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參數(shù)資料
型號(hào)： EVAL-ADF4350EB1Z
廠商： Analog Devices Inc
文件頁數(shù)： 31/32頁
文件大小： 0K
描述： EVALUATION BOARD 1 FOR ADF4350
設(shè)計(jì)資源： Broadband Low EVM Direct Conversion Transmitter Using LO Divide-by-2 Modulator (CN0144)
標(biāo)準(zhǔn)包裝： 1
主要目的： 計(jì)時(shí)，頻率合成器
嵌入式： 否
已用 IC / 零件： ADF4350
主要屬性： 帶 VCO 的單路分?jǐn)?shù)-N 和整數(shù)-N PLL
次要屬性： USB 接口
已供物品： 板，纜線，CD
其它名稱： Q4437453
Q4841122
Q5095480
Q5242312
Q5416250
ADF4350
Rev. A | Page 8 of 32
Pin No.
Mnemonic
Description
22
RSET
Connecting a resistor between this pin and GND sets the charge pump output current. The nominal voltage
bias at the RSET pin is 0.55 V. The relationship between ICP and RSET is
SET
CP
R
25.5
I
=
where:
RSET = 5.1 kΩ
ICP = 5 mA
23
VCOM
Internal Compensation Node Biased at Half the Tuning Range. Decoupling capacitors to the ground plane
should be placed as close as possible to this pin.
24
VREF
Reference Voltage. Decoupling capacitors to the ground plane should be placed as close as possible to this pin.
25
LD
Lock Detect Output Pin. This pin outputs a logic high to indicate PLL lock. A logic low output indicates loss of PLL lock.
26
PDBRF
RF Power-Down. A logic low on this pin mutes the RF outputs. This function is also software controllable.
27
DGND
Digital Ground. Ground return path for DVDD.
28
DVDD
Digital Power Supply. This pin should be the same voltage as AVDD. Decoupling capacitors to the ground plane
should be placed as close as possible to this pin.
29
REFIN
Reference Input. This is a CMOS input with a nominal threshold of VDD/2 and a dc equivalent input resistance of
100 kΩ. This input can be driven from a TTL or CMOS crystal oscillator, or it can be ac-coupled.
30
MUXOUT
Multiplexer Output. This multiplexer output allows either the lock detect, the scaled RF, or the scaled reference
frequency to be accessed externally.
31
SDGND
Digital Sigma-Delta (Σ-Δ) Modulator Ground. Ground return path for the Σ-Δ modulator.
32
SDVDD
Power Supply Pin for the Digital Σ-Δ Modulator. Should be the same voltage as AVDD. Decoupling capacitors to
the ground plane are to be placed as close as possible to this pin.
33
EP
Exposed Pad.
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