AD8315ACP-EVAL Analog Devices Inc, AD8315ACP-EVAL Datasheet - Page 2

• Manufacturer Part Number: AD8315ACP-EVAL
• Manufacturer: Analog Devices Inc

Specifications of AD8315ACP-EVAL

• Lead Free Status / Rohs Status: Not Compliant

EVAL-AD8315EB
Component
TP1, TP2
SW1
R1, R2
R3, R4, C2
C1
C4
LK1, LK2
Figure 2. Layout of Component Side (MSOP)
Function
Supply and Ground Vector Pins.
Device Enable. When in Position A, the ENBL pin is connected to VPOS and
the AD8315 is in operating mode. In Position B, the ENBL pin is grounded,
putting the device in power-down mode.
Input Interface. The 52.3 W resistor in Position R2 combines with the
AD8315’s internal input impedance to give a broadband input impedance
of around 50 W. A reactive match can be implemented by replacing R2 with
an inductor and R1 (0 W) with a capacitor. Note that the AD8315’s RF input
is internally ac-coupled.
Output Interface. R4 and C2 can be used to check the response of VAPC to
capacitive and resistive loading. R3, R4 can be used to reduce the slope of VAPC.
Power Supply Decoupling. The nominal supply decoupling consists of a
0.1 mF capacitor.
Filter Capacitor. The response time of VAPC can be modified by placing a
capacitor between FLTR (Pin 4) and ground.
Measurement Mode. A quasi-measurement mode can be implemented by
installing LK1 and LK2 (connecting an inverted VAPC to VSET) to yield the
nominal relationship between RFIN and VSET. In this mode, a large capacitor
(0.01 mF or greater) must be installed in C4.
Table I. Evaluation Board Configuration Options
–2–
Figure 3. Silkscreen of Component Side (MSOP)
Default Condition
Not Applicable
SW1 = A
R2 = 52.3 W (Size 0603)
R1 = 0 W (Size 0402)
R4 = C2 = Open (Size 0603)
R3 = 0 W (Size 0603)
C1 = 0.1 mF (Size 0603)
C4 = Open (Size 0603)
LK1, LK2 = Installed
REV. 0