AS1521-T

Ratio - S/H:ADC:	1:1
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Operating Temperature:	-40°C ~ 85°C
Features:	--
Voltage - Supply, Digital:	2.7 V ~ 3.6 V
Voltage - Supply, Analog:	2.7 V ~ 3.6 V
Reference Type:	External, Internal
Architecture:	SAR
Number of A/D Converters:	1
Series:	--
Configuration:	S/H-ADC
Data Interface:	SPI
Input Type:	Differential, Pseudo-Differential, Single Ended
Number of Inputs:	4, 8
Sampling Rate (Per Second):	300k
Number of Bits:	10
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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• Introduction

AS1521-T is an A/D converter manufactured by Texas Instruments. It is used in a wide range of data acquisition applications, from industrial sensors to consumer electronic products. The AS1521-T is a single-chip solution that enables data conversion from analog to digital. It has low power consumption and is available in packages ranging from 8- to 28-pins. The as1521-T has a 10-bit resolution and supports sample rates up to 16KHz.

• The application field of AS1521-T

The AS1521-T can be used in a variety of applications, from industrial and automotive sensors to consumer electronics. It is commonly used in applications such as temperature and pressure measurements, oxygen sensing, accelerometry, tilt sensing, vibration sensing, medical diagnostic systems, and industrial control systems. It is also used in consumer applications such as toys, digital cameras, and remote controls. It is suitable for environments with low power consumption and high accuracy requirements.

• The working principle of AS1521-T

The AS1521-T uses a resistor-based voltage divider network to measure an input voltage and convert it to a digital value. The resistor network is connected to two multiplexers, one connected to the voltage divider and one connected to the reference voltage. The multiplexers are used to select the appropriate resistor values for the input voltage measurement. The output of the multiplexer is then connected to an integrator, which is used to accumulate the input voltage over time. The integration capacitors are then discharged and a voltage is measured. This voltage is compared against a reference voltage and converted to a digital value. This digital value is then sent to the output pins of the AS1521-T.

• Conclusion

The AS1521-T is a high-performance, low-power A/D converter from Texas Instruments. It is suitable for a variety of applications, ranging from industrial and automotive sensors to consumer electronics. It has a 10-bit resolution and supports sample rates up to 16KHz. The AS1521-T uses a resistor-based voltage divider network to measure an input voltage and convert it to a digital value. It is an ideal solution for high-precision, low-power data acquisition applications.

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