AD8361ARM Analog Devices Inc, AD8361ARM Datasheet - Page 21

• Manufacturer Part Number: AD8361ARM
• Description: IC PWR DETECTOR 2.5GHZ 8-MSOP
• Manufacturer: Analog Devices Inc

Specifications of AD8361ARM

• Rf Type: Cellular, CDMA, W-CDMA
• Rohs Status: RoHS non-compliant
• Frequency: 100MHz ~ 2.5GHz
• Input Range: 0 ~ 700mV
• Accuracy: ±0.25dB
• Voltage - Supply: 2.7 V ~ 5.5 V
• Current - Supply: 1.1mA
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Frequency Range: 100MHz To 2.5GHz
• Supply Current: 1.1mA
• Supply Voltage Range: 2.7V To 5.5V
• Rf Ic Case Style: MSOP
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Pin Count: 8
• Screening Level: Industrial
• Package Type: MSOP
• Lead Free Status / Rohs Status: Not Compliant

EVALUATION BOARD
Figure 65 and Figure 68 show the schematic of the AD8361
evaluation board. Note that uninstalled components are drawn
in as dashed. The layout and silkscreen of the component side
are shown in Figure 66, Figure 67, Figure 69, and Figure 70. The
board is powered by a single supply in the 2.7 V to 5.5 V range.
The power supply is decoupled by 100 pF and 0.01 µF
capacitors. Additional decoupling, in the form of a series
resistor or inductor in R6, can also be added. Table 8 details the
various configuration options of the evaluation board.
Table 8. Evaluation Board Configuration Options
Component
TP1, TP2
SW1
SW2/SW3
C1, R2
C2, C3, R6
C5
C4, R5
Function
Ground and Supply Vector Pins.
Device Enable. When in Position A, the PWDN pin is connected to +V
down mode. In Position B, the PWDN pin is grounded, putting the device in operating mode.
Operating Mode. Selects either ground reference mode, internal reference mode or supply
reference mode. See Table 4 for more details.
Input Coupling. The 75 Ω resistor in Position R2 combines with the AD8361’s internal input
impedance to give a broadband input impedance of around 50 Ω. For more precise matching
at a particular frequency, R2 can be replaced by a different value (see Input Coupling and
Matching and Figure 43 through Figure 46).
Capacitor C1 ac couples the input signal and creates a high-pass input filter whose corner
frequency is equal to approximately 8 MHz. C1 can be increased for operation at lower
frequencies. If resistive attenuation is desired at the input, series resistor R1, which is
nominally 0 Ω, can be replaced by an appropriate value.
Power Supply Decoupling. The nominal supply decoupling of 0.01 µF and 100 pF. A series
inductor or small resistor can be placed in R6 for additional decoupling.
Filter Capacitor. The internal 50 pF averaging capacitor can be augmented by placing a
capacitance in C5.
Output Loading. Resistors and capacitors can be placed in C4 and R5 to load test V rms.
Rev. C | Page 21 of 24
S
and the AD8361 is in power-
Default Condition
Not Applicable
SW1 = B
SW2 = A, SW3 = B
(Ground Reference Mode)
R2 = 75 Ω (Size 0402)
C1 = 100 pF (Size 0402)
C2 = 0.01 µF (Size 0402)
C3 = 100 pF (Size 0402)
R6 = 0 Ω (Size 0402)
C5 = 1 nF (Size 0603)
C4 = R5 = Open (Size 0603)
AD8361