• 简体中文
• English

MAX121：308ksps ADC with DSP Interface and 78dB SINAD

The 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.

Key Features 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

MAX121: Functional Diagram Applications/Uses Audio and Telecom Processing Digital Signal Processing DSP Servo Control Spectrum Analysis Speech Recognition and Synthesis

DataSheet

Parametrics

Design kits & evaluation modules

• MAX121EVKIT

Quality and Environmental Data

• MAX121.pdf

Related Products

• MAX11101：14-Bit, +5V, 200ksps ADC with 10µA Shutdown
• MAX1145：14-Bit ADCs, 150ksps, 3.3V Single Supply
• MAX1062：14-Bit, +5V, 200ksps ADC with 10µA Shutdown
• MAX1142：14-Bit ADC, 200ksps, +5V Single-Supply with Reference
• MAX122：500ksps, Sampling, 12-Bit ADC with Track/Hold and Reference
• MAX120：500ksps, Sampling, 12-Bit ADC with Track/Hold and Reference

Ordering Information