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主要特征
应用/用途
Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) | 12 |
# Input Channels | 1 |
Sample Rate (Msps) (max) | 40 |
Data Bus Interface | µP/12 |
AC Specs (MHz) (@ fIN) | 15 |
SFDR (dBc) (min) | 70 |
ENOB (bits) (min) | 10.3 |
SINAD (dB) | 63.5 |
SNR (dB) | 66 |
THD (dB) | -69 |
DNL (±LSB) | 1 |
INL (±LSB) | 2 |
Package/Pins | LQFP/48 |
Budgetary Price (See Notes) | 8.87 |
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参量
Parametric specs for High-Speed ADCs (> 5Msps)
Resolution (bits) | 12 |
# Input Channels | 1 |
Sample Rate (Msps) (max) | 40 |
Data Bus Interface | µP/12 |
AC Specs (MHz) (@ fIN) | 15 |
SFDR (dBc) (min) | 70 |
ENOB (bits) (min) | 10.3 |
SINAD (dB) | 63.5 |
SNR (dB) | 66 |
THD (dB) | -69 |
DNL (±LSB) | 1 |
INL (±LSB) | 2 |
Package/Pins | LQFP/48 |
Budgetary Price (See Notes) | 8.87 |
主要特征
- Single 3.3V Power Supply
- 67dB SNR at fIN = 5MHz
- 66dB SNR at fIN = 15MHz
- Internal, 2.048V Precision Bandgap Reference
- Differential, Wideband Input T/H Amplifier
- Power-Down Modes
- 180mW (Reference Shutdown Mode)
- 10µW (Shutdown Mode)
- Space-Saving 48-Pin TQFP Package
应用/用途
- CCD像素处理
- 数据采集
- 中频与基带数字化
- 医疗超声成像
- 雷达
描述
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.
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.
Technical Docs
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com。