SSM2167Z-EVAL Analog Devices Inc, SSM2167Z-EVAL Datasheet

SSM2167Z-EVAL

Manufacturer Part Number

SSM2167Z-EVAL

Description

BOARD EVAL FOR SSM2167

Manufacturer

Analog Devices Inc

Datasheets

1.SSM2167-1RMZ-REEL.pdf (12 pages)

2.SSM2167Z-EVAL.pdf (4 pages)

Specifications of SSM2167Z-EVAL

Main Purpose

Audio, Microphone Pre-Amp

Embedded

Utilized Ic / Part

SSM2167

Primary Attributes

Variable Compression, Noise Gating, 0.2% THD + N, Adjustable Compression Ratio

Secondary Attributes

Automatic Limiting Feature prevents ADC Overload, 3 V (2.5 ~ 5.5 V)

Silicon Manufacturer

Analog Devices

Application Sub Type

Microphone Preamplifier

Kit Application Type

Audio / Video / TV

Silicon Core Number

SSM2167

Kit Contents

Board

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SSM2167Z-EVAL

Manufacturer:

Analog Devices Inc

Quantity:

135

Current page: 1 of 4
Download datasheet (125Kb)

THE SSM2167 EVALUATION BOARD

The evaluation board is a convenient means to evaluate and

understand the operation of the SSM2167. This application note

provides a basic explanation of how the board is set up and how

to use it to evaluate the SSM2167. This document is only a

supplement and refers to figures contained in the product data

sheet. The current SSM2167 data sheet is available online at

www.analog.com.

This application note also contains the schematics and layout for

the evaluation board to allow easy modification and experimenta-

tion. Applications support is available from Analog Devices,

Inc., online at

1-800-ANALOGD or 1-800-262-5643.

BASIC CONNECTIONS AND SETUP

The board features simple, easy-to-use connections that allow

for a broad range of experimentation. The evaluation board is

available only with the SSM2167-1.

Power and Ground

The SSM2167 is optimized for operation at 3 V; however, it can

operate from a wide range of supplies. Refer to the product data

sheet for the maximum limits. The SSM2167 board can be con-

nected to a bench power supply or two AA batteries. Power leads

need to be soldered into place at JP3. Alternatively, a header

jack can be soldered to the board to allow easy disconnection.

The power and ground connections are critical to the perfor-

mance of the board, so take care to ensure proper connection.

Shutdown Connection

Located at JP3, along with the power and ground, is the low

current shutdown connection. The board has a pull-up resistor

installed so that if no connection is made at that point, the part

operates in active mode. To enable the shutdown feature,

connect the SD (Pin 1) on JP3 to ground. To perform an in-

depth analysis on the shutdown current, the pull-up resistor, R5,

can be removed. The shutdown pin should not be left floating.

If R5 is removed, be sure to connect the SD (Pin 2) directly to

the supply or ground.

One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

www.analog.com

or in the United States at

Using the SSM2167 Evaluation Board

by Shawn Scarlett

Rev. B | Page 1 of 4

Signal Connections, Input, and Output

Signal sources can be connected to the evaluation board with

standard 3.5 mm jacks or leads which can be soldered directly

to the board at JP2 and JP3. The board uses 3.5 mm stereo

sockets with the signal on the tip and the sleeve connected to

the board ground; the ring is left floating. At both jumper

connections, a ground point is available to prevent noise.

The input jack is configured for maximum versatility. By

default, it is designed for use with an electret microphone

or input source. It can be changed easily to accommodate

dynamic microphones.

ELECTRET MICROPHONES

The evaluation board is configured with a 2.2 kΩ resistor (R4)

to the supply for use as a biasing resistor. It is connected directly

to the signal path so that both the jack and the jumper (JP2) can

be used as input connections. Standard computer electret micro-

phones can be used without modification because the ring and

tip are connected internally in the microphone. The input jack and

JP2 are decoupled from the input pin via a 0.1 μF capacitor (C1).

DYNAMIC MICROPHONES

If the board is to be used with a dynamic or self-powered

microphone, remove R4.

OUTPUT SIGNAL

The output jack is decoupled from the circuit via a 10 μF

capacitor (C2). The connection can be made at either JP1 or the

standard 3.5 mm jack, with the signal connection to the tip of

the plug. For listening tests, the output signal can be connected

directly from the 3.5 mm jack to an RCA input on a normal

audio amplifier using a standard stereo adapter cable. In this

case, use the left (white or black) RCA connection because it

corresponds with the tip of the 3.5 mm jack. The output of the

SSM2167 is not sufficient to drive headphones or other output

transducers without external amplification.

APPLICATION NOTE

AN-583

Related parts for SSM2167Z-EVAL

SSM2167Z-EVAL Summary of contents

Page 1

One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com Using the SSM2167 Evaluation Board THE SSM2167 EVALUATION BOARD The evaluation board is a convenient means to evaluate and understand ...

Page 2

AN-583 TEST EQUIPMENT SETUP SSM2167 SIGNAL EVALUATION GENERATOR BOARD AC VOLTMETER Figure 1. Test Equipment Setup The recommended equipment and configuration is shown in Figure 1. A low noise audio generator with a smooth output adjustment range of 50 μV ...

Page 3

Application Note Figure 3. SSM2167 Evaluation Board; Top Layer JP3 3. 0.1µF 10% 16V 500kΩ MIC IN 0.1µF 2.2kΩ ...

Page 4

AN-583 Table 1. Parts List for SSM2167 Evaluation Board Reference U1 C1, C10 C2, C3 C5, C6, C7, C8 C11 J1, J2 JP1, JP2 JP3 JP4, JP5 JP4 (Pin 7, Pin 8), JP5 (Pin 7, Pin 8) R4 ...

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