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ML13135LP View Datasheet(PDF) - LANSDALE Semiconductor Inc.

Part Name
Description
Manufacturer
ML13135LP Datasheet PDF : 11 Pages
1 2 3 4 5 6 7 8 9 10
ML13135
LANSDALE Semiconductor, Inc.
TEST CIRCUIT INFORMATION
The recovered audio measurements for the ML13135 are
made with an LC quadrature detector. The typical recovered
audio will depend on the external circuit; either the Q of the
quad coil, or the RC matching network for the ceramic dis-
criminator. See Figures 10 and 11 for additional information.
Since adding a matching circuit to the RF input increases the
signal level to the mixer, the third order intercept (TOI) point
is better with an unmatched input (50 from Pin 21 to Pin
22). Typical values for both have been included in the
Electrical Characterization Table. TOI measurements were
taken at the pins with a high impedance probe/spectrum ana-
lyzer system. The first mixer input impedance was measured at
the pin with a network analyzer.
Figure 1a. ML13135 Test Circuit
VCC
0.1
1.0 k
0.84 µH
0.01
39.0 20 p
MHz
Xtal 5.0 p
5.0 k
1st LO
1
2
3
VCC1
4
24
Varicap
23
22
21
Figure 1.
0.001
0.2 µH
0.01
62 pF
RF
180 p
Input
0.1
120 p
5
50 p
6
2nd LO
20
VCC2
19
Ceramic
Filter
10.7 MHz
10.245
7
MHz Xtal
Ceramic
8
Filter
455 kHz
9
10
0.1
0.1
11
0.1
Limiter
0.1
18
Demod
AF
17
16
15
8.2 k
0.1
360
39 k
12
14
0.1
13
39 k
455 kHz
Quad
Coil
Page 3 of 11
www.lansdale.com
Issue 0
 

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