AD7873ARUZ - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7873ARUZ
Manufacturer

ADI
ChipWorker Part#

CW4027863
Category

Analog to Digital, ADC IC
Package

TSSOP-16
Description

ADC Single SAR 125KSPS 12Bit Serial 16Pin TSSOP Tube
Documentation

Datasheet

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AD7873ARUZ Specifications

Attribute	Attribute Value

Part Number	AD7873ARUZ
Manufacturer	ADI
ChipWorker Part#	CW4027863
Category	Analog to Digital, ADC IC
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	16 Pin
Case/Package	TSSOP-16
Supply Voltage (DC)	3.00 V
Number of Circuits	1 Circuit
Number of Channels	5 Channel
Number of Positions	16 Position
Number of Bits	12 Bit
Power Dissipation	1.368 W
Sample Rate	125 KSPS
Resolution (Bits)	12.0 Bit
Input Capacitance	37.0 pF
Number of ADCs	1 ADC
Operating Temperature (Max)	85 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1.368 mW
Number of Input Channels	1, 2 Channel
Supply Voltage	2.2V ~ 5.25V
Supply Voltage (Max)	5.25 V
Supply Voltage (Min)	2.2 V
Input Voltage	2.5 V
	expand all
Size-Length	5 mm
Size-Width	4.4 mm
Size-Height	1.65 mm
Operating Temperature	-40℃ ~ 85℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
Mil-Spec	No
REACH SVHC Compliance Edition	2015/12/17

Product Description

Product Details
The AD7873 is a 12-bit successive approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The AD7873 operates from a single 2.2 V to 5.25 V supply, with a throughput rate of 125 kSPS.
The AD7873 features direct battery measurement, temperature measurement, and touch pressure measurement. The AD7873 also has an on-board reference of 2.5 V that can be used for the auxiliary input, battery monitor, and temperature measurement modes. When not in use, the internal reference can be shut down to conserve power. An external reference can also be applied and varied from 1 V to VCC with an analog input range from 0 V to VREF. The device includes a shutdown mode that reduces the current consumption to less than 1 µA.
The AD7873 features on-board switches. This, coupled with low power and high speed operation, makes the device ideal for battery-powered systems with resistive touch screens. The part is available in a 16-lead, 0.15 inch quarter size outline package (QSOP), a 16-lead, thin shrink small outline package (TSSOP), and a 16-lead, lead frame chip scale package (LFCSP).
Product Highlights
1. Ratiometric conversion mode available, eliminating errors due to on-board switch resistances.
2. On-board temperature sensor: −40°C to +85°C.
3. Battery monitor input.
4. Touch pressure measurement capability.
5. Low power consumption of 1.37 mW maximum with the reference off, or 2.41 mW typical with the reference on, at 125 kSPS and VCC at 3.6 V.
6. Package options include 4 mm × 4 mm LFCSP.
7. Analog input range from 0 V to VREF.
8. Versatile serial I/O ports.
Applications
Personal digital assistants
Smart hand-held devices
Touch screen monitors
Point-of-sale terminals
Pagers
### Features and Benefits
4-Wire touch screen interface
On-chip temperature sensor:
–40°C to +85°C
On-chip 2.5 V reference
Direct battery measurement (0 V to 6 V)
Touch pressure measurement
Specified throughput rate
of 125 kSPS
Single supply, VCC of 2.2 V to 5.25 V
Ratiometric conversion
High speed serial interface
Programmable
8- or 12-bit resolution
One auxiliary analog input
Shutdown mode: 1 µA maximum
16-lead QSOP, TSSOP, and LFCSP packages

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
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- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

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