CV111-3APCB75 TriQuint, CV111-3APCB75 Datasheet - Page 2

• Manufacturer Part Number: CV111-3APCB75
• Description: WiFi / 802.11 Modules & Development Tools 1900-3200MHz RF Brd 75MHz IF
• Manufacturer: TriQuint

Specifications of CV111-3APCB75

• Wireless Frequency: 1.9 GHz to 2.2 GHz
• For Use With/related Products: CV111-3A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1067424

RF OUT
MIXRF
CV111-3A: The application circuit can be broken up into four main
functions as denoted in the colored dotted areas above: RF/IF
diplexing (purple; this is only used with the cellular-band CV
products), amplifier matching (green), filtering (red), and dc biasing
(blue). There are various placeholders for chip components in the
circuit schematic so that a common PCB can be used for all WJ
single-branch converters. Additional placeholders for other optional
functions such as filtering are also included.
RF / IF Amplifier Matching:
matching element for optimal gain and input return loss performance.
The IF amplifier requires matching elements to optimize the
performance of the amplifier to the desired IF center frequency. Since
IF bandwidths are typically on the order of 5 to 10%, a simple two
element matching network, in the form of either a high-pass or low-
pass filter structure, is sufficient to match the MMIC IF amplifier over
these narrow bandwidths. Proper component values for other IF center
frequencies can be found in the IF Amplifier Matching Table or by e-
mailing to [e-mail].
TriQuint Semiconductor, Inc • Phone 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail] • Web site: www.TriQuint.com
GND
GND
GND
N/C
N/C
1
2
3
4
5
6
7
RF
RF Amp
28
8
RF Bandpass Filter /
27
9
Attenuator Pad
CV111-3A
UMTS-band High Linearity Downconverter
26
10
25
11
(used for cellular versions only)
LO
IF
24
12
Frequency (MHz)
LO Driver Amp
Device Architecture / Application Circuit Information
RF / IF Diplexer
RF Amp Bias
23
13
R8 (ohms)
C17 (pF)
IF Amp
L7 (nH)
L4 (nH)
22
14
21
20
19
18
17
16
15
IF OUT
GND
N/C
GND
BIAS
GND
LO IN
The RF amplifier requires a shunt
RF Amp Matching
LO Amp / MMIC Mixer
470
470
4.7
40
24
RF Amplifier
IF Amplifier
CV111-3A
RF Filter
Stage
430
240
IF Amp Matching
4.7
50
15
IF Amplifier Matching
150
330
3.3
75
22
LO Amp Bias
Typical Downconverter Performance Chain Analysis
IF Amp Bias
100
150
330
Gain
2.2
(dB)
18.5
10
-8.5
12
-2
LO Amp Bias
Cumulative Performance
125
120
330
Output
8.2
2.2
RF Bandpass Filtering:
achieve the best noise figure performance with the downconverter.
The bandpass filter, implemented with a SAW filter on the
application circuit, allows for the suppression of noise from the
image frequency. It is permissible to not use a filter and use a 2 dB
pad with R6, R7, and R16 instead with slightly degraded noise
figure performance.
External Diplexer:
products.
CV111-3A; therefore the components shown in the diplexer section
should be loaded as follows: C2 = C14 = 0 Ω.
DC biasing:
amplifiers in the converter. R1 sets the operating current for the last
stage of the LO amplifier and is chosen to optimize the mixer LO
drive level. Proper RF chokes and bypass capacitors are chosen for
proper amplifier biasing at the intended frequency of operation. The
“+5 V” dc bias should be supplied directly from a voltage regulator.
(dBm)
P1dB
21
---
23
8
130
120
330
6.8
2.2
Output
(dBm)
IP3
41
23
41
---
The mixer performs the diplexing internally for the
Printed Circuit Board Material:
.014” FR-4, 4 layers, .062” total thickness
155
100
330
5.6
2.2
DC bias must be provided for the RF, LO and IF
(dB)
NF
3.5
2.0
9.1
2.1
Specifications and information are subject to change without notice
169
330
5.0
2.2
82
This is only used with the cellular-band CV
Current
(mA)
140
140
360
---
80
Bandpass filtering is recommended to
180
330
4.7
2.2
82
210
220
Gain
(dB)
3.3
2.2
82
1.5
12
10
20
20
Cumulative Performance
240
220
3.9
2.2
Output
56
(dBm)
P1dB
21.0
19.0
20.7
20.7
6.1
Page 2 of 7 January 2009
Output
(dBm)
41.0
39.0
22.2
37.9
37.9
IP3
(dB)
NF
3.5
3.6
4.8
5.4
5.4