AD8340ACPZ-WP Analog Devices Inc, AD8340ACPZ-WP Datasheet - Page 16

• Manufacturer Part Number: AD8340ACPZ-WP
• Description: IC MOD VECT 700-1000MHZ 24-LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD8340ACPZ-WP

• Function: Vector, Modulator
• Lo Frequency: 700MHz ~ 1GHz
• Rf Frequency: 700MHz ~ 1GHz
• P1db: 11dBm
• Noise Floor: -149dBm/Hz
• Current - Supply: 150mA
• Voltage - Supply: 4.75 V ~ 5.25 V
• Test Frequency: 880MHz
• Package / Case: 24-VFQFN, CSP Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD8340
EVALUATION BOARD
The evaluation board circuit schematic for the AD8340 is
shown in Figure 39.
The evaluation board is configured to be driven from a
single-ended 50 Ω source. Although the input of the AD8340
is differential, it may be driven single-ended with no loss of
performance.
The low-pass corner frequency of the baseband I and Q
channels can be reduced by installing capacitors in the C11 and
C12 positions. The low-pass corner frequency for either
channel is approximated by
On the evaluation board, the I and Q baseband circuits are
identical, so the following description applies equally to each.
The connections and circuit configuration for the Q baseband
inputs are described in Table 4.
f
3
dB
≈
C
EXTERNAL
45
kHz
×
+
10
0
5 .
nF
pF
Rev. B | Page 16 of 20
The baseband input of the AD8340 requires a differential
voltage drive. The evaluation board is set up to allow such a
drive by connecting the differential voltage source to QBBP and
QBBM. The common-mode voltage should be maintained at
approximately 0.5 V. For this configuration, Jumper W1 to
Jumper W4 should be removed.
The baseband input of the evaluation board can also be driven
with a single-ended voltage. In this case, a bias level is provided
to the unused input from Potentiometer R10 by installing either
W1 or W2.
Setting SW1 in Position B disables the AD8340 output
amplifier. With SW1 set to Position A, the output amplifier is
enabled and an external voltage signal, such as a pulse, can be
applied to the DSOP SMA connector to exercise the output
amplifier enable/disable function.