S-VM1010-C Vesper

VM1010 EVK PCB User Guide Rev 0. Oct. 2018 By Michael Tuttle 1 General Description This document describes the S-VM1010-C Evaluation Kit PCB. The Eval PCB provides the TM necessary circuitry to carry out evaluation of the VM1010 ZeroPower Listening (ZPL) microphone. The board consists of the VM1010 ZPL bottom port MEMS microphone, a configurable threshold resistor circuit, current sense chip and a 0.1uF power supply bypass capacitor along with an edge connector. The user can simply use a corresponding female connector (CW Industries CWR-170-10-0000) or solder wires to make good electrical contact to the power, mode and output pins of the mic and the current sense pin of the circuit. 2 Pinout and Pin Descriptions The board is shown in Figure 1 as follows and the corresponding pins in table 1 have been labeled: Figure 1. VM1010 Eval PCB Vesper Technologies 1 Vesper VM1010 Eval PCB User Guide Top Side Bottom Side Board Name Description Board Name Description Pin Pin Number Number T1 Dout Digital output B1 GND Ground for ZPL Trigger T2 GND Ground B2 Mode Mode Control T3 Vcurrentsense Current Monitor B3 GND Ground voltage T4 GND Ground B4 VDD Power Supply (1.7 to 3.6V) T5 Vout Analog Output B5 GND Ground Table 1. Pin descriptions Figure 2. Edge-connector: CW Industries CWR-170-10-0000 and corresponding pin assignments 3 ZeroPower Listening Threshold Adjust The eval board has a resistor circuit to configure the Rg which in turn varies the ZeroPower Listening threshold. The solder jumper options S1 and S2 set the Rg value to the corresponding pre-set threshold levels as shown in table 2 below. Vesper Technologies 2 Vesper VM1010 Eval PCB User Guide