4-/6-/8-CHANNEL, 16-/14-BIT, SIMULTANEOUS-SAMPLING ADCS

The MAX11661-MAX11666 are 12-/10-/8-bit, compact, low-power, successive approximation analog-to-digital converters (ADCs). These high-performance ADCs include a high-dynamic range sample-and-hold and a high-speed serial interface. These ADCs accept a full-scale input from 0V to the power supply or to the reference voltage. The MAX11662/MAX11664/MAX11666 feature dual, single-ended analog inputs connected to the ADC core using a 2:1 MUX. The devices also include a separate supply input for data interface and a dedicated input for reference voltage. In contrast, the single-channel devices generate the reference voltage internally from the power supply. These ADCs operate from a 2.2V to 3.6V supply and consume only 3.3mW. The devices include full powerdown mode and fast wake-up for optimal power management and a high-speed 3-wire serial interface. The 3-wire serial interface directly connects to SPI, QSPI, and MICROWIRE devices without external logic. Excellent dynamic performance, low voltage, low power, ease of use, and small package size make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low-power consumption and minimal space. These ADCs are available in a 10-pin µMAX package, and a 6-pin SOT23 package. These devices operate over the -40°C to +125°C temperature range.

• 500ksps Conversion Rate, No Pipeline Delay
• 12-/10-/8-Bit Resolution
• 1-/2-Channel, Single-Ended Analog Inputs
• Low-Noise 73dB SNR
• Variable I/O: 1.5V to 3.6V (Dual-Channel Only)
  • Allows the Serial Interface to Connect Directly to 1.5V, 1.8V, 2.5V, or 3V Digital Systems
• 2.2V to 3.6V Supply Voltage
• Low Power
  • 3.3mW
  • Very Low Power Consumption at 8µA/ksps

External Reference Input (Dual-Channel Devices Only)

1.3µA Power-Down Current

SPI-/QSPI-/MICROWIRE-Compatible Serial Interface

10-Pin, 3mm x 5mm µMAX Package

6-Pin, 2.8mm x 2.9mm SOT23 Package

Wide -40°C to +125°C Operation