Overview
The AD7873ARUZ-REEL7, produced by Analog Devices Inc., is a 12-bit successive approximation Analog-to-Digital Converter (ADC) designed for various applications, particularly in touch screen and data acquisition systems. This device operates from a single supply voltage of 2.2 V to 5.25 V and features a synchronous serial interface along with low on-resistance switches for driving touch screens. It includes on-chip components such as a temperature sensor, battery monitor, and a 2.5 V reference, making it versatile for different measurement tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Sampling Rate | 125 kSPS |
| Supply Voltage | 2.2 V to 5.25 V |
| Operating Temperature | -40°C to +85°C |
| Package Type | 16-lead TSSOP |
| Interface Type | Serial |
| Integral Nonlinearity (INL) | 2 LSB |
| Input Capacitance | 37 pF |
| Power Dissipation | 1.4 mW |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
Key Features
- 4-wire touch screen interface
- On-chip temperature sensor and battery monitor
- On-chip 2.5 V reference
- Direct battery measurement (0 V to 6 V)
- Touch pressure measurement
- Ratiometric conversion
- High speed serial interface
- Programmable 8-bit or 12-bit resolution
- Auxiliary analog input
- Shutdown mode with current consumption less than 1 µA
Applications
- Personal digital assistants
- Smart hand-held devices
- Touch screen monitors
- Point-of-sale terminals
- Pagers
- Multiplexed data acquisition systems
- Battery operated systems
- Digital multimeters and PLCs (Programming Logic Controllers)
- Audio/Video devices
- Wireless and wired broadband communications
Q & A
- What is the resolution of the AD7873ARUZ-REEL7?
The AD7873ARUZ-REEL7 has a resolution of 12 bits.
- What is the sampling rate of the AD7873ARUZ-REEL7?
The sampling rate is 125 kSPS.
- What is the operating supply voltage range for the AD7873ARUZ-REEL7?
The operating supply voltage range is from 2.2 V to 5.25 V.
- What is the operating temperature range for the AD7873ARUZ-REEL7?
The operating temperature range is from -40°C to +85°C.
- What type of interface does the AD7873ARUZ-REEL7 use?
The AD7873ARUZ-REEL7 uses a serial interface.
- Does the AD7873ARUZ-REEL7 have an on-chip temperature sensor?
Yes, the AD7873ARUZ-REEL7 includes an on-chip temperature sensor.
- Can the AD7873ARUZ-REEL7 measure touch pressure?
Yes, the AD7873ARUZ-REEL7 can measure touch pressure.
- What is the power dissipation of the AD7873ARUZ-REEL7?
The power dissipation is approximately 1.4 mW.
- Is the AD7873ARUZ-REEL7 RoHS compliant?
Yes, the AD7873ARUZ-REEL7 is ROHS3 compliant.
- What is the moisture sensitivity level (MSL) of the AD7873ARUZ-REEL7?
The MSL is 1 (Unlimited).
