MAX1421：12位、40Msps、3.3V、低功耗ADC，内置电压基准
The MAX1421 is a 3.3V, 12-bit analog-to-digital converter (ADC), featuring a fully-differential input, pipelined, 12-stage ADC architecture with wideband track-and-hold (T/H) and digital error correction incorporating a fully-differential signal path. The MAX1421 is optimized for low-power, high-dynamic performance applications in imaging and digital communications. The converter operates from a single 3.3V supply, consuming only 188mW while delivering a typical signal-to-noise ratio (SNR) of 66dB at an input frequency of 15MHz and a sampling frequency of 40Msps. The fully-differential input stage has a small signal -3dB bandwidth of 400MHz and may be operated with single-ended inputs. An internal 2.048V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure accommodates an internal or externally applied buffered or unbuffered reference for applications requiring increased accuracy or a different input voltage range. In addition to low operating power, the MAX1421 features two power-down modes, a reference power-down and a shutdown mode. In reference power-down, the internal bandgap reference is deactivated, resulting in a typical 2mA supply current reduction. For idle periods, a full shutdown mode is available to maximize power savings. The MAX1421 provides parallel, offset binary, CMOS-compatible three-state outputs. The MAX1421 is available in a 7mm x 7mm, 48-pin TQFP package, and is specified over the commercial (0°C to +70°C) and the extended industrial (-40°C to +85°C) temperature ranges. Pin-compatible higher- and lower-speed versions of the MAX1421 are also available. Please refer to the MAX1420 data sheet for a frequency of 60Msps and the MAX1422 data sheet for a frequency of 20Msps.
关键特性
| MAX1421：功能框图 应用
|
数据手册DataSheet
| 语言 | 下载文件 | 备注 |
|---|---|---|
| 英文 | MAX1421.pdf | Rev 1; 06/2006 |
关键参数
| Part Number | Input Chan. | Resolution (bits) | Sample Rate (Msps) | AC Specs (MHz) | SFDR (dBc) | ENOB (bits) | SINAD (dB) | SNR (dB) | THD (dB) | DNL (±LSB) | INL (±LSB) | Full Pwr. BW (MHz) | ICC (mA) | Data Bus Interface | Package/Pins | Budgetary Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| max ≥ | @ fIN | min | min | min | typ | See Notes | ||||||||||
| MAX1421 | 1 | 12 | 40 | 15 | 70 | 10.3 | 63.5 | 66 | -69 | 1 | 2 | 150 | 57.5 | µP/12 | LQFP/48 | $6.94 @1k |
技术资料
- Crunching FFTs with Microsoft Excel
- Dynamic Testing of High-Speed ADCs, Part 2
- Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 1
- Pipeline ADCs Come of Age
质量和环境数据
订购型号
| 型号 | 状况 | 推荐替代产品 | 封装 | 温度 | RoHS/无铅 |
|---|---|---|---|---|---|
| MAX1421CCM+D | 停止供货 | LQFP；48引脚 | -40°C至+85°C | 参考数据资料 | |
| MAX1421CCM+TD | 停止供货 | LQFP； | -40°C至+85°C | 参考数据资料 | |
| MAX1421CCM-D | 停止供货 | LQFP； | -40°C至+85°C | 参考数据资料 | |
| MAX1421CCM-TD | 停止供货 | LQFP； | -40°C至+85°C | 参考数据资料 | |
| MAX1421ECM+D | 生产中 | LQFP,；48引脚；82.8mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1421ECM+TD | 生产中 | LQFP,；48引脚；82.8mm² | -40°C至+85°C | RoHS/无铅：无铅 | |
| MAX1421ECM-D | 停止供货 | MAX1421ECM+ | LQFP,；48引脚；82.8mm² | -40°C至+85°C | RoHS/无铅：否 |
| MAX1421ECM-TD | 停止供货 | MAX1421ECM+ | LQFP；48引脚 | -40°C至+85°C | 参考数据资料 |
- MAX1421.pdf MAX1421
- MAX1421.pdf MAX1421
- MAX1421.pdf MAX1421
- Crunching FFTs with Microsoft Excel MAX1449
- Dynamic Testing of High-Speed ADCs, Part 2 MAX1449
- Defining and Testing Dynamic Parameters in High-Speed ADCs, Part 1 MAX1449
- Pipeline ADCs Come of Age MAX1422
- MAX1421.pdf MAX1421
- MAX1421.pdf MAX1421
