Overview
The MAX1394ETB+T, produced by Analog Devices Inc./Maxim Integrated, is a micropower, serial-output, 8-bit analog-to-digital converter (ADC). This device is part of the MAX1391/MAX1394 family, which is designed for low-power and space-efficient applications. The MAX1394 specifically offers two single-ended analog input channels, making it suitable for a variety of data acquisition and battery-powered instruments.
Operating with a single power supply from +1.5V to +3.6V, the MAX1394 is ideal for applications that require low power consumption and minimal space. It features automatic shutdown between conversions, fast wake-up, and a high-speed 3-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSPs.
Key Specifications
| Parameter | Symbol | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|---|
| Throughput Rate | fSAMPLE | 12 clocks per conversion | - | 416 | - | ksps |
| Power-Up and Acquisition Time | tACQ | Three SCLK cycles | - | 600 | - | ns |
| Aperture Delay | tAD | - | - | 8 | - | ns |
| Aperture Jitter | tAJ | - | - | 30 | - | ps |
| Serial-Clock Frequency | fCLK | - | 0.1 | 5.0 | - | MHz |
| Input Voltage Range (Unipolar) | VIN | - | 0 | VREF | - | V |
| Input Leakage Current | - | Channel not selected, or conversion stopped, or in shutdown mode | - | ±1.5 | - | µA |
| Input Capacitance | - | - | - | 16 | - | pF |
| Supply Current at 416ksps | IDD | VDD = 1.8V | 710 | 800 | - | µA |
| Shutdown Current | IDD | Power-down mode | - | 0.2 | - | µA |
Key Features
- 416ksps, 8-Bit Successive-Approximation Register (SAR) ADCs
- Dual Single-Ended Input Channel with Channel-Selected Input
- ±0.2 LSB INL, ±0.2 LSB DNL, No Missing Codes
- ±0.25 LSB Total Unadjusted Error (TUE)
- 49dB SINAD at 100kHz Input Frequency
- Single Supply Voltage (+1.5V to +3.6V)
- Low Power Consumption: 0.97mW at 416ksps, 1.8V
- AutoShutdown Between Conversions
- SPI-/QSPI-/MICROWIRE-/DSP-Compatible, 3- or 4-Wire Serial Interface
- Small (3mm x 3mm), 10-Pin TDFN Package
- Extended Temperature Range: -40°C to +85°C
Applications
- Portable Datalogging and Data Acquisition
- Medical Instruments
- Battery-Powered Instruments
- Process Control
Q & A
- What is the maximum throughput rate of the MAX1394 ADC?
The MAX1394 has a maximum throughput rate of 416ksps.
- What is the input voltage range for the MAX1394 in unipolar mode?
The input voltage range for the MAX1394 in unipolar mode is from 0 to VREF.
- What is the power consumption of the MAX1394 at 416ksps and 1.8V supply voltage?
The power consumption is approximately 0.97mW at 416ksps and 1.8V supply voltage.
- Does the MAX1394 support automatic shutdown between conversions?
Yes, the MAX1394 features AutoShutdown between conversions to reduce power consumption.
- What is the temperature range for the MAX1394?
The MAX1394 operates over an extended temperature range of -40°C to +85°C.
- What type of package is the MAX1394 available in?
The MAX1394 is available in a small (3mm x 3mm), 10-pin TDFN package.
- Is the MAX1394 compatible with SPI, QSPI, and MICROWIRE interfaces?
Yes, the MAX1394 is compatible with SPI, QSPI, MICROWIRE, and DSP interfaces.
- What is the typical input leakage current for the MAX1394?
The typical input leakage current is ±1.5µA when the channel is not selected, or during conversion stop, or in shutdown mode.
- What is the input capacitance of the MAX1394?
The input capacitance is 16pF.
- What is the shutdown current of the MAX1394?
The shutdown current is less than 1µA.
