1
CXA1951Q
PE95Z40-ST
GPS Down Converter
Description
The CXA1951Q is an IC developed as a GPS
down converter, featuring low current consumption
and small package. This IC is suitable for the mobile
GPS (Global Positioning System).
Features
Includes all functions required for the GPS converter.
Total gain: 110dB or more
Operating supply voltage range: 2.7 to 5.5V
Low current consumption:
Icc = 30mA (Typ. at Vcc = 3V)
Excellent temperature characteristics
Applications
GPS (Global Positioning System)
Structure
Bipolar silicon monolithic IC
Absolute Maximum Ratings (Ta = 25C)
Supply voltage
V
CC
7.0
V
Operating temperature Topr
40 to +85
C
Storage temperature
Tstg
65 to +150
C
Allowable power dissipation
P
D
200
mW
Operating Conditions
Supply voltage
V
CC
2.7 to 5.5
V
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
40 pin QFP (Plastic)
Preliminary
For the availability of this product, please contact the sales office.
Current consumption
Front-end conversion gain
IF amplifier band width
2nd mixer conversion gain
Limiter gain
Limiter output level
1st IF output impedance
1st IF input impedance
2nd IF output impedance
Limiter input impedance
FC
NSW
Charge pump
output current
LOCK DET
output voltage
3
CXA1951Q
Electrical Characteristics
(V
CC
= 3V, Ta = 25C)
fin = 1575.42MHz
I
RL
= 0.1mA
I
RL
= 0.1mA
I
CC
CGmix1
BWif
CGmix2
PGlim
Volim
Zomix1
Zimix2
Zomix2
Zilim
I
IH
I
IL
IFCin
IFCin
I
OH
I
OL
V
OH
V
OL
1
2
30
21
41
30
67
0.8
1
1
1
1
30
30
30
30
1
500
mA
dB
MHz
dB
dB
Vp-p
k
k
k
k
A
A
A
A
mA
mA
V
mV
Item
Measurement conditions
Min.
Typ.
Max.
Unit
Symbol
Input High current
Input Low current
Input High current
Input Low current
High
Low
High
Low
5
CXA1951Q
Application Circuit
1/4 or 1/6
1/338 or 1/570
OSC
40
39
38
37
36
31
32
33
35
34
2
3
5
7
8
9
10
1
4
21
25
23
24
22
27
28
29
30
26
12
13
11
14
15
16
17
18
19
20
L3
68
LQP21A3N3J04
C22
100n
C21
100n
L10
330/22
C15
10n
C14
10n
C5
100p
C6 1n
C4
100p
CV1
6p
C37
100n
C24
0.1
N. C
N. C
C20
4.7
C19
4.7
C16
100n
C18
100n
C17
82p
C13
10n
C12
10n
L6
0.56/0.47
L5
0.56/0.47
C8
4.7
L7, L8, C10: Jumper
L9, C9: Open LQH1NR56K04/LQH1NR47K04
C1
4.7
L4
68
LQS33N680G04
LQS33N680G04
RF input
L2
3.3n
CN1
TZC03P060A110
C3
1n
L1
68
C2
4.7
V
CC
C32
100p
C28
10n
C30
1n
C31
1.5n
C33
100p
L15
10n
L14
10n
R8
47k
R7
47k
R6
2.4k
C35
0.5p
C34
0.5p
C36
0.5p
C29
0
R5
0
R4
680
R3
100
L13
68
LQS33N680G04
SW1
fo/4fo
C27
4.7
Lock detect
Test output
R2
100
18.414 or 16.368MHz
TCXO (18fo/16fo) input
C26
10n
CN2
C25
0.1
C23
4.7
L11
68
LQS33N680G04
V
CC
L12
68
LQS33N680G04
R1
1M
LQH3N331J04/LQS33N220G04
C7
4.7
Notice: Two component values are indicated, the order is depending on the output frequency.
The first value is as for 'fo output' and the second value is as for '4fo output'.
SW2
D2
IT365
D1
IT365
(19fo/20fo)
IC2
TC7SU04F
Output
(fo/4fo)
PLL
C11
51p
/62p
f = 1575.42MHz
(1521fo/1520fo)
6
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
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