500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs

Description

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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.

Key Features

• 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

Applications/Uses

• Automotive Systems
• Battery-Operated Systems
• Communication Systems
• Data Acquisition
• Medical Instrumentation
• Portable Data Logging