Overview
The ADS8860IDGSR is a 16-bit, 1-MSPS (mega-samples per second), single-ended input analog-to-digital converter (ADC) produced by Texas Instruments. This device is part of the successive approximation register (SAR) ADC family and is designed for high performance and low power consumption. It operates with a 2.5-V to 5-V external reference voltage, allowing for a wide selection of signal ranges without additional input signal scaling. The ADS8860IDGSR features an SPI-compatible serial interface with daisy-chain capability, making it suitable for cascading multiple devices. It also includes an optional busy-indicator bit to facilitate synchronization with the digital host.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Sample Rate | 1 MSPS |
| Input Type | Single-ended, unipolar |
| Input Range | 0 to +VREF |
| Reference Voltage | 2.5 V to 5 V |
| Analog Supply Voltage (AVDD) | 2.7 V to 3.6 V |
| Digital Supply Voltage (DVDD) | 1.65 V to 3.6 V |
| Operating Temperature | –40°C to +85°C |
| Power Consumption at 1 MSPS | 5.5 mW |
| Power Consumption at 100 kSPS | 0.55 mW |
| Power Consumption at 10 kSPS | 55 µW |
| Power-down Current (AVDD) | 50 nA |
| Full-scale Step Settling Time | 290 ns |
| Signal-to-Noise Ratio (SNR) | 93 dB |
| Total Harmonic Distortion (THD) | –108 dB |
| Integral Nonlinearity (INL) | ±1.0 LSB (typ), ±2.0 LSB (max) |
| Differential Nonlinearity (DNL) | ±1.0 LSB (max) |
| Package | VSSOP-10, VSON-10 |
Key Features
- High-resolution 16-bit conversion with a sample rate of 1 MSPS.
- No latency output for real-time data conversion.
- Unipolar, single-ended input range from 0 to +VREF.
- SPI-compatible serial interface with daisy-chain option for cascading multiple devices.
- Excellent AC and DC performance: SNR of 93 dB, THD of –108 dB, INL of ±1.0 LSB (typ), and DNL of ±1.0 LSB (max).
- Wide operating voltage ranges: AVDD from 2.7 V to 3.6 V, DVDD from 1.65 V to 3.6 V, and REF from 2.5 V to 5 V.
- Low-power dissipation: 5.5 mW at 1 MSPS, 0.55 mW at 100 kSPS, and 55 µW at 10 kSPS.
- Power-down current of 50 nA.
- Full-scale step settling time of 290 ns.
- Compact packaging in VSSOP-10 and VSON-10.
Applications
The ADS8860IDGSR is suitable for a variety of applications that require high-resolution, low-power, and high-speed data conversion. These include:
- Industrial automation and control systems.
- Medical devices such as patient monitoring systems and diagnostic equipment.
- Aerospace and defense systems requiring precise and reliable data conversion.
- Automotive systems, including sensor interfaces and data acquisition systems.
- Audio and video equipment where high signal-to-noise ratio and low distortion are critical.
- Test and measurement instruments, such as oscilloscopes and multimeters.
Q & A
- What is the resolution and sample rate of the ADS8860IDGSR?
The ADS8860IDGSR has a resolution of 16 bits and a sample rate of 1 MSPS. - What type of input does the ADS8860IDGSR support?
The ADS8860IDGSR supports single-ended, unipolar analog inputs. - What is the range of the reference voltage for the ADS8860IDGSR?
The reference voltage range is from 2.5 V to 5 V. - What are the operating voltage ranges for AVDD and DVDD?
AVDD operates from 2.7 V to 3.6 V, and DVDD operates from 1.65 V to 3.6 V. - How much power does the ADS8860IDGSR consume at different sample rates?
The power consumption is 5.5 mW at 1 MSPS, 0.55 mW at 100 kSPS, and 55 µW at 10 kSPS. - What is the power-down current of the ADS8860IDGSR?
The power-down current is 50 nA. - What is the full-scale step settling time of the ADS8860IDGSR?
The full-scale step settling time is 290 ns. - What are the package options for the ADS8860IDGSR?
The package options are VSSOP-10 and VSON-10. - Does the ADS8860IDGSR support daisy-chaining?
Yes, the ADS8860IDGSR supports daisy-chaining through its SPI-compatible serial interface. - What is the operating temperature range of the ADS8860IDGSR?
The operating temperature range is from –40°C to +85°C.
