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AD9684BBPZRL7-500 View Datasheet(PDF) - Analog Devices

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AD9684BBPZRL7-500 Datasheet PDF : 64 Pages
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AD9684
The AD9684 has several functions that simplify the automatic
gain control (AGC) function in a communications receiver. The
programmable threshold detector allows monitoring of the
incoming signal power using the fast detect output bits of the
ADC. If the input signal level exceeds the programmable
threshold, the fast detect indicator goes high. Because this
threshold indicator has low latency, the user can quickly reduce
the system gain to avoid an overrange condition at the ADC
input. In addition to the fast detect outputs, the AD9684 also
offers signal monitoring capability. The signal monitoring block
provides additional information about the signal that the ADC
digitized.
The dual ADC output data is routed directly to the one external,
14-bit LVDS output port, supporting double data rate (DDR)
formatting. An external data clock and status bit are offered for
data capture flexibility.
The LVDS outputs have several configurations, depending on
the acceptable rate of the receiving logic device and the sampling
rate of the ADC. Multiple device synchronization is supported
through the SYNC± input pins.
The AD9684 has flexible power-down options that allow
significant power savings when desired. All of these features can
be programmed using a 1.8 V to 3.4 V capable 3-wire serial port
interface (SPI).
The AD9684 is available in a Pb-free, 196-ball ball grid array
(BGA) and is specified over the −40°C to +85°C industrial
temperature range. This product is protected by a U.S. patent.
PRODUCT HIGHLIGHTS
1. Wide full power bandwidth supports intermediate
frequency (IF) sampling of signals up to 2 GHz.
2. Buffered inputs with programmable input termination ease
filter design and implementation.
3. Four integrated wideband decimation filters and NCO
blocks supporting multiband receivers.
4. Flexible SPI controls various product features and functions
to meet specific system requirements.
5. Programmable fast overrange detection and signal
monitoring.
6. SYNC± input allows synchronization of multiple devices.
7. 12 mm × 12 mm, 196-ball BGA_ED.
Rev. 0 | Page 3 of 64
 

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