CS5509

Features:

·Delta-Sigma A/D Converter
- 16-bit No Missing Codes
- Linearity Error: ±0.0015%FS
·Differential Input
- Pin Selectable Unipolar/Bipolar Ranges
- Common Mode Rejection
105 dB @ dc
120 dB @ 50, 60 Hz
·Either 5 V or 3.3 V Digital Interface
·On-chip Self-Calibration Circuitry
·Output Update Rates up to 200/second
·Ultra Low Power: 1.7 mW




Pinout






Specifications

Parameter	Symbol	Min	Typ	Max	UnitS
DC Power Supplies: Ground (Note 21) Positive Digital (Note 22) Positive Analog	GND VD+ VA+	-0.3 -0.3 -0.3	- - -	VD+)-0.3 6.0 6.0	V V V
Input Current, Any Pin Except Supplies (Notes 23 & 24)	Iin	-		±10	mA
Output Current	Iout	-	-	±25	mA
Power Dissipation (Total) (Note 25)		-	-	500	mW
Analog Input Voltage AIN and VREF pins	VINA	- 0.3		(VA+) + 0.3	V
Digital Input Voltage	VIND	-0.3		(VD+) + 0.3	V
Ambient Operating Temperaturet	TA	-40		125
Storage temperature	Tstg	-65		150

Notes: 21. No pin should go more positive than (VA+)+0.3V.
22. VD+ must always be less than (VA+)+0.3V, and can never exceed +6.0 V.
23. Applies to all pins including continuous overvoltage conditions at the analog input (AIN) pin.
24. Transient currents of up to 100mA will not cause SCR latch-up. Maximum input current for a power
supply pin is ± 50 mA.
25. Total power dissipation, including all input currents and output currents.

* WARNING: Operation at or beyond these limits may result in permanent damage to the device. Normal operation
is not guaranteed at these extremes.

Resolution (bits)	Throughput (Sps)	Integral Linearity (%FS)	Differential Linearity (±LSB)	Number of Channels	Power Consumption (mW)	Package
16	20???200	0.0015?%	0.25	1	1.7	16 PDIP 16 SOIC

Description

The CS5509 is a single supply, 16-bit, serial-output CMOS A/D converter. The CS5509 uses charge-balanced (delta-sigma) techniques to provide a low cost, high resolution measurement at output word rates up to 200 samples per second.

The on-chip digital filter CS5509 offers superior line rejection at 50 Hz and 60 Hz when the device is operated from a 32.768 kHz clock (output word rate = 20 Hz.).

The CS5509 has on-chip self-calibration circuitry which can be initiated at any time or temperature to ensure minimum offset and full-scale errors.

Low power, high resolution and small package size make the CS5509 an ideal solution for loop-powered transmitters, panel meters, weigh scales and battery