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AD9627BCPZ-125:  12-Bit, 80 MSPS/105 MSPS/125 MSPS/150 MSPS, 1.8 V Dual Analog-to-Digital Converter

The AD9627 is a dual, 12-bit, 80 MSPS/105 MSPS/125 MSPS/ 150 MSPS analog-to-digital converter (ADC). The AD9627 is designed to support communications applications where low cost, small size and versatility are desired.

The dual ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth differential sample-and-hold analog input amplifiers supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations. A duty cycle stabilizer is provided to compensate for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.

The AD9627 has several functions that simplify the automatic gain control (AGC) function in the system receiver. The fast detect feature allows fast overrange detection by outputting four bits of input level information with very short latency.

In addition, the programmable threshold detector allows monitoring of the incoming signal power, using the four fast detect bits of the ADC with very low latency. If the input signal level exceeds the programmable threshold, the coarse upper threshold indicator goes high. Because this threshold indicator has very low latency, the user can quickly turn down the system gain to avoid an overrange condition.

The second AGC-related function is the signal monitor. This block allows the user to monitor the composite magnitude of the incoming signal, which aids in setting the gain to optimize the dynamic range of the overall system.

The ADC output data can be routed directly to the two external 12-bit output ports. These outputs can be set from 1.8 V to 3.3 V CMOS or 1.8 V LVDS. Flexible power-down options allow significant power savings, when desired.

Programming for setup and control is accomplished using a 3-bit SPI-compatible serial interface.

The AD9627 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

产品焦点 Product Highlights

1. Integrated dual, 12-bit, 80 MSPS/105 MSPS/125 MSPS/ 150 MSPS ADC.
2. Fast overrange detect and signal monitor with serial output.
3. Signal monitor block with dedicated serial output mode.
4. Proprietary differential input that maintains excellent SNR performance for input frequencies up to 450 MHz.
5. Operation from a single 1.8 V supply and a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
6. Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, test modes, and voltage reference mode. 7. Pin compatibility with the AD9640, AD9627-11, and AD9600 for a simple migration from 12 bits to 14 bits, 11 bits, or 10 bits.

产品应用领域 Applications

• Communications
• Diversity radio systems
• Multimode digital receivers (3G)
  GSM, EDGE, WCDMA,
  CDMA2000, WiMAX, TD-SCDMA I/Q demodulation systems
• Smart antenna systems
• General-purpose software radios
• Broadband data applications

AD9627BCPZ-125 特点

• SNR = 69.4 dBc (70.4 dBFS) to 70 MHz @ 125 MSPS
• SFDR = 85 dBc to 70 MHz @ 125 MSPS
• Low power: 750 mW @ 125 MSPS
• SNR = 69.2 dBc (70.2 dBFS) to 70 MHz @ 150 MSPS
• SFDR = 84 dBc to 70 MHz @ 150 MSPS
• Low power: 820 mW @ 150 MSPS
• 1.8 V analog supply operation
• 1.8 V to 3.3 V CMOS output supply or 1.8 V LVDS output supply
• Integer 1-to-8 input clock divider
• IF sampling frequencies to 450 MHz
• Internal ADC voltage reference
• Integrated ADC sample-and-hold inputs

AD9627BCPZ-125 功能框图

AD9627 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD9627-125EBZ	量产	评估板	64	商业
AD9627-150EBZ	量产	评估板	64	商业
AD9627BCPZ-105	量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	商业
AD9627BCPZ-125	量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	商业
AD9627BCPZ-150	量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	商业
AD9627BCPZ-80	量产	64 ld LFCSP (9x9mm, 7.10 exposed pad)	64	商业

AD9627BCPZ-125 应用技术支持与电子电路设计开发资源下载

1. AD7781 数据手册DataSheet下载 . pdf
2. Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
3. ADC模数转换器选型指南 . pdf