MAX11661:500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs

Small, Low-Power, SPI, 1-/2-Channel, 500ksps 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.

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
MAX11661, MAX11662, MAX11663, MAX11664, MAX11665, MAX11666: Typical Application Circuit
MAX11661, MAX11662, MAX11663, MAX11664, MAX11665, MAX11666: Typical Application Circuit
Applications/Uses
  • Automotive Systems
  • Battery-Operated Systems
  • Communication Systems
  • Data Acquisition
  • Medical Instrumentation
  • Portable Data Logging
DataSheet
titleDownload file
MAX11661-MAX11666 Data SheetMAX11661-MAX11666.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputExternal VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxminmaxmaxSee Notes
MAX1166181500SARSPIS.E. Only--3.649.5-700.25SOT/6$0.69 @1k
MAX116628213.6549.5-700.25µMAX-EP/10$0.98 @1k
MAX11663101--61.5-850.5SOT/6$1.07 @1k
MAX1166410213.6561.5-850.5µMAX-EP/10$1.05 @1k
MAX11665121--73-851SOT/6$1.18 @1k
MAX1166612213.6573-851µMAX-EP/10$1.39 @1k
Design kits & evaluation modules
Related Products
  • MAX11336:500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access
  • MAX11135:500ksps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs
  • MAX11665:500ksps, Low-Power, Serial 12-/10-/8-Bit ADCs
  • MX7820:CMOS, 1.3µs, 8-Bit ADC with Voltage Reference and Track/Hold
  • MX7821:µP-Compatible, 660ns, 8-Bit ADC with Track/Hold
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX11661AUT+ActiveSOT,;6 pin;9 mm²-40°C to +125°CLead Free
MAX11661AUT+TActiveSOT,;6 pin;9 mm²-40°C to +125°CLead Free
MAX11661-MAX11666.pdf MAX11666
MAX11661-MAX11666.pdf MAX11664