EVAL-ADG904-R_15 Datasheet, PDF (1/8 Pages) Analog Devices – Evaluation Board for Wideband CMOS 4 1 Mux/SP4T

FEATURES
Evaluation board for the ADG904/ADG904-R
RF through for evaluation board calibration
INTRODUCTION
This evaluation board document describes the evaluation board
for the ADG904/ADG904-R wideband multiplexers.
The ADG904/ADG904-R are wideband, analog 4:1 multiplexers,
using a CMOS process to provide high isolation and low inser-
tion loss to 1 GHz. The ADG904 is an absorptive/matched mux
having 50 Ω terminated shunt legs, whereas the ADG904-R is a
reflective mux. These devices are designed such that the isolation
is high over the dc to1 GHz frequency range.
The ADG904/ADG904-R switch one of four inputs to a
common output, RFC, as determined by the 3-bit binary
address lines (A0, A1, and EN). A Logic 1 on the EN pin
disables the device.
The ADG904/ADG904-R have on-board CMOS control logic,
thus eliminating the need for external controlling circuitry. The
control inputs are CMOS compatible.
Complete information and specifications for the ADG904 and
ADG904-R are available in the ADG904/ADG904-R data sheet
available from Analog Devices, Inc., and should be consulted in
conjunction with this evaluation board document when using
the evaluation board.
Evaluation Board for Wideband
CMOS 4:1 Mux/SP4T
EVAL-ADG904/ADG904-R
GND VDD
J12
1
EN
J3
A0
J1
A1
J2
C1
J5
RF1
J7
RF3
H
LH
LH
L
K1
K3
K2
C2 _C3
U1
J6
RF2
J8
RF4
J4
RFC
EVAL-ADG904-R/ADG904
CAL
J9
J10
CAL
Figure 1. Evaluation Board (Top View)
POWER SUPPLIES
This evaluation board has one analog power supply input,
VDD, and a ground (GND). VDD can equal 1.65 V to 2.75 V.
The A0, A1, and EN control inputs are applied by the SMB
connectors; or, they can be tied high to VDD or low to GND by
using the links (K1 to K3) on the evaluation board. See Table 1
for details.
Table 1. Link Operation
A1 (K2)
A0 (K3)
X
X
L
L
L
H
H
L
H
H
EN (K1)
H
L
L
L
L
On Switch
None
RF1
RF2
RF3
RF4
Rev. A
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