Overview
The ADS8345EB/2K5G4, produced by Texas Instruments, is an 8-channel, 16-bit, sampling Analog-to-Digital (A/D) converter. It features a synchronous serial interface and is designed for low-power, high-speed applications. The device operates from a single supply voltage ranging from 2.7V to 5.25V and includes an onboard multiplexer, making it ideal for battery-operated systems such as personal digital assistants, portable multi-channel data loggers, and measurement equipment. The ADS8345EB/2K5G4 is available in QSOP-20 and SSOP-20 packages and is specified over the –40°C to +85°C temperature range.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Resolution | 16 | Bits | ||
| Full-Scale Input Span | -VREF | +VREF | V | |
| Absolute Input Range | -0.2 + VCC | +0.2 + VCC | V | |
| Conversion Rate | 100 | kHz | ||
| Signal-to-(Noise + Distortion) | 85 | dB | ||
| Power Dissipation | 7.5 | 8 | 10 | mW |
| Supply Voltage | 2.7 | 5.25 | V | |
| Operating Temperature | -40 | +85 | °C | |
| Package Type | QSOP-20, SSOP-20 |
Key Features
- 8-channel single-ended or 4-channel differential input
- 16-bit resolution with synchronous serial interface
- Single supply operation: 2.7V to 5.25V
- Low power dissipation: 8mW at 100kHz throughput rate
- Shutdown mode reducing power to under 15µW
- Onboard multiplexer for channel selection
- High signal-to-noise ratio (SINAD): 85dB at 100kHz
- Low total harmonic distortion (THD): -96dB at 10kHz
- Channel-to-channel isolation: 105dB at 10kHz
Applications
- Battery-operated systems such as personal digital assistants and portable multi-channel data loggers
- Measurement equipment requiring low power and high accuracy
- Remote data acquisition systems benefiting from low-cost isolation
- Industrial automation and control systems
- Medical devices requiring precise analog-to-digital conversion
Q & A
- What is the resolution of the ADS8345EB/2K5G4?
The resolution of the ADS8345EB/2K5G4 is 16 bits. - What is the typical power dissipation of the ADS8345EB/2K5G4 at 100kHz throughput rate?
The typical power dissipation is 8mW at a 100kHz throughput rate. - What is the operating temperature range of the ADS8345EB/2K5G4?
The operating temperature range is –40°C to +85°C. - What types of packages are available for the ADS8345EB/2K5G4?
The device is available in QSOP-20 and SSOP-20 packages. - Can the ADS8345EB/2K5G4 operate in both single-ended and differential input modes?
Yes, it can operate in both single-ended and differential input modes. - What is the signal-to-noise ratio (SINAD) of the ADS8345EB/2K5G4 at 100kHz?
The SINAD is 85dB at 100kHz. - How does the shutdown mode affect power consumption?
The shutdown mode reduces power dissipation to under 15µW. - What is the maximum conversion rate of the ADS8345EB/2K5G4?
The maximum conversion rate is 100kHz. - Does the ADS8345EB/2K5G4 have an internal clock option?
Yes, it can operate with either an external serial clock or an internal clock. - What is the typical supply current at 100kHz sampling rate?
The typical supply current is around 1.5mA to 2.0mA at a 100kHz sampling rate.
