NS 公司的ADC16DV160是双路高速160MSPS模数转换器,采用带数字误差修正的差分流水线架构,片内有取样保持电路,具有极好的动态范围. ADC16DV160具有双数据速率LVDS输出端口,双电源1.8V和3.0V工作,输入范围可在2.4, 2.0, 1.5 和1.0VPP选择,主要用在多载波多标准基站接收器如MC-GSM/EDGE, CDMA2000, UMTS, LTE和WiMAX,,高IF取样接收器,多通路接收器,测试测量设备,通信设备和手提仪表.本文介绍了ADC16DV160主要特性和指标, 功能方框图, 低频输入变压器驱动电路, 高频输入变压器驱动电路和内部基准和去耦电路.

    The ADC16DV160 is a monolithic dual channel high performance CMOS analog-to-digital converter capable of converting analog input signals into 16-bit digital words at rates up to 160 Mega Samples Per Second (MSPS). This converter uses a differential, pipelined architecture with digital error correction and an on-chip sample-and-hold circuit to minimize power consumption and external component count while providing excellent dynamic performance. Automatic power-up calibration enables excellent dynamic performance and reduces part-to-part variation, and the ADC16DV160 can be  recalibrated at any time through the 3-wire Serial Peripheral Interface (SPI). An integrated low noise and stable voltage reference and differential reference buffer amplifier eases board level design. The on-chip duty cycle stabilizer with low additive jitter allows a wide range of input clock duty cycles without compromising dynamic performance. A unique sample-and-hold stage yields a full-power bandwidth of 1.4 GHz.

    The interface between the ADC16DV160 and a receiver block can be easily verified and optimized via fixed pattern generation and output clock position features. The digital data is provided via dual data rate LVDS outputs – making possible the 68-pin, 10 mm x 10 mm LLP package. The ADC16DV160 operates on dual power supplies of +1.8V and +3.0V with a power-down feature to reduce power consumption to very low levels while allowing fast recovery to full operation.

    ADC16DV160主要特性:

    ■ Low power consumption

    ■ On-chip precision reference and sample-and-hold circuit

    ■ On-chip automatic calibration during power-up

    ■ Dual data rate LVDS output port

    ■ Dual Supplies: 1.8V and 3.0V operation

    ■ Selectable input range: 2.4, 2.0, 1.5 and 1.0VPP

    ■ Sampling edge flipping with clock divider by 2 option

    ■ Integer clock divider by 1 or 2

    ■ On-chip low jitter duty-cycle stabilizer

    ■ Power-down and sleep modes

    ■ Output fixed pattern generation

    ■ Output clock position adjustment

    ■ 3-wire SPI

    ■ Offset binary or 2s complement data format

    ■ 68-pin LLP package (10x10x0.8, 0.5mm pin-pitch)

    ADC16DV160主要指标:

    ■ Resolution 16 Bits

    ■ Conversion Rate 160 MSPS

    ■ SNR

    (@FIN = 30 MHz)

    (@FIN = 197 MHz)

    78.5 dBFS (typ)

    76.3 dBFS (typ)

    ■ SFDR

    (@FIN = 30 MHz)

    (@FIN = 197 MHz)

    95 dBFS (typ)

    91.2 dBFS (typ)

    ■ Full Power Bandwidth 1.4 GHz (typ)

    ■ Power Consumption

    -Core per channel

    -LVDS Driver

    -Total

    591 mW (typ)

    118 mW (typ)

    1.3W (typ)

    ■ Operating Temperature Range -40℃~ 85℃

    ADC16DV160应用:

    ■ Multi-carrier, Multi-standard Base Station Receivers

    -MC-GSM/EDGE, CDMA2000, UMTS, LTE and WiMAX

    ■ High IF Sampling Receivers

    ■ Diversity Channel Receivers

    ■ Test and Measurement Equipment

    ■ Communications Instrumentation

    ■ Portable Instrumentation

图2.ADC16DV160高频输入变压器驱动电路

图3.ADC16DV160内部基准和去耦电路图

图4.ADC16DV160 评估板外形图