Overview
The AD7873ARUZ is a 12-bit touch screen digitizer and successive approximation analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed to interface with 4-wire resistive touch screens and offers a range of features that make it suitable for various applications. It operates from a single supply voltage of 2.2V to 5.25V and has a throughput rate of 125 kSPS. The device includes on-chip temperature and battery measurement capabilities, as well as an on-board 2.5V reference voltage. Its compact 16-lead TSSOP package makes it ideal for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Category | Data Converter ICs › Touch Screen Controllers |
| Resolution (Bits) | 12 b |
| Interface | Serial |
| Voltage Reference | External, Internal |
| Voltage - Supply | 2.2V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) |
| Sampling Rate | 125 kSPS |
| Polarity | Unipolar |
| Integral Nonlinearity (INL) | 2 LSB |
| Number of A/D Converters | 1 |
Key Features
- 4-wire resistive touch screen interface
- On-chip temperature sensor: -40°C to +85°C
- On-chip 2.5 V reference voltage
- Direct battery measurement (0 V to 6 V)
- Touch pressure measurement
- Specified throughput rate of 125 kSPS
- Single supply operation: 2.2 V to 5.25 V
- Ratiometric conversion
- High speed serial interface
- Programmable 8-bit or 12-bit resolution
- Auxiliary analog input
- Shutdown mode: 1 µA maximum
Applications
- Personal digital assistants
- Smart hand-held devices
- Touch screen monitors
- Point-of-sale terminals
- Pagers
- Communication Systems
- Automotive
- Multiplexed Data Acquisition Systems
- Medical Imaging
- High Speed Data Acquisition for PCs
- Displaying
- Industrial Process Control
- Cell Phones
- Audio/Video devices
- Smart antenna systems
Q & A
- What is the resolution of the AD7873ARUZ?
The AD7873ARUZ has a resolution of 12 bits.
- What is the operating voltage range of the AD7873ARUZ?
The AD7873ARUZ operates from a single supply voltage of 2.2V to 5.25V.
- What type of interface does the AD7873ARUZ use?
The AD7873ARUZ uses a high speed serial interface.
- What is the sampling rate of the AD7873ARUZ?
The AD7873ARUZ has a specified throughput rate of 125 kSPS.
- Does the AD7873ARUZ have on-chip temperature and battery measurement capabilities?
- What is the package type of the AD7873ARUZ?
The AD7873ARUZ is packaged in a 16-lead TSSOP (0.173", 4.40mm Width).
- What is the operating temperature range of the AD7873ARUZ?
The AD7873ARUZ operates over a temperature range of -40°C to +85°C.
- Does the AD7873ARUZ have a shutdown mode?
- What types of applications is the AD7873ARUZ suitable for?
The AD7873ARUZ is suitable for various applications including personal digital assistants, smart hand-held devices, touch screen monitors, and more.
- Does the AD7873ARUZ support external reference voltage?
