308ksps ADC with DSP Interface and 78dB SINAD
DescriptionThe MAX121 is a complete, BiCMOS, serial-output, sampling 14-bit analog-to-digital converter (ADC) that combines an on-chip track/hold and a low-drift, low-noise, buried-zener voltage reference with fast conversion speed and low power consumption. The throughput rate is as high as 308k samples per second (ksps). The full-scale analog input range is ±5V.
The MAX121 utilizes the successive-approximation architecture with a high-speed DAC to achieve both fast conversion speeds and low-power operation. Operating with +5V and -12V or -15V power supplies, power consumption is only 210mW.
The MAX121 can be directly interfaced to the serial port of most popular digital-signal processors, and comes in space-saving 16-pin DIP and SO and smaller 20-pin SSOP packages. The MAX121 operates with TTL- and CMOS-compatible clocks in the frequency range from 1.1MHz to 5.5MHz. All logic inputs and outputs are TTL- and CMOS-compatible. This data sheet includes application notes for easy interface to TMS320, µPD77230, and ADSP2101 digital-signal processors, as well as µPs using the Motorola SPI and QSPI interface standards.
- 14-Bit Resolution
- 2.9µs Conversion Time/308ksps Throughput
- 400ns Acquisition Time
- Low Noise and Distortion
- 78dB SINAD
- -85dB THD
- ±5V Bipolar Input Range, Overvoltage Tolerant to ±15V
- 210mW Power Dissipation
- Continuous-Conversion Mode Available
- 30ppm/°C, -5V Internal Reference
- Interfaces to DSP Processors
- 16-Pin DIP and SO Packages, 20-Pin SSOP Package
- Audio and Telecom Processing
- Digital Signal Processing
- DSP Servo Control
- Spectrum Analysis
- Speech Recognition and Synthesis
|Input Chan.||Conv. Rate|
|ADC Architecture||Data Bus||Diff/S.E. Input||Internal VREF|
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C||Material Composition|