Overview
The MAX1290ACEI+T is a low-power, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This device features an 8-channel configuration with successive approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, and a high-speed, byte-wide parallel interface. It operates with a single +5V analog supply and can interface directly with a +2.7V to +5.5V digital supply via the VLOGIC pin. The MAX1290ACEI+T is housed in a 28-pin QSOP package, making it ideal for battery-powered and data-acquisition applications due to its excellent dynamic performance, low power consumption, and small footprint.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12-bit |
| Number of Channels | 8 (single-ended), 4 (pseudo-differential) |
| Analog Supply Voltage | 4.5V to 5.5V |
| Digital Supply Voltage | 2.7V to 5.5V |
| Sampling Rate | Up to 400ksps |
| Reference Voltage | 2.5V (internal) |
| Interface | Byte-wide parallel |
| Package Type | 28-pin QSOP |
| Operating Temperature | 0°C to +70°C |
| Power Consumption | 10mW (at 400ksps), 2µA (shutdown mode) |
| Linearity | ±0.5 LSB |
| Differential Nonlinearity | ±1 LSB |
| Offset Error | ±4 LSB |
| Gain Error | ±4 LSB |
Key Features
- 12-bit resolution with ±0.5 LSB linearity
- +5V single-supply operation with user-adjustable logic level (+2.7V to +5.5V)
- Internal +2.5V reference voltage
- Software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation
- Low power consumption: 2.5mA (400ksps), 1mA (100ksps), 400µA (10ksps), and 2µA (shutdown mode)
- Internal 6MHz full-power bandwidth track/hold
- Byte-wide parallel interface
- Fast wake-up time of 2µs
- Automatic power-down with two software-selectable power-down modes
Applications
- Data Acquisition Systems
- Data Logging
- Energy Management
- Industrial Control Systems
- Patient Monitoring
- Touch Screens
- Battery-powered devices
- Portable devices
Q & A
- What is the resolution of the MAX1290ACEI+T ADC?
The MAX1290ACEI+T has a 12-bit resolution.
- How many channels does the MAX1290ACEI+T support?
The device supports 8 single-ended channels or 4 pseudo-differential channels.
- What is the maximum sampling rate of the MAX1290ACEI+T?
The maximum sampling rate is up to 400ksps.
- What is the power consumption of the MAX1290ACEI+T at 400ksps?
The power consumption is 10mW at 400ksps.
- What is the operating temperature range of the MAX1290ACEI+T?
The operating temperature range is from 0°C to +70°C.
- Does the MAX1290ACEI+T have an internal reference voltage?
Yes, it has an internal +2.5V reference voltage.
- What types of analog inputs can the MAX1290ACEI+T configure?
The device can configure analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation.
- How does the MAX1290ACEI+T manage power consumption during idle periods?
The device features two software-selectable power-down modes to reduce power consumption between conversions.
- What is the wake-up time of the MAX1290ACEI+T from power-down mode?
The wake-up time is 2µs.
- In what package is the MAX1290ACEI+T available?
The device is available in a 28-pin QSOP package.
