Negative Full-Scale Input Overrange

The absolute maximum negative voltage allowed for either accurate system calibration or

accurate conversions. Units in volts.

Offset Calibration Range

The CS5501/CS5503 calibrate their offset to the voltage applied to the AIN pin when in system

calibration mode. The first code transition defines Unipolar Offset when BP/UP is low and the

mid-scale transition defines Bipolar Offset when BP/UP is high. The Offset Calibration Range

specification indicates the range of voltages applied to AIN that the CS5501 or CS5503 can

accept and still calibrate offset accurately. Units in volts.

Input Span

The voltages applied to the AIN pin in system-calibration schemes define the CS5501/CS5503

analog input range. The Input Span specification indicates the minimum and maximum input

spans from zero-scale to full-scale in unipolar, or from positive full scale to negative full scale

in bipolar, that the CS5501/CS5503 can accept and still calibrate gain accurately. Units in

volts.

3322

DS31F54

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