SL2035MP1S 데이터 시트보기 (PDF) - Mitel Networks

부품명

상세내역

일치하는 목록

SL2035MP1S

High Performance Broadband Downconverter

Mitel Networks 

SL2035

Electrical Characteristics (continued)

Characteristic

Value

Pin Min. Typ. Max. Units

Conditions

LO and harmonic leakage

to RF input

Fundamental

7,8

2nd harmonic

7,8

LO Prescaler output swing

10 95

LO Prescaler output impedance 10 25

IF output impedance

1,16

72 dBµV To device input

92 dBµV To device input

dBµV Into 50Ω load

75

Ω

Ω See Figure 4

6

PIN 7

3·3p

820

6

PIN 8

Figure 3 Approximate model of RF input

Application Notes

Figure 5 shows the SL2035 in a typical downconverter

application.

The network connected to RF input pin 7 and pin 8 is to

improve the matching between the device input and the

source. The source would normally be from the 1·1MHz

IF output of the upconverter (SL2030) via passive BPF

and gain stage all designed for 50Ω characteristic

impedance.

The network connected to the IF output pin 1 and pin 16 is

a narrow band tuned balun centred typically on 40MHz.

PIN 1

PIN 16

2p

325

Figure 4 Approximate model of IF output

This matches the device output impedance of nominally

400Ω (balanced) to 50Ω (unbalanced).

The network connected to the LO pin 12 and pin 13 is a

varactor diode loaded resonant microstrip line resonator.

Fine adjustment of the tuning range can be achieved by

physically moving C19 (see Figure 5) closer to the LO pins.

This extends the bottom end of the tuning range.

It is important to provide good decoupling on the 5V

supplies and to use a layout which provides some isolation

between the RF, IF and LO ports.

3

Share Link: