13-10
AN0010
13
Copyright 1997-2002 RF Micro Devices, Inc.
NDA Series HBT Distributed Amplifiers
1. What is provided with the evaluation board assembly?
a. An NDA part mounted on a PCB with connectors.
b. Biasing resistor RCC1 (120Ω).
c. S-parameter data (provided with all evaluation boards).
Note: The s-parameter data gain results include device performance as well as evaluation board and connector
loss variations. The insertion losses of the evaluation board and connectors are as follows.
1. 1GHz to 4GHz=-0.06dB
2. 5GHz to 9GHz=-0.22dB
3. 10GHz to 14GHz=-0.50dB
4. 15GHz to 20GHz=-1.08dB
2. Bill of Materials for NDA Series evaluation board assembly:
a. NDA series component.
b. 120
Ω±5% surface-mount resistor.
c. Two (2) SMA connectors.
d. One (1) PC board material, Rogers Corp. part number: TMM-6, 20mil thick or equivalent.
e. 60/40 tin-lead solder.
3. Figure of Evaluation Board with external biasing
Note: Biasing components are not supplied with evaluation board assembly.
SMA
Connector (2)
PC Board (1)
Attach AGC voltage
to this point
RFMD
DUT
INPUT
OUTPUT
V
C1
V
C2
Figure 3. NDA-Series Evaluation Board
L Choke
C Block
R
CC
120
Ω
V
CC
Output
C Block
Input
V
CC1
C1
1
µF
RFMD
DUT
INPUT
OUTPUT
V
C1
V
C2
Figure 4. NDA-Series Evaluation Board with External Biasing
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