SSM2166SZ Analog Devices Inc, SSM2166SZ Datasheet
SSM2166SZ
Specifications of SSM2166SZ
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SSM2166SZ Summary of contents
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FEATURES Complete microphone conditioner in a 14-lead SOIC package Single 5 V operation Adjustable noise gate threshold Compression ratio set by external resistor Automatic limiting feature—prevents ADC overload Adjustable release time Low noise and distortion Power-down feature 20 kHz bandwidth ...
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SSM2166 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram and Typical Speech Application ...... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD ...
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SPECIFICATIONS kHz 100 kΩ GATE V = 300 mV rms. IN Table 1. Parameter Symbol AUDIO SIGNAL PATH Voltage Noise Density e Noise Total Harmonic Distortion and THD + ...
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SSM2166 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage Audio Input Voltage Operating Temperature Range Storage Temperature Range Junction Temperature ( Lead Temperature (Soldering, 60 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 GND Ground. 2 GAIN ADJUST VCA Gain Adjust Pin. A resistor from this pin to ground sets the fixed gain of the VCA. To check ...
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SSM2166 TYPICAL PERFORMANCE CHARACTERISTICS 0 COMP RATIO = 15:1 COMP RATIO = 10:1 COMP RATIO = 5:1 –10 –20 COMP RATIO = 2:1 –30 –40 – 25° 300mV rms @ 1kHz –60 ...
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T = 25°C A ...
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SSM2166 THEORY OF OPERATION Figure 15 illustrates a typical transfer characteristic for the SSM2166 where the output level in decibels is plotted as a function of the input level in decibels. The dotted line indicates the transfer characteristic for a ...
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The gain of the VCA at the rotation point is set by the value of a resistor connected between Pin 2 and GND. The relationship GAIN between the VCA gain and R is shown in Figure 6. The ...
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SSM2166 The performance of the rms level detector is illustrated for 2.2 μF in Figure 17 and for a C AVG AVG In each of these images, the input signal to the SSM2166 (not shown ...
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Because limiting occurs for signals larger than the rotation point (V > the rotation point effectively sets the maximum output IN RP signal level recommended that the rotation point be set at the upper extreme of ...
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SSM2166 POWER-DOWN FEATURE The supply current of the SSM2166 can be reduced to less than 100 μA by applying an active high CMOS-compatible input to the POWER DOWN pin (Pin 12). In this state, the input and output ...
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EVALUATION BOARD A schematic diagram of the SSM2166 evaluation board is illustrated in Figure 26 design aid, the layouts for the topside silkscreen and the topside and backside metallization layers are shown in Figure 27, Figure 28, and ...
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SSM2166 IC2 IC1 Figure 27. Evaluation Board Topside Silkscreen (Not to Scale) Figure 28. Evaluation Board Topside Metallization (Not to Scale) Figure 29. Evaluation Board Backside Metallization (Not to Scale) EVALUATION BOARD EXAMPLES To illustrate how easy ...
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Note that the SSM2166 processes the output of the buffer, which in the previous example times the input level. Use the oscilloscope to verify that the buffer is not being driven into clipping with excessive ...
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SSM2166 SETUP SUMMARY The transfer condition of Figure 2 has been implemented. For inputs below the 100 μV noise gate threshold, circuit and back- ground noise is minimized. Above it, the output increases at a rate for ...
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... SSM2166S-REEL7 −40°C to +85°C 1 SSM2166SZ −40°C to +85°C 1 SSM2166SZ-REEL −40°C to +85°C 1 SSM2166SZ-REEL7 −40°C to +85° RoHS Compliant Part. Top Branding Revision Reflecting Die Replacement Original Die Revision Version (Prior to Rev Data Sheet) Pb-Free (RoHS) Version Top Line 1: SSM ...
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SSM2166 NOTES Rev Page ...
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NOTES Rev Page SSM2166 ...
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SSM2166 NOTES ©1996–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00357-0-7/08(D) Rev Page ...