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Features

 3-wire (SPI compatible) 8-bit serial interface with built-in bias voltage generation and stand-by mode for reduced power consumption  DuNE™-enhanced UltraCMOS ® device  5-bit 32-state Digitally Tunable Capacitor  C = 1.38 – 5.90 pF (4.3:1 tuning ratio) in discrete 146 fF steps  RF power handling (up to 26 dBm, 6 VPK RF) and high linearity  High quality factor  Wide power supply range (2.3 to 3.6V) and low current consumption (typ. I DD = 30 µA @ 2.8V)  Optimized for shunt configuration, but can also be used in series configuration  Excellent 2 kV HBM ESD tolerance on all pins  Applications include:  Antenna tuning  Tunable filters  Phase shifters  Impedance matching Product Specification UltraCMOS® Digitally Tunable Capacitor (DTC) 100 - 3000 MHz PE64101

Table 1. Electrical Specifications @ 25°C, VDD = 2.8V

2.5 GHz

  1. DC path to ground at RF+ and RF– must be provided to achieve specified performance
  2. State change activated on falling edge of SEN following data word
  3. Between 50 Ω ports in series or shunt configuration using a pulsed RF input with 4620 vs period, 50% duty cycle, measured per 3GPPTS45.005
  4. In series configuration the greater RF pow er or higher RF voltage should be applied to RF+
  5. DTC operation above SRF is possible

Table 3. Operating Ranges1 Table 4. Absolute Maximum Ratings

  1. The DTC is active when STBY is low (set to 0) and in low-current
  2. Maximum CW power available from a 50 Ω source in shunt configuration
  3. Maximum CW power available from a 50 Ω source in series configuration
  4. RF+ to RF- and RF+ and/or RF- to ground. Cannot exceed 6 VPK or max
  5. I DD current typical value is based on VDD = 2.8V. Max IDD is based on

extended periods may reduce reliability. exceeding the specified rating. devices are immune to latch-up. Figure 3. Pin Configuration (Top View) Table 2. Pin Descriptions

1 SEN Serial Enable

2 GND Digital and RF Ground

3 SCLK Serial Interface Clock Input

4 VDD Power Voltage

5 GND Digital and RF Ground

6 RF- Negative RF Port 1

7 RF- Negative RF Port 1

8 GND Digital and RF Ground 3

9 RF+ Positive RF Port 2

10 RF+ Positive RF Port 2

13 GND Digital and RF Ground 3

12 SDAT Serial Interface Data Input

11 GND Digital and RF Ground

  1. Pins 9 and 10 must be tied together on PCB board to reduce
  2. Pin 2, 5, 8, 11 and 13 mu st be connected together on PCB

Figure 6. Measured Step Size vs State Figure 5. Measured Shunt S 11 (major states) Figure 8. Measured Shunt C vs Figure 9. Measured Series S 21 vs Frequency Figure 4. Measured Shunt C (@ 100 MHz) vs Figure 7. Measured Series S 11/S22 (major states)

100 MHz

470 MHz

582 MHz

862 MHz

Figure 11. Measured 2-Port Shunt S21 vs Figure 10. Measured Shunt Q vs Figure 12. Measured Self Resonance Figure 13. Measured Shunt Q vs State

698 MHz

1710 MHz

sequentially as they are programmed. programmed even if the state is not changed. Figure 14. Serial Interface Timing Diagram (oscilloscope view)

Table 5. 6-Bit Serial Programming Register Map Table 6. Serial Interface AC Characteristics Figure 15. Recommended Bus sharing

are provided for the state dependent parameters. until it reaches Self Resonant Frequency (SRF). due to the parasitic and biasing networks. Figure 16. Equivalent Circuit Model Schematic Table 7. Equivalent Circuit Model Parameters Table 8. Maximum Operating RF Voltage

Table 9. Equivalent Circuit Data

Figure 17. Evaluation Board Layout provide a ground plane for the transmission lines.

Figure 18. Evaluation Board Schematic

14 PIN HEADER

6 RF-

7 RF-

2 GND

4 VDD

3 SCLK

5 GND

8 GND

13 PADDLE

specifications for product development. Specifications and features may change in any manner without notice. of this information. Use shall be entirely at the user’s own risk. No patent rights or licenses to any circuits described in this datasheet are implied or granted to any third party. are trademarks of Peregrine Semiconductor Corp. For sales and contact information please visit www.psemi.com. Table 10. Ordering Information Figure 21. Tape and Reel Specifications