 The MAX109, 2.2Gsps, 8-bit, analog-to-digital converter
(ADC) enables the accurate digitizing of analog signals
with frequencies up to 2.5GHz. Fabricated on an
advanced SiGe process, the MAX109 integrates a highperformance
track/hold (T/H) amplifier, a quantizer, and
a 1:4 demultiplexer on a single monolithic die. The
MAX109 also features adjustable offset, full-scale voltage
(via REFIN), and sampling instance allowing multiple
ADCs to be interleaved in time.
The innovative design of the internal T/H amplifier,
which has a wide 2.8GHz full-power bandwidth,
enables a flat-frequency response through the second
Nyquist region. This results in excellent ENOB performance
of 6.9 bits. A fully differential comparator design
and decoding circuitry reduce out-of-sequence code
errors (thermometer bubbles or sparkle codes) and
provide excellent metastability performance (1014 clock
cycles). This design guarantees no missing codes.
The analog input is designed for both differential and
single-ended use with a 500mVP-P input-voltage range.
The output data is in standard LVDS format, and is
demultiplexed by an internal 1:4 demultiplexer. The
LVDS outputs operate from a supply-voltage range of
3V to 3.6V for compatibility with single 3V-reference
systems. Control inputs are provided for interleaving
additional MAX109 devices to increase the effective
system-sampling rate.
The MAX109 is offered in a 256-pin Super Ball-Grid Array
(SBGA) package and is specified over the extended
industrial temperature range (-40°C to +85°C).
Applications
Radar Warning Receivers (RWR)
Light Detection and Ranging (LIDAR)
Digital RF/IF Signal Processing
Electronic Warfare (EW) Systems
High-Speed Data-Acquisition Systems
Digital Oscilloscopes
High-Energy Physics Instrumentation
ATE Systems
MAX109 2.2Gsps、8位、模数转换器(ADC)可将频率高达2.5GHz的模拟信号精确数字化。MAX109采用先进的SiGe工艺制造，在单芯片上集成采样/保持(T/H)放大器、量化器和1:4解复用器。MAX109还提供可调整的失调、满偏电压(通过REFIN)以及采样位置，可实现多个ADC交错工作。
内部采样/保持放大器采用创新性的设计，具有极宽的2.8GHz全功率带宽，从而在整个第二奈奎斯特区域内具有平坦的频率响应。这样便保证具有6.9位ENOB的优异性能。全差分比较器设计和可降低序列外误码电路(温度计泡沫或闪烁码)并提供优异的亚稳态性能(1014时钟周期)。这种设计可以保证无误码。
则 模拟输入具有差分和单端两种模式，具有500mVP-P输入电压范围。输出数据为标准LVDS格式，由内部1:4解复用器解复用。LVDS输出的工作电压范围为3V至3.6V，兼容3V基准单电源系统。器件还提供控制输入以控制其他MAX109交错工作，从而提高系统的有效采样速率。
MAX109采用256引脚超级球栅阵列(SBGA)封装，额定工作于扩展工业级温度范围(-40°C至+85°C)。
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软件简介