Overview
The MAX1225CTC+T, produced by Maxim Integrated (now part of Analog Devices Inc.), is a high-speed, low-power, 12-bit analog-to-digital converter (ADC). This device operates from a single supply voltage of +2.7V to +3.6V and features true-differential inputs, which provide better noise immunity, distortion improvements, and a wider dynamic range compared to single-ended inputs. The MAX1225 is designed for applications requiring fast conversion speeds, low power dissipation, and high AC and DC performance.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Sampling Rate | Up to 1.5 Msps | |
| Resolution | 12-bit | |
| Supply Voltage | +2.7V to +3.6V | |
| Power Dissipation | 18 mW (typ) | At 1.5 Msps |
| Shutdown Current | 1 µA (max) | In full power-down mode |
| Interface | High-Speed, SPI-Compatible, 3-Wire Serial Interface | |
| S/N + D Ratio | 69 dB at 525 kHz input frequency | |
| Full-Power Bandwidth | -3 dB point at 15 MHz | |
| Track-and-Hold Acquisition Time | 125 ns | |
| Aperture Delay | 5 ns | |
| Aperture Jitter | 30 ps | |
| External Clock Frequency | Up to 24.0 MHz | |
| Package | 12-pin TQFN | |
| Operating Temperature Range | -40°C to +85°C |
Key Features
- High-speed sampling rate of up to 1.5 Msps
- Low power dissipation of 18 mW (typ) at 1.5 Msps
- Low shutdown current of 1 µA (max) in full power-down mode
- High-speed, SPI-compatible, 3-wire serial interface
- True-differential inputs for improved noise immunity and dynamic range
- No pipeline delays
- Internal true-differential track/hold (T/H)
- External reference input
- Small 12-pin TQFN package
Applications
The MAX1225CTC+T is ideal for various applications requiring high-speed data acquisition, low power consumption, and high accuracy. These include:
- Industrial process control
- Motor control
- Base-station applications
- Data acquisition systems
- Communications systems
- Portable instruments
Q & A
- What is the sampling rate of the MAX1225CTC+T?
The MAX1225CTC+T has a sampling rate of up to 1.5 Msps.
- What is the power dissipation of the MAX1225CTC+T at 1.5 Msps?
The power dissipation is typically 18 mW at 1.5 Msps.
- What is the shutdown current in full power-down mode?
The shutdown current is 1 µA (max) in full power-down mode.
- What type of interface does the MAX1225CTC+T use?
The MAX1225CTC+T uses a high-speed, SPI-compatible, 3-wire serial interface.
- What is the S/N + D ratio at 525 kHz input frequency?
The S/N + D ratio is 69 dB at 525 kHz input frequency.
- What is the full-power bandwidth of the MAX1225CTC+T?
The full-power bandwidth is -3 dB point at 15 MHz.
- What is the track-and-hold acquisition time?
The track-and-hold acquisition time is 125 ns.
- What is the aperture delay?
The aperture delay is 5 ns.
- What is the operating temperature range of the MAX1225CTC+T?
The operating temperature range is -40°C to +85°C.
- In what package is the MAX1225CTC+T available?
The MAX1225CTC+T is available in a 12-pin TQFN package.
