The ADS8028 is a 12-bit analog-to-digital converter (ADC), capable of operating at sampling speeds up to 1 MSPS. The device is based on a successive approximation register (SAR) core and provides an inherent sample-and-hold (SH) front-end.
In addition to having eight analog input channels, the ADS8028 offers an internal temperature sensor with 0.25°C resolution and an internal voltage reference. A nine-channel internal multiplexer enables multiple channels to be selected (including the internal temperature sensor) that are indefinitely scanned in a sequential manner. A simple SPI-compatible serial interface provides easy communication and control between the device and host controller. The digital supply can operate from 1.65 V to 5.25 V, enabling direct interface with a wide range of processors and controllers.
At full speed of 1 MSPS, the ADS8028 dissipates only 17 mW. The device offers flexible power-down modes to save power when conversions are not being performed. The ADS8028 performance is specified over the extended industrial temperature range of –40°C to +125°C.
The ADS8028 is ideal for demanding measurement applications, such as sensor output monitoring, power-supply monitoring, and printed circuit board (PCB) hot-spot analysis, and is available in a small form-factor QFN-20 package.
|Sample Rate (max) (SPS)|
|# Input Channels|
|Input Range (Min) (V)|
|Input Range (Max) (V)|
|Analog Voltage AV/DD (Min) (V)|
|Analog Voltage AV/DD (Max) (V)|
|Operating Temperature Range (C)|
|Approx. Price (US$)|
|THD (Typ) (dB)|
|INL (Max) (+/-LSB)|
|-40 to 125|
|3.25 | 1ku|
| Ext |
|Sample & Buy|
|WEBENCH® ADS8028 Reference Selector|
|Part #||Name||Product Family||Comments|
|OPA836||Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp||OPERATIONAL AMPLIFIER - HIGH SPEED AMPLIFIER||Very Low Power, Rail-to-Rail out,Very Low Power, Rail to Rail out, Negative Rail in, VFB Op Amp|
|REF5025||Low Noise, Very Low Drift, Precision Voltage Reference||VOLTAGE REFERENCE - SERIES VOLTAGE REFERENCE||Low Noise, Very Low Drift, 2.5V Precision Voltage Reference|
|TPS79618||Single Output LDO, 1.0A, Fixed(1.8V), Low Noise, High PSRR||LINEAR REGULATOR (LDO) - SINGLE CHANNEL LDO||Single Output LDO, 1.0A, Fixed(1.8V), Low Noise, High PSRR|