Document
Product Description
PE64909 is a DuNE™ technology-enhanced Digitally Tunable Capacitor (DTC) based on Peregrine’s UltraCMOS® technology. This highly versatile product supports a wide variety of tuning circuit topologies with emphasis on impedance matching and aperture tuning applications.
PE64909 offers high RF power handling and ruggedness while meeting challenging harmonic and linearity requirements enabled by Peregrine’s HaRP™ technology. The device is controlled through the widely supported 3-wire (SPI compatible) interface. All decoding and biasing is integrated on-chip and no external bypassing or filtering components are required.
DuNE™ devices feature ease of use while delivering superior RF performance in the form of tuning accuracy, monotonicity, tuning ratio, power handling, size, and quality factor. With built-in bias voltage generation and ESD protection, DTC products provide a monolithically integrated tuning solution for demanding RF applications.
Product Specification
PE64909
UltraCMOS® Digitally Tunable Capacitor (DTC) 100-3000 MHz
Features
3-wire (SPI compatible) serial interface
with built-in bias voltage generation and ESD protection
DuNE™ technology enhanced 4-bit 16-state Digitally Tunable Capacitor Shunt configuration C = 0.6 pF to 2.35 pF
(3.9:1 tuning ratio) in discrete 117 fF steps
High RF power handling (30 Vpk RF) and
linearity
Wide power supply range (2.3 to 4.8V)
and low current consumption (typ. 140 μA at 2.75V)
High ESD tolerance of 2kV HBM
on all pins
Applications include:
Tunable antennas Tunable matching networks Tunable filter networks Phase shifters
Figure 1. Functional Diagram
Figure 2. Package Type 10-lead 2 x 2 x 0.55 mm QFN
Document No. DOC-86359-1 │ www.psemi.com
71-0090-01
©2017 Peregrine Semiconductor Corp. All rights reserved. Page 1 of 11
PE64909
Product Specification
Table 1. Electrical Specifications @ 25 °C, VDD = 2.75V (In shunt configuration, RF- connected to GND)
Parameter
Condition
Min Typ Max Unit
Operating frequency
Minimum capacitance (Cmin)
Maximum capacitance (Cmax)
Tuning ratio
State 0000, 100 MHz State 1111, 100 MHz Cmax/Cmin, 100 MHz
100 3000 MHz 0.54 0.60 0.66 pF
1.88 2.35 2.82 3.9:1
pF
Step size
4 bits (16 states), 100 MHz
Quality factor at Cmin1
698 to 960 MHz, with LS removed 1710 to 2170 MHz, with LS removed
Quality factor at Cmax1 Self resonant frequency
698 to 960 MHz, with LS removed 1710 to 2170 MHz, with LS removed
State 0000 State 1111
Harmonics2 IMD3
2fo, 3fo: 698 to 915 MHz; PIN = +34 dBm, 50Ω 2fo, 3fo: 1710 to 1910 MHz; PIN = +32 dBm, 50Ω
Bands I,II,V/VIII, +20 dBm CW @ TX freq, -15 dBm CW @ 2TX-RX freq, 50Ω
Third order intercept point Shunt configuration derived from IMD3 spec
(IP3)
IP3 = (2PTX + Pblock - IMD3) / 2
Switching time3,4
State change to 10/90% delta capacitance between any two states
0.117
pF
40 40
29 13
9.1 3.7
GHz
-36 dBm -36 dBm
-105 dBm
65 dBm 12 μs
Start-up time3 Wake-up time3,4
Time from VDD within specification to all performances within specification State change from Standby mode to RF state to all performances within specification
70 μs 70 μs
Notes: 1. Q for a Shunt DTC based on a Series RLC equivalent circuit Q = XC/R = (X-XL)/R, where X = XL+XC , XL = 2*pi*f*L, XC = -1/(2*pi*f*C), which is equal to removing the effect of parasitic inductance LS
2. In Shunt between 50 Ω ports. Pulsed RF input with 4620 μS period, 50% duty cycle, measured per 3GPP TS 45.005 3. DC path to ground at RF– must be provided to achieve specified performance 4. State change activated on falling edge of SEN following data word
©2017 Peregrine Semiconductor Corp. All rights reserved. Page 2 of 11
Document No. DOC-86359-1 │ UltraCMOS® RFIC Solutions
PE64909
Product Specification
Figure 3. Pin Configuration (Top View)
Table 2. Pin Descriptions
Pin # Pin Name
Description
1 RF- Negative RF port1
2 RF- Negative RF port1
3
GND
Ground2
4 VDD Power supply pin
5
SCL
Serial interface clock input
6
SEN
Serial interface latch enable input
7
SDA
Serial interface data input
8 RF+ Positive RF port1
9 RF+ Positive RF port1
10
GND
Ground2
Pad
GND
Exposed pad: ground for proper operation2
Notes:
1. For optimal performance, recommend tying pins 1-2 and pins 8-9 together on PCB 2. For optimal performance, recommend tying pins 3, 10, and exposed ground pad together on PCB
Moisture Sensitivity Level
The Moisture Sensitivity Level rating for the PE64909 in the 10-lead 2x2 mm QFN package is MSL1.
Table 3. Operating Ranges
Parameter
Symbol Min Typ Max Unit
Supply voltage
Supply current (VDD = 2.75V)
Standby current (VDD = 2.75V)
Digital input high
Digital input low
RF input power (50Ω)1 698 to 915 MHz 1710 to 1910 MHz
VDD 2.30 2.75 4.80 V IDD 140 200 μA IDD 25 μA VIH 1.2 1.8 3.1 V VIL 0 0 0.57 V
+34 dBm +32 dBm
Peak operating RF voltage2 VP to VM VP to RFGND
3.