Overview
The ADS7835EB/250G4 is a 12-bit, high-speed, low-power sampling analog-to-digital converter (A/D) produced by Texas Instruments. This device is equipped with a sample-and-hold (S/H) circuit, an internal 2.5V reference, and a synchronous serial interface. It is designed for low power consumption, with a typical power dissipation of 17.5mW at a 500kHz throughput rate, and can be placed into a power-down mode to reduce dissipation to 2.5mW. The ADS7835EB/250G4 is ideal for battery-operated systems, such as wireless communication devices, portable multi-channel data loggers, and spectrum analyzers.
Key Specifications
| Parameter | Min | Max | Units | |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| Analog Input Voltage Range | -VREF | - | +VREF | V |
| Input Capacitance | 25 | - | - | pF |
| Input Resistance During Conversion | 2 | - | - | kΩ |
| Integral Linearity | ±1 | ±2 | ±0.5 | LSB |
| Differential Linearity | ±0.8 | ±0.5 | ±1 | LSB |
| Conversion Time | 1.625 | - | - | µs |
| Acquisition Time | 0.350 | - | - | µs |
| Throughput Rate | 500 | - | - | kHz |
| Power Supply Voltage | 4.75 | 5.25 | - | V |
| Quiescent Current | - | 3.5 | - | mA |
| Power Dissipation | - | 17.5 | - | mW |
| Operating Temperature Range | -40 | - | +85 | °C |
Key Features
- 12-bit resolution with no missing codes over the specified temperature range.
- Internal 2.5V reference with the option to use an external reference in the range of 2.3V to 2.9V.
- High-speed conversion with a throughput rate of up to 500kHz.
- Low power consumption with a typical power dissipation of 17.5mW and a power-down mode reducing dissipation to 2.5mW.
- Synchronous serial interface for data transfer.
- True bipolar input capability with an input range of ±2.5V when using the internal reference.
- Small MSOP-8 package and guaranteed operation over the –40°C to +85°C temperature range.
- CMOS logic family with well-defined logic levels.
Applications
- Battery-operated systems such as wireless communication devices.
- Portable multi-channel data loggers.
- Spectrum analyzers.
- Remote data acquisition systems where low-cost isolation is required.
- Any application requiring high-speed, low-power analog-to-digital conversion.
Q & A
- What is the resolution of the ADS7835EB/250G4?
The ADS7835EB/250G4 has a 12-bit resolution.
- What is the typical power dissipation of the ADS7835EB/250G4 at 500kHz throughput rate?
The typical power dissipation is 17.5mW.
- Can the ADS7835EB/250G4 be used with an external reference voltage?
- What is the input voltage range when using the internal 2.5V reference?
The input voltage range is ±2.5V when using the internal 2.5V reference.
- What is the operating temperature range of the ADS7835EB/250G4?
The operating temperature range is –40°C to +85°C.
- How does the power-down mode affect power consumption?
In power-down mode, the power dissipation is reduced to 2.5mW.
- What is the throughput rate of the ADS7835EB/250G4?
The throughput rate can be up to 500kHz.
- What type of logic family does the ADS7835EB/250G4 use?
The ADS7835EB/250G4 uses CMOS logic family.
- What is the package type of the ADS7835EB/250G4?
The package type is MSOP-8.
- Is the ADS7835EB/250G4 suitable for battery-operated systems?
