Overview
The MAX122BEWG+ is a high-performance, 12-bit analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This BiCMOS, sampling ADC combines an on-chip track/hold (T/H) and a low-drift voltage reference, offering fast conversion speeds and low-power consumption. The device is designed for various high-speed data acquisition and processing applications, making it a versatile component in digital signal processing, audio and telecom processing, and more.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 12 bits |
| Conversion Time | 2.6µs (MAX122) |
| Throughput Rate | Up to 333ksps (MAX122) |
| Analog Input Range | -5V to +5V |
| Supply Voltage | 5V; 10.8V to 15.75V |
| Operating Temperature | -40°C to +85°C |
| Number of Channels | 1 |
| Clock Frequency Range | 0.1MHz to 5MHz (MAX122) |
| Power Dissipation | 210mW |
| Input Current (VAIN = +5V) | Approximately 2.5 mA |
| Input Capacitance | 10 pF |
| Full-Power Input Bandwidth | 1.5 MHz |
Key Features
- 12-bit resolution with no missing codes over temperature
- Low-drift internal voltage reference (20ppm/°C)
- Fast conversion time and high throughput rates
- Low noise and distortion: 70dB (min) SINAD, -77dB (max) THD
- Low power dissipation: 210mW
- Separate track/hold control input
- Standard microprocessor interface with three-state data outputs compatible with 12-bit data buses
- TTL/CMOS compatible logic inputs and outputs
- Direct interface to FIFO buffer, reducing microprocessor interrupt overhead
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 MAX122BEWG+ ADC?
The MAX122BEWG+ has a 12-bit resolution. - What is the conversion time of the MAX122?
The MAX122 has a conversion time of 2.6µs. - What is the throughput rate of the MAX122?
The throughput rate of the MAX122 is up to 333ksps. - What is the analog input voltage range of the MAX122?
The analog input voltage range is -5V to +5V. - What is the operating temperature range of the MAX122?
The operating temperature range is -40°C to +85°C. - Is the MAX122 compatible with TTL/CMOS logic?
Yes, the MAX122 is TTL/CMOS compatible. - Can the MAX122 interface directly with a FIFO buffer?
Yes, the MAX122 can interface directly with a FIFO buffer, reducing microprocessor interrupt overhead. - What is the power dissipation of the MAX122?
The power dissipation is 210mW. - What is the full-power input bandwidth of the MAX122?
The full-power input bandwidth is 1.5 MHz. - Does the MAX122 require external components?
The only external components needed are decoupling capacitors for the power-supply and reference voltages.
