Overview
The MAX122ACNG+ is a 12-bit, sampling analog-to-digital converter (ADC) produced by Analog Devices Inc./Maxim Integrated. This BiCMOS device integrates an on-chip track/hold (T/H) and a low-drift voltage reference, offering fast conversion speeds and low-power consumption. The MAX122 is part of the MAX120/MAX122 family, which is designed for high-speed data acquisition and various signal processing applications.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Resolution | 12 bits | |
| Conversion Time | 2.6 µs | Results in 333 ksps throughput |
| Throughput Rate | Up to 333 ksps | |
| Analog Input Voltage Range | -5V to +5V | |
| Clock Frequency Range | 0.1 MHz to 5 MHz | |
| Internal Reference | 20 ppm/°C, -5V | |
| Signal-to-Noise Plus Distortion (SINAD) | 70 dB (min) | At 25°C |
| Total Harmonic Distortion (THD) | -77 dB (max) | At 25°C |
| Power Dissipation | 210 mW | |
| Package Type | Plastic Dual-In-Line, Narrow (0.3in) |
Key Features
- 12-bit resolution with no missing codes over temperature
- Low-drift internal voltage reference (20 ppm/°C, -5V)
- Fast conversion time of 2.6 µs and throughput rate of up to 333 ksps
- Low noise and distortion: 70 dB (min) SINAD, -77 dB (max) THD
- Low power dissipation of 210 mW
- 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 first-in, first-out (FIFO) buffer to reduce 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 MAX122ACNG+ ADC?
The MAX122ACNG+ has a 12-bit resolution.
- What is the conversion time and throughput rate of the MAX122ACNG+?
The conversion time is 2.6 µs, resulting in a throughput rate of up to 333 ksps.
- What is the analog input voltage range of the MAX122ACNG+?
The analog input voltage range is from -5V to +5V.
- What is the clock frequency range for the MAX122ACNG+?
The clock frequency range is from 0.1 MHz to 5 MHz.
- Does the MAX122ACNG+ have an internal voltage reference?
Yes, it has a low-drift internal voltage reference with a drift of 20 ppm/°C.
- What are the SINAD and THD specifications for the MAX122ACNG+?
The SINAD is 70 dB (min), and the THD is -77 dB (max) at 25°C.
- How much power does the MAX122ACNG+ consume?
The power dissipation is 210 mW.
- What type of package is the MAX122ACNG+ available in?
It is available in a Plastic Dual-In-Line, Narrow (0.3in) package.
- Can the MAX122ACNG+ interface directly with a microprocessor?
Yes, it employs a standard microprocessor interface with three-state data outputs compatible with 12-bit data buses.
- Can the MAX122ACNG+ reduce microprocessor interrupt overhead?
Yes, it can interface directly to a first-in, first-out (FIFO) buffer to reduce microprocessor interrupt overhead.
