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All versions are No Longer Available.

Data Sheet

FULL DATA SHEET (PDF, 284kB) Download   E-Mail

Description

The MAX9810 microphone preamplifier is intended for use inside electret condenser microphone (ECM) cartridges. Current solutions use a FET as an impedance converter. FETs have limited gain, are susceptible to noise and require additional components external to the ECM cartridge for biasing and amplification. The MAX9810 replaces the FET with a high-gain, high-noise rejection, low-output-impedance amplifier. Designed to be integrated inside the ECM cartridge, the MAX9810 offers a flat frequency response, tightly controlled gain, increased sensitivity, and high-noise rejection greatly simplifying system design. Target applications include ECM cartridges in cell phones, PDAs, notebooks, and other portable audio devices. The MAX9810 operates from a single 2.3V to 5.5V supply and consumes only 670µA of quiescent current. The device features an internally generated 1.5V DC bias and is available in three internally fixed gain options (24dB, 27dB, and 30dB). The MAX9810 is specified over the extended temperature range (-40°C to +85°C) and comes in a tiny 4-bump chip-scale package (UCSP™) that is designed to fit inside the ECM cartridge.

Key Features		Applications/Uses
Replaces FET in Electret Condenser Microphone 2.3V to 5.5V Single-Supply Operation Low-Impedance Output (<0.4Ω) High PSRR: 82dB Three High-Gain Options: MAX9810A: 24dB MAX9810B: 27dB MAX9810C: 30dB Internal Bias Voltage Low Supply Current (670µA) Rail-to-Rail Output No Output Phase Reversal During Overload Conditions Available in a Tiny 4-Bump UCSP		Cell Phones Electret Condenser Microphone Cartridges Notebook Computers PDAs Portable Audio

Diagram

Typical Operating Circuit

Design Guides

Amplifiers and Sensors (PDF) Low-Power Notebook ICs (PDF) Audio (PDF)

Reliability Reports

Request Reliability Report for: MAX9810 MAX9810C MAX9810B MAX9810A

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-6 of 6

MAX9810A	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9810AEBS+T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9810AEBS-T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX9810B	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9810BEBS+T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9810BEBS-T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
MAX9810C	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9810CEBS+T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4+1*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9810CEBS-T		N/A	No Longer Available	UCSP;4 pin;1.1 mm² Outline Drawing: 21-0117 (PDF) Land Pattern: Not Available Use pkgcode/variation: B4-1*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis

Notes and Comments

The MAX9810 is a unique amplifier that is designed to be placed inside the microphone.

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