AD9642:14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC)

AD9642: 14-Bit, 170 MSPS/210 MSPS/250 MSPS, 1.8 V Analog-to-Digital Converter (ADC)

AD9642 功能框图 The AD9642 is a 14-bit analog-to-digital converter (ADC) with sampling speeds of up to 250 MSPS. The AD9642 is designed to support communications applications, where low cost, small size, wide bandwidth, and versatility are desired.The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features wide bandwidth inputs that can support a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer (DCS) is provided to compensate for variations in the ADC clock duty cycle, allowing the converter to maintain excellent performance.The ADC output data is routed directly to the external 14-bit LVDS output port.Flexible power-down options allow significant power savings, when desired.Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.The AD9642 is available in a 32-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C. This product is protected by a U.S. patent.

AD9642 特性

SNR = 71.0 dBFS at 185 MHz AIN and 250 MSPS
SFDR = 83 dBc at 185 MHz AIN and 250 MSPS
−152.0 dBFS/Hz input noise at 200 MHz, −1 dBFS AIN,
250 MSPS
Total power consumption:
390 mW at 250 MSPS
1.8 V supply voltages
LVDS (ANSI-644 levels) outputs
Integer 1-to-8 input clock divider (625 MHz maximum input)
Sample rates of up to
250 MSPS
IF sampling frequencies of up to 350 MHz
Internal ADC voltage reference
Flexible analog input range
1.4 V p-p to 2.0 V p-p
(1.75 V p-p nominal)
See data sheet for additional features

AD9642 产品亮

Integrated 14-bit, 170 MSPS/210 MSPS/250 MSPS ADC.
Operation from a single 1.8 V supply and a separate digital output driver supply accommodating LVDS outputs.
Proprietary differential input maintains excellent SNR performance for input frequencies of up to 350 MHz.
3-pin, 1.8 V SPI port for register programming and readback.
Pin compatibility with the AD9634, allowing a simple migration from 14 bits to 12 bits, and with the AD6672.

AD9642 技术指标

Resolution (Bits): 14bit
# Chan: 1
Sample Rate: 250MSPS
Interface: LVDS
Analog Input Type: Diff-Bip,Diff-Uni
Ain Range: 1.75 V p-p
ADC Architecture: Pipelined
Pkg Type: CSP

AD9642 应用领域

通信
分集无线电系统
多模式数字接收机(3G)TD-SCDMA、WiMax、WCDMA CDMA2000、GSM、EDGE、LTE
I/Q解调系统
智能天线系统
通用软件无线电
超声设备
宽带数据应用

AD9642 建议配套产品

推荐AD9634使用的驱动放大器

对于差分RF/IF，推荐使用超低失真ADL5562。

针对直流耦合输入，推荐使用ADA4927-2或ADA4938-2。

推荐AD9634使用的IF数字可变增益放大器

针对数字通信系统中的全差分输入和输出DVGA，推荐使用ADL5202或AD8376。

推荐AD9634使用的时钟驱动器

如需低抖动性能，推荐使用AD9510 、 AD9511 、 AD9512 、 AD9513 、 AD9514 、 AD9515或AD9516、AD9517系列多路输出时钟之一。

如需低抖动性能和集成VCO，推荐使用AD9520或AD9522系列可选VCO频率器件之一。

如需低抖动性能及片内集成PLL和VCO，推荐使用AD9523 、 AD9523-1或AD9524。

推荐电源解决方案

欲选择电压调节器产品，请使用ADIsimPower。

欲选择电源监控器产品，请使用电源监控器参数搜索。

AD9642 芯片订购指

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs
AD9642BCPZ-170 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Tray, 490	$ 50.15	$ 42.63
AD9642BCPZ-210 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Tray, 490	$ 75.95	$ 64.56
AD9642BCPZ-250 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Tray, 490	$ 91.00	$ 77.35
AD9642BCPZRL7-170 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Reel, 1500	$ 50.15	$ 42.63
AD9642BCPZRL7-210 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Reel, 1500	$ 75.95	$ 64.56
AD9642BCPZRL7-250 产品状态: 量产	LFCSP:LEADFRM CHIP SCALE	32	工业	Reel, 1500	$ 91.00	$ 77.35