CV110-1APCB75 TriQuint, CV110-1APCB75 Datasheet - Page 2

• Manufacturer Part Number: CV110-1APCB75
• Description: WiFi / 802.11 Modules & Development Tools 800-915MHz RF Brd 75MHz IF
• Manufacturer: TriQuint

Specifications of CV110-1APCB75

• Wireless Frequency: 800 MHz to 915 MHz
• For Use With/related Products: CV110-1A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1067427

CV110-1A: The application circuit can be broken up into four main
functions as denoted in the colored dotted areas above: RF/IF diplexing
(purple), 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].
RF Bandpass Filtering:
the image frequencies and achieve the best noise figure performance
TriQuint Semiconductor, Inc • Phone 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail] • Web site: www.TriQuint.com
IF THRU
RF OUT
RF/IF
GND
GND
GND
N/C
1
2
3
4
5
6
7
RF/IF
RF Amp
RF Bandpass Filter /
28
8
Attenuator Pad
CV110-1A
Cellular-band High Linearity Downconverter
IF Feedthru
27
9
Path
(used for cellular versions only)
26
10
Frequency (MHz)
Device Architecture / Application Circuit Information
25
11
RF / IF Diplexer
LO
RF Amp Bias
R8 (ohms)
24
12
C17 (pF)
LO Driver Amp
Bandpass filtering is recommended to reject
L7 (nH)
L4 (nH)
23
13
IF Amp
22
14
The RF amplifier requires a shunt
RF Amp Matching
21
20
19
18
17
16
15
IF OUT
GND
N/C
GND
BIAS
GND
LO IN
470
470
4.7
40
24
RF Amplifier
MMIC Mixer
IF Amplifier
CV110-1A
RF Filter
430
240
IF Amp Matching
4.7
50
15
Stage
IF Amplifier Matching
150
330
3.3
75
22
LO Amp Bias
Gain
(dB)
13.5
19.0
-1.5
-9.0
IF Amp Bias
100
150
330
2.2
Typical Downconverter Performance Chain Analysis
10
Cumulative Performance
LO Amp Bias
Output
(dBm)
P1dB
125
120
330
21
---
22
8.2
2.2
8
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. Standard WJ evaluation boards will have the 2 dB pad in
place.
External Diplexer:
signal impinges on the switching elements of the mixer; the interaction
with these switches produces a signal at the IF frequency. The two
signals (RF and IF) are directed to the appropriate ports by the external
diplexer. A four-element diplexer is used in the circuit implementation
(L8 and C2 are not used). Pin 5 contains the IF signal and allows the
signal to be transferred to pin 25 for the convenience of PCB layouts.
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.
130
120
330
Output
6.8
2.2
(dBm)
40.0
23.0
39.1
IP3
---
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
1.5
9.8
2.5
Specifications and information are subject to change without notice
In a downconversion application, the incoming RF
169
330
5.0
2.2
82
Current
(mA)
150
150
360
---
60
180
330
4.7
2.2
82
Gain
(dB)
13.5
12.0
22.0
22.0
3.0
210
220
3.3
2.2
82
Cumulative Performance
Output
(dBm)
P1dB
21.0
19.5
20.3
20.3
240
220
3.9
2.2
6.1
56
Page 2 of 5 January 2009
Output
(dBm)
40.0
38.5
22.1
37.0
37.0
IP3
(dB)
NF
3.5
3.5
4.5
5.0
5.0