Datasheet

J42

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Board Configuration

2.4 Bias Current Control – Programmable\

The bias current can be controlled by an external pattern generator or a microcontroller through the J42

header ( Figure 2). The same test points TP3, TP4, and TP5 are used to verify the setting of the

associated B1, B2, and B3, respectively. Pin assignment of J42 is shown in Table 4.

Figure 5. Header to Automated Control of Bias Current

Table 4. J42 Pinout

Pin Signals

1 B1

2 GND

3 B2

4 GND

5 B3

6 GND

7 N/C

8 GND

9 N/C

10 GND

11 N/C

12 GND

13 N/C

14 GND

15 N/C

16 GND

2.5 Inputs

The EVM board has eight inputs. Each input has one SMA and one jumper as shown in Figure 6. The

user can input the test signal through the SMA connector or through the two-pin header.

Figure 6. Input Structure

Table 5. Input SMA/Jumper Assignment

Input SMA Jumper

IN1 J1 J17

IN2 J2 J18

IN3 J3 J19

SLLU141A–March 2011–Revised May 2011 TX810, 8-Channel, Current-Programmable, Low-Noise, Transmit/Receive Switch

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