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See Technical Specifications

SSM2166SZ

Complete Microphone Conditioner with Variable Compression & Noise Gating

Manufacturer:

ADI
Mfr.Part #:

SSM2166SZ
Datasheet:

SSM2166SZ Datasheet (PDF)
Pbfree Code:

No
Part Life Cycle Code:

Active
Pin Count:

14
Reach Compliance Code:

compliant
EDA/CAD Models:

Request Free CAD Models for SSM2166SZ

Email: [email protected]

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SSM2166SZ General Description

The SSM2166 integrates a complete and flexible solution for conditioning microphone inputs in computer audio systems. It is also excellent for improving vocal clarity in communications and public address systems. A low noise, voltage-controlled amplifier (VCA) provides a gain that is dynamically adjusted by a control loop to maintain a set compression characteristic. The compression ratio is set by a single resistor and can be varied from 1:1 to over 15:1 relative to a user-defined rotation point; signals above the rotation point are limited to prevent overload and to eliminate popping. In the 1:1 compression setting, the SSM2166 can be programmed with a fixed gain of up to 20 dB; this gain is in addition to the variable gain in other compression settings. The input buffer can also be configured for front-end gains of 0 dB to 20 dB. A downward expander (noise gate) prevents amplification of noise or hum. This results in optimized signal levels prior to digitization, thereby eliminating the need for additional gain or attenuation in the digital domain that could add noise or impair accuracy of speech recognition algorithms. The compression ratio and time constants are set externally. A high degree of flexibility is provided by the VCA gain, rotation point, and noise gate adjustment pins.

Key Features

Complete microphone conditioner in a 14-lead 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 (±1 dB)

Specifications

Source Content uid	SSM2166SZ	Pbfree Code	No
Part Life Cycle Code	Active	Pin Count	14
Reach Compliance Code	compliant	HTS Code	8542.33.00.01
Consumer IC Type	AUDIO PREAMPLIFIER	JESD-30 Code	R-PDSO-G14
Moisture Sensitivity Level	1	Number of Channels	1
Number of Functions	1	Number of Terminals	14
Peak Reflow Temperature (Cel)	260	Surface Mount	YES
Technology	BIPOLAR	Temperature Grade	INDUSTRIAL
Terminal Finish	MATTE TIN	Terminal Form	GULL WING
Terminal Position	DUAL	Product Category	Microphone Preamplifiers
Series	SSM2166	Amplifier Type	Conditioning Microphone Preamplifier
THD plus Noise	0.25 %	Ib - Input Bias Current	-
Vos - Input Offset Voltage	-	Maximum Input Resistance	180 kOhms
Supply Voltage - Max	5.5 V	Supply Voltage - Min	4.5 V
Minimum Operating Temperature	- 40 C	Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT	Class	Class-AB
GBP - Gain Bandwidth Product	30 MHz	Height	1.75 mm
Length	8.75 mm	Operating Supply Current	7.5 mA
Operating Supply Voltage	4.5 V to 5.5 V	Product	Microphone Preamplifiers
Product Type	Microphone Preamplifiers	PSRR - Power Supply Rejection Ratio	50 dB
Subcategory	Audio ICs	Width	4 mm
Unit Weight	0.011993 oz