Features: ♦ 357ksps 10-Bit Successive-Approximation Register (SAR) ADCs
♦ Single True-Differential Analog Input Channel with Unipolar-/Bipolar-Selected Input (MAX1392)
♦ Dual Single-Ended Input Channel with Channel- Selected Input (MAX1395)
♦ ±0.5 LSB INL, ±0.5 LSB DNL, No Missing Codes
♦ ±1 LSB Total Unadjusted Error
♦ 61dB SINAD at 85kHz Input Frequency
♦ Single Supply Voltage (+1.5V to +3.6V)
♦ 0.945mW at 350ksps, 1.8V
♦ 0.27mW at 100ksps, 1.8V
♦ 3.1µW at 1ksps, 1.8V
♦ <1µA Shutdown Current
♦ External Reference (0.6V to VDD)
♦ AutoShutdown Between Conversions
♦ SPI-/QSPI-/MICROWIRE-/DSP-Compatible, 3- or 4-Wire Serial Interface
♦ Small (3mm x 3mm), 10-Pin TDFN or µMAX (3mm x 5mm) Package
Application Portable Datalogging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Process ControlPinout
SpecificationsVDD to GND..............................................................-0.3V to +4V
SCLK, CS, OE, CH1/CH2, UNI/BIP,
DOUT to GND..............................................-0.3V to (VDD + 0.3V)
AIN+, AIN-, AIN1, AIN2, REF to GND ...........-0.3V to (VDD + 0.3V)
Maximum Current into Any Pin ..........................................±50mA
Continuous Power Dissipation (TA = +70°C)
10-Pin TDFN (derate 18.5mW/°C above +70°C) ........1481.5mW
10-Pin µMAX (derate 5.6mW/°C above +70°C) ............444.4mW
Operating Temperature Ranges
MAX139_E_ _......................................................-40°C to +85°C
MAX139_M_ _....................................................-55°C to +125°C
Junction Temperature.......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) ..................................+300°CDescriptionThe MAX1392/MAX1395 micropower, serial-output, 10-bit, analog-to-digital converters (ADCs) operate with a single power supply from +1.5V to +3.6V. These ADCs feature automatic shutdown, fast wake-up, and a high-speed 3-wire interface. Power consumption is only 0.740mW (VDD = +1.5V) at the maximum conversion rate of 357ksps. AutoShutdown™ between conversions reduces power consumption at slower throughput rates.
The MAX1392/MAX1395 require an external reference VREF that has a wide range from 0.6V to VDD. The MAX1392 provides one true-differential analog input that accepts signals ranging from 0 to VREF (unipolar mode) or ±VREF/2 (bipolar mode). The MAX1395 provides two single-ended inputs that accept signals ranging from 0 to VREF. Analog conversion results are available through a 5MHz, 3-wire SPI™-/QSPI™- /MICROWIRE™-/digital signal processor (DSP)-compatible serial interface. Excellent dynamic performance, low voltage, low power, ease of use, and small package sizes make these converters ideal for portable battery- powered data-acquisition applications, and for other applications that demand low power consumption and minimal space.
The MAX1392/MAX1395 are available in a space-saving (3mm x 3mm) 10-pin TDFN package or 10-pin µMAX® package. The parts operate over the extended (-40°C to +85°C) and military (-55°C to +125°C) temperature ranges.
MAX1392 Data Sheet
