Overview
The MAX1118EKA+T is a single-supply, low-power, dual-channel, serial 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. It is packaged in an 8-pin SOT-23 package, making it highly compact and suitable for space-constrained applications. The device operates from a supply voltage range of 2.7V to 5.5V and consumes only 135µA at a sampling rate of 100ksps. It features an internal clock and a 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE devices, eliminating the need for external logic. The MAX1118EKA+T also includes an automatic shutdown mode that reduces the supply current to less than 1µA when the device is not in use, making it ideal for battery-powered and energy-efficient systems.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 8 | Bits |
| Number of Input Channels | 2 | |
| Conversion Rate (max) | 100 | ksps |
| Data Interface | SPI, QSPI, MICROWIRE | |
| Supply Voltage Range | 2.7V to 5.5V | V |
| Current Consumption at 100ksps | 135 | µA |
| Current Consumption in Power-Down Mode | < 1 | µA |
| Operating Temperature Range | -40°C to 85°C | °C |
| Relative Accuracy | ±1 LSB | |
| Differential Nonlinearity (DNL) | ±1 LSB | |
| Offset Error | ±0.5 LSB | |
| Gain Error | ±1 LSB | |
| Gain Temperature Coefficient | ±5 ppm/°C | |
| Small Signal Bandwidth | 4 MHz | |
| Spurious Free Dynamic Range (SFDR) | 66 dB | |
| Supply Rejection Ratio | ±0.5 LSB/V | |
| Total Unadjusted Error (TUE) | ±0.5 LSB |
Key Features
- Single-supply operation from 2.7V to 5.5V
- Low power consumption: 135µA at 100ksps and less than 1µA in power-down mode
- Dual-channel, 8-bit analog-to-digital conversion
- Internal clock and 3-wire serial interface (SPI, QSPI, MICROWIRE compatible)
- Automatic shutdown mode to reduce power consumption when not in use
- Compact 8-pin SOT-23 package
- Full-scale analog input range determined by an externally applied reference from +1V to VDD
- High accuracy with relative accuracy of ±1 LSB, differential nonlinearity of ±1 LSB, and offset error of ±0.5 LSB
- Small signal bandwidth of 4 MHz and spurious free dynamic range (SFDR) of 66 dB
Applications
- System diagnostics
- Battery-powered test equipment
- Solar-powered remote systems
- Receive signal strength indicators
- 4mA to 20mA powered remote data acquisition systems
- Signal processing and portable devices
Q & A
- What is the supply voltage range of the MAX1118EKA+T?
The MAX1118EKA+T operates from a supply voltage range of 2.7V to 5.5V.
- How much current does the MAX1118EKA+T consume at 100ksps?
The device consumes 135µA at a sampling rate of 100ksps.
- What is the resolution of the MAX1118EKA+T?
The MAX1118EKA+T has an 8-bit resolution.
- How many input channels does the MAX1118EKA+T have?
The device has two input channels.
- What is the operating temperature range of the MAX1118EKA+T?
The operating temperature range is from -40°C to 85°C.
- What is the full-scale analog input range of the MAX1118EKA+T?
The full-scale analog input range is determined by an externally applied reference ranging from +1V to VDD.
- Does the MAX1118EKA+T have an automatic shutdown mode?
Yes, the device has an automatic shutdown mode that reduces supply current to less than 1µA when not in use.
- What type of serial interface does the MAX1118EKA+T use?
The device uses a 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE.
- What is the package type of the MAX1118EKA+T?
The device is packaged in an 8-pin SOT-23 package.
- What are some common applications of the MAX1118EKA+T?
Common applications include system diagnostics, battery-powered test equipment, solar-powered remote systems, receive signal strength indicators, and 4mA to 20mA powered remote data acquisition systems.
