MAX4060, MAX4061, MAX4062 Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown

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The MAX4060/MAX4061/MAX4062 are differential-input microphone preamplifiers optimized for notebook and PDA audio systems. These devices feature adjustable gain with excellent power-supply rejection and common-mode rejection ratios, making them ideal for low-noise applications in portable audio systems.

The MAX4060/MAX4062 are capable of switching their output between the differential input and a single-ended auxiliary microphone amplifier input. In addition, the MAX4060/MAX4062 have a low-noise microphone bias generator. The differential gain of the MAX4061/MAX4062 is set with a single resistor. The MAX4060 has a fixed gain of 10V/V and is PC99/2001 compliant. The MAX4061 includes a complete shutdown mode. In shutdown, the supply current is reduced to 0.3µA and the current to the microphone bias is cut off for ultimate power savings.

The MAX4060 operates from a 4.5V to 5.5V single supply and the MAX4061/MAX4062 operate from 2.4V to 5.5V. All devices are specified over the extended operating temperature range, -40°C to +85°C. The MAX4060/MAX4061 are available in tiny 8-pin thin QFN (3mm x 3mm x 0.8mm) and 8-pin µMAX® packages. The MAX4062 is available in a 10-pin µMAX package.

Key Features

Applications/Uses

2.4V to 5.5V Single-Supply Operation
Adjustable Gain or Fixed-Gain Options
High PSRR (86dB at 1kHz)
High CMRR (70dB at 1kHz)
Low Input-Referred Noise
Integrated Microphone Bias
750µA Supply Current
0.3µA Shutdown Current
±4kV ESD Protection (AUX_IN)
Rail-to-Rail Outputs
THD+N: 0.04% at 1kHz
Available in Space-Saving Packages
- 8-Pin Thin QFN (MAX4060/MAX4061)
- 8-Pin µMAX (MAX4060/MAX4061)
- 10-Pin µMAX (MAX4062)

	AES-42 Compliant Microphones
	Notebook Audio Systems
	PDA Audio Systems
	Signal Conditioning
	Tablet PCs
	USB Audio Peripherals

Key Specifications: Microphone Amplifiers

Part Number

Number of Channels

Supply Voltage (min) (V)

Supply Voltage (max) (V)

Quiescent Supply Current (typ) (mA)

THD+N (%)

Input Noise-Voltage Density (nV/√Hz)

PSRR (db)

Input Type

External Gain

Fixed Gain (min) (|V/V|)

Fixed Gain (max) (|V/V|)

Microphone Bias

RoHS Available

Package

Price^**

MAX4060

4.5

5.5

0.75

0.05

100

Differential with Aux

Yes

THIN QFN (Dual)/8

$0.55 @ 1k

MAX4061

2.4

Differential

THIN QFN (Dual)/8

$0.55 @ 1k

MAX4062

2.4

Differential with Aux

Yes

uMAX/10

$0.60 @ 1k

See All Microphone Amplifiers (17)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.