SUNNYVALE, USA: Maxim Integrated Products has introduced the MAX11645, the industry's smallest 2-channel ADC. This 12-bit I2C ADC includes an internal reference in a tiny 1.9x2.2mm wafer-level package (WLP).
A 4x3 bump array with 0.5mm pitch facilitates layout on four-layer PCBs, while a slim 0.64mm height makes it perfect for designs laying components out on both sides of the PCB. This ADC minimizes both external component count and total solution size, only requiring a 0.1microfarad ceramic bypass capacitor on the supply voltage input.
Combining a compact footprint with best-in-class power dissipation (18microwatts at 1ms conversion times), the MAX11645 is well suited for applications ranging from energy-harvesting sensors, to portable consumer electronics, to point-of-load monitoring (voltage, current, and temperature) in networking and computer systems.
The MAX11645 is capable of sample rates up to 94ksps--28x faster than the nearest competitor in a comparable solution size. By taking advantage of the ADC's high sample rate, multiple channels can be converted in a short period of time. This capability allows the device to spend more time in shutdown mode, further reducing total system power consumption.
The MAX11645 operates from a single 2.7V to 3.6V supply and includes a 2.048V internal reference. This 12-bit ADC offers up to 70dB SINAD, ±1 LSB (max) INL and DNL error, plus 0.3ppm/degrees Celsius gain-error temperature drift. Input signals in the 0 to Vref (unipolar) or ±Vref/2 (bipolar) range can be resolved with true 12-bit accuracy.
The MAX11645 is the latest release in Maxim's extensive I2C ADC family. Offering pin- and software-compatible 2-/4-/8-/12-channel, 8-/10-/12-bit ADCs enables designers to easily trade off space, performance, and cost on platform designs. Uniquely, these ADCs also include internal references, FIFOs, and selectable scan modes.