Overview
The MAX122ACWG+ is a 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This component is part of the MAX120/MAX122 family, which are complete, BiCMOS, sampling 12-bit ADCs. These converters combine an on-chip track/hold (T/H) and a low-drift voltage reference, offering fast conversion speeds and low-power consumption. The MAX122 is particularly noted for its 2.6µs conversion time, resulting in throughput rates of up to 333ksps.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 12-bit | |
| Conversion Time | 2.6µs | |
| Throughput Rate | Up to 333ksps | |
| Analog Input Voltage Range | -5V to +5V | |
| Clock Frequency Range | 0.1MHz to 5MHz | |
| Power Dissipation | 210mW | |
| Signal-to-Noise Plus Distortion (SINAD) | 70dB (min) | |
| Total Harmonic Distortion (THD) | -77dB (max) | |
| Input High Voltage (VIH) | 2.4V | |
| Input Low Voltage (VIL) | 0.8V |
Key Features
- 12-bit resolution with no missing codes over temperature
- Low-drift internal voltage reference (20ppm/°C)
- Fast conversion time of 2.6µs and throughput rate of up to 333ksps
- Low noise and distortion: 70dB (min) SINAD, -77dB (max) THD
- Low power dissipation of 210mW
- Separate track/hold control input
- Standard microprocessor interface with three-state data outputs compatible with 12-bit data buses
- Direct interface to first-in, first-out (FIFO) buffer to reduce microprocessor interrupt overhead
- All logic inputs and outputs are TTL/CMOS compatible
Applications
- Digital signal processing
- Audio and telecom processing
- Speech recognition and synthesis
- High-speed data acquisition
- Spectrum analysis
- Data logging systems
Q & A
- What is the resolution of the MAX122ACWG+ ADC?
The MAX122ACWG+ has a 12-bit resolution.
- What is the conversion time of the MAX122ACWG+?
The conversion time of the MAX122ACWG+ is 2.6µs.
- What is the throughput rate of the MAX122ACWG+?
The throughput rate of the MAX122ACWG+ is up to 333ksps.
- What is the analog input voltage range of the MAX122ACWG+?
The analog input voltage range is from -5V to +5V.
- What is the clock frequency range for the MAX122ACWG+?
The clock frequency range is from 0.1MHz to 5MHz.
- How much power does the MAX122ACWG+ consume?
The power dissipation is 210mW.
- What are the SINAD and THD specifications for the MAX122ACWG+?
The SINAD is 70dB (min), and the THD is -77dB (max).
- Is the MAX122ACWG+ compatible with TTL/CMOS logic?
- Can the MAX122ACWG+ interface directly with a FIFO buffer?
- What are some common applications of the MAX122ACWG+?
