Overview
The ADS7835EB/2K5G4 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, making it ideal for battery-operated systems such as wireless communication devices, portable multi-channel data loggers, and spectrum analyzers. The ADS7835EB/2K5G4 operates over a temperature range of –40°C to +85°C and is available in an MSOP-8 package.
Key Specifications
| Parameter | Min | Max | Units | |
|---|---|---|---|---|
| Resolution | 12 | - | - | Bits |
| 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 |
| Power-Down Current | 0.5 | - | - | mA |
| 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 (2.3V to 2.9V range).
- Synchronous serial interface for data transfer.
- Low power consumption: 17.5mW at 500kHz throughput rate and 2.5mW in power-down mode.
- High-speed conversion: up to 500kHz throughput rate.
- Bipolar input capability with a range of ±2.5V when using the internal reference.
- Small MSOP-8 package.
- Operating temperature range of –40°C to +85°C.
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.
Q & A
- What is the resolution of the ADS7835EB/2K5G4?
The ADS7835EB/2K5G4 has a 12-bit resolution.
- What is the input voltage range of the ADS7835EB/2K5G4 when using the internal reference?
The input voltage range is ±2.5V when using the internal reference.
- What is the maximum throughput rate of the ADS7835EB/2K5G4?
The maximum throughput rate is 500kHz.
- How much power does the ADS7835EB/2K5G4 consume at 500kHz throughput rate?
The device consumes 17.5mW at a 500kHz throughput rate.
- What is the power consumption in power-down mode?
The power consumption in power-down mode is 2.5mW.
- What is the operating temperature range of the ADS7835EB/2K5G4?
The operating temperature range is –40°C to +85°C.
- What type of package is the ADS7835EB/2K5G4 available in?
The device is available in an MSOP-8 package.
- Can the ADS7835EB/2K5G4 use an external reference voltage?
Yes, the device can use an external reference voltage in the range of 2.3V to 2.9V.
- What is the typical acquisition time for the ADS7835EB/2K5G4?
The typical acquisition time is 0.350µs.
- How does the device handle bipolar inputs?
The ADS7835EB/2K5G4 can handle bipolar inputs, allowing the input to swing below ground.
