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Part: MAX4062
Category:
Analog & Mixed-Signal Processing
Description: MAX4060, MAX4061, MAX4062 Differential Microphone Preamplifiers With Internal Bias And Complete Shutdown
Company: Maxim Integrated Products
Datasheet: Download MAX4062 datasheet File size : 595 kB
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Datasheet text preview:
19-2408; Rev 1; 1/03
Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown
General Description
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 lownoise applications in portable audio systems. The MAX4060/MAX4062 are capable of switching their o u t p u t between the differential input and a singleended auxiliary microphone amplifier input. In addition, the MAX4060/MAX4062 have a low-noise microphone b i a s 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 shutd o w n 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 opera t i n g 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. o o o o o o o o o o o o
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 Thin QFN (MAX4060/MAX4061) 8-Pin µMAX (MAX4060/MAX4061) 10-Pin µMAX (MAX4062)
MAX4060/MAX4061/MAX4062
Typical Operating Circuit
2.4V TO 5.5V BIAS 4 VCC
Applications
Notebook Audio Systems Tablet PCs PDA Audio Systems USB Audio Peripherals AES-42-Compliant Microphones Signal Conditioning
MAX4060
8 AUX_IN x10 INT/AUX 1
Ordering Information
PART MAX4060ETA MAX4060EUA MAX4061ETA MAX4061EUA MAX4062EUB TEMP RANGE -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PINPACKAGE 8 Thin QFN-EP* 8 µMAX 8 Thin QFN-EP* 8 µMAX 10 µMAX TOP MARK ABY -- ABZ -- --
BIAS OUT 2 5 IN+ x10 6 INVBIAS GND BIAS 3 BIAS
*EP = Exposed paddle. Pin Configurations and Selector Guide appear at end of data sheet. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
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________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown MAX4060/MAX4061/MAX4062
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to GND). .........-0.3V to +6V Any Other Pin to GND ........-0.3V to (VCC + 0.3V) Duration of Short Circuit to GND or VCC ...........Continuous Continuous Input Current (any pin) ........ ±10mA Continuous Power Dissipation (TA = +70°C) 8-Pin Thin QFN (derate 4.7mW/°C above +70°C) ......379mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ...330mW 10-Pin µMAX (derate 5.6mW/°C above +70°C) .........444mW Operating Temperature Range ...-40°C to +85°C Junction Temperature ......+150°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10s) .........+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
( V C C = 3V for MAX4061/MAX4062, V C C = 5V for MAX4060, GND = 0V, SHDN = V C C , INT/AUX = 0V, R G = 11.11k, RL = 100k to 1.5V, RBIAS = , TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER Supply Voltage Range Supply Current Output Common-Mode Voltage Slew Rate Supply Current in Shutdown Output Short-Circuit Current SYMBOL VCC ICC V OCM SR I SHDN ISC AV = 10V/V V SHDN = 0V, MAX4061 To GND To VCC 1.25 Inferred from PSRR test CONDITIONS MAX4061/MAX4062 MAX4060 MIN 2.4 4.5 0.75 1.5 ±1 0.001 30 30 ±0.1 1 AV = 1V/V, MAX4061/MAX4062 1 600 Either differential input AV = 10V/V, f = 1kHz Input Noise-Voltage Density RMS Output Noise Voltage en V NRMS AV = 100V/V, f = 1kHz, MAX4061/MAX4062 only AV = 10V/V, BW = 22Hz to 22kHz 100 1 100 20 125 nV/Hz µVRMS ±5 2 1 TYP MAX 5.5 5.5 1.2 1.75 UNITS V mA V V/µs µA mA
DIFFERENTIAL INPUT (INT/AUX = 0V for MAX4060/MAX4062, default for MAX4061) Input Offset Voltage Common-Mode Input Voltage Range Maximum Differential Input Voltage Small-Signal Bandwidth Input Resistance Input Resistance Match VOS VCM V DIFFMAX BW-3dB RIN RMATCH mV V V kHz k %
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Differential Microphone Preamplifiers with Internal Bias and Complete Shutdown
ELECTRICAL CHARACTERISTICS (continued)
( V C C = 3V for MAX4061/MAX4062, V C C = 5V for MAX4060, GND = 0V, SHDN = V C C , INT/AUX = 0V, R G = 11.11k, RL = 100k to 1.5V, RBIAS = , TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER Total Harmonic Distortion Plus Noise SYMBOL THD+N CONDITIONS AV = 10V/V, f = 1kHz, VOUT = 0.7VRMS, BW = 22Hz to 22kHz 1V < VCM < 2V, VOUT = 0.7VRMS, MAX4061/MAX4062 RG = open RG = 11.11k RG = 1.01k 1 9.6 96 9.6 72 60 86 200 100 f = 1kHz BW = 22Hz to 22kHz f = 1kHz, BW = 22Hz to 22kHz TA = +25°C TA = TMIN - TMAX VOUT = 0.7VRMS IBIAS = 0.8mA to GND, MAX4060 IBIAS = 0.5mA to GND, MAX4062 IBIAS = 0.8mA to GND, MAX4060 IBIAS = 0.5mA to GND, MAX4062 IBIAS = 0.8mA to GND, BW = 22Hz to 22kHz, MAX4060 Output Noise Voltage V NRMS IBIAS = 0.5mA to GND, BW = 22Hz to 22kHz, MAX4062 65 50 -10.7 2 2 2 -10 2.2 2.2 2.5 22 50 µVRMS 20 40 -9.3 45 385 0.05 90 kHz k nV/Hz µVRMS % dB V/V MIN TYP 0.04 1.13 10 100 10.0 70 89 dB 1.3 10.4 104 10.4 dB V/V MAX UNITS %
MAX4060/MAX4061/MAX4062
Differential Gain
AVDIFF
1V < VCM < 2V, VOUT = 0.7VRMS, MAX4060 Common-Mode Rejection Ratio Power-Supply Rejection Ratio CMRR PSRR VCM = 500mVP-P, f = 1kHz TA = +25°C TA = TMIN to TMAX VCC = 5V ±100mV, f = 1kHz AUXILIARY INPUT (MAX4060/MAX4062, INT/AUX = VCC) Small-Signal Bandwidth Input Resistance Input Noise-Voltage Density RMS Output Noise Voltage Total Harmonic Distortion Plus Noise Power-Supply Rejection Ratio Voltage Gain BIAS OUTPUT (MAX4060/MAX4062) Output Voltage Output Resistance V OUT ROUT BW-3dB RIN en V NRMS THD+N PSRR AVAUX
V k
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