rf2052 RF Micro Devices, rf2052 Datasheet - Page 3

• Manufacturer Part Number: rf2052
• Description: High Performance Wideband Rf Synthesizer/vco With Integrated Rf Mixer
• Manufacturer: RF Micro Devices

Note 1: The signal should be connected to this pin such that DC current cannot flow into or out of the chip, either by using an
AC coupling capacitor as part of lumped element matching network or by use of a transformer (see application circuit).
Note 2: DC current needs to flow from ANA_VDD into this pin, either through RF choke inductor or transformer (see application
circuit).
Prelim DS080513
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
EP
1
2
3
4
5
6
7
8
9
Exposed pad
ANA_VDD
ANA_DEC
DIG_VDD
Function
XTALIPN
XTALIPP
RESETB
RFOPN
RFOPP
LFILT1
LFILT2
LFILT3
SDATA
RFIPN
MODE
RFIPP
ENBL
INDN
REXT
SCLK
INDP
GND
ENX
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
Description
Device enable input. An RC low-pass filter could be used to reduce digital noise.
Low frequency VCO differential inductor. This is an RF pin and all normal layout precautions should be observed.
Low frequency VCO differential inductor. This is an RF pin and all normal layout precautions should be observed.
External bandgap bias resistor. This could be a sensitive low frequency noise injection point.
Analog supply decoupling capacitor. Apply RF decoupling to a good quality ground as close to the pin as possible.
Phase detector output. Low-frequency noise-sensitive node.
Loop filter op-amp output. Low-frequency noise-sensitive node.
VCO control input. Low-frequency noise-sensitive node.
Mode select pin. An RC low-pass filter can be used to reduce digital noise.
Reference crystal / reference oscillator input. Should be AC-coupled if an external reference is used.
Reference crystal / reference oscillator input. Should be AC-coupled to ground if an external reference is used.
Connect to ground.
Digital supply. Should be decoupled as close to the pin as possible.
Analog supply. Should be decoupled as close to the pin as possible.
Differential input. See note 1.
Differential input. See note 1.
Differential output. See note 2.
Differential output. See note 2.
Chip reset (active low). Connect to DIG_VDD if external reset is not required.
Serial interface select (active low). An RC low-pass filter could be used to reduce digital noise.
Serial interface clock. An RC low-pass filter could be used to reduce digital noise.
Serial interface data. An RC low-pass filter could be used to reduce digital noise.
Connect to ground. This is the ground reference for the circuit. All decoupling should be connected here through
low impedance paths.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at ([phone] or [e-mail].
Preliminary
RF2052
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