MAX4062：Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown

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 TDFN (3mm x 3mm x 0.8mm) and 8-pin µMAX® packages. The MAX4062 is available in a 10-pin µMAX package.

Key Features

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 TDFN (MAX4060/MAX4061)
- 8-Pin µMAX (MAX4060/MAX4061)
- 10-Pin µMAX (MAX4062)

MAX4060, MAX4061, MAX4062: Block Diagram

Applications/Uses

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

DataSheet

title	Download file
MAX4060-MAX4062 Data Sheet	MAX4060-MAX4062.pdf

Parametrics

Part Number	Channels	V_SUPPLY (V)	V_SUPPLY (V)	I_Q (mA)	THD+N (%)	e_n (nV/√Hz)	PSRR (dB)	Input Type	Ext. Gain	Fxd. Gain (\|V/V\|)	Fxd. Gain (\|V/V\|)	Microphone Bias	Package/Pins	Budgetary Price
Part Number	Channels	min	max	typ	THD+N (%)	e_n (nV/√Hz)	min	Input Type	Ext. Gain	min	max	Microphone Bias	Package/Pins	See Notes
MAX4060	2	4.5	5.5	0.75	0.05	100	90	Differential with Aux	No	10	10	Yes	TDFN-EP/8	$0.45 @1k
MAX4061	1	2.4				20		Differential	No			No	TDFN-EP/8
MAX4062	2	2.4				20		Differential with Aux	Yes			Yes	µMAX/10

Design kits & evaluation modules

MAX4060EVKIT

Quality and Environmental Data

MAX4062.pdf