Product Specification

SP4309

Page 4 of 9

Evaluation Kit

The Digital Attenuator Evaluation Kit board was

designed to ease customer evaluation of the

SP4309 Digital Step Attenuator. Connect J2 by

mini clip to Vdd to power the IC. Connect J8 by

mini clip to power the evaluation board support

circuits. The control bits for the six parallel data

inputs (C0.5 to C16) are controlled using S2-S7 to

select bits or bit combinations. This allows any

attenuation setting to be specified as shown in

Table 6.

The de-embed trace (J6 to J7) estimates the PCB

insertion loss for removal from the evaluation

board measurement data.

To evaluate using customer software, J1 can be

installed using a standard 0.100 IDC header

(some circuit modification required, see

schematic).

The ability to supply different voltages for the

Control circuitry (using J8) and IC Vdd (using J2)

circuits allows for evaluation of circuits using

different control vs. supply voltages.

Figure 5. Evaluation Board Layout

Figure 6. Evaluation Board Schematic

Tel: +86-23-62808818

Fax: +86-23-62805284

www.sipatsaw.com / sawmkt@sipat.com