Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOIC 8 N

MAX4249–MAX4257

UCSP, Single-Supply, Low-Noise,

Low-Distortion, Rail-to-Rail Op Amps

EVALUATION KIT AVAILABLE

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

General Description

The MAX4249–MAX4257 low-noise, low-distortion oper-

ational amplifiers offer rail-to-rail outputs and single-

supply operation down to 2.4V. They draw 400µA of

quiescent supply current per amplifier while featuring

ultra-low distortion (0.0002% THD), as well as low input

voltage-noise density (7.9nV/!Hz) and low input

current-noise density (0.5fA/!Hz). These features make

the devices an ideal choice for portable/battery-powered

applications that require low distortion and/or low noise.

For additional power conservation, the MAX4249/

MAX4251/MAX4253/MAX4256 offer a low-power shut-

down mode that reduces supply current to 0.5µA and

puts the amplifiers’ outputs into a high-impedance

state. The MAX4249-MAX4257’s outputs swing rail-to-

rail and their input common-mode voltage range

includes ground. The MAX4250–MAX4254 are unity-

gain stable with a gain-bandwidth product of 3MHz.

The MAX4249/MAX4255/MAX4256/MAX4257 are inter-

nally compensated for gains of 10V/V or greater with a

gain-bandwidth product of 22MHz. The single MAX4250/

MAX4255 are available in space-saving 5-pin SOT23

packages. The MAX4252 is available in an 8-bump chip-

scale package (UCSP™) and the MAX4253 is available in

a 10-bump UCSP. The MAX4250AAUK comes in a 5-pin

SOT23 package and is specified for operation over the

automotive (-40°C to +125°C) temperature range.

Applications

Wireless Communications Devices

PA Control

Portable/Battery-Powered Equipment

Medical Instrumentation

ADC Buffers

Digital Scales/Strain Gauges

Features

! Available in Space-Saving UCSP, SOT23, and

µMAX

Packages

! Low Distortion: 0.0002% THD (1k" load)

! 400µA Quiescent Supply Current per Amplifier

! Single-Supply Operation from 2.4V to 5.5V

! Input Common-Mode Voltage Range Includes

Ground

! Outputs Swing Within 8mV of Rails with a 10k"

Load

! 3MHz GBW Product, Unity-Gain Stable

(MAX4250–MAX4254)

22MHz GBW Product, Stable with A

# 10V/V

(MAX4249/MAX4255/MAX4256/MAX4257)

! Excellent DC Characteristics

= 70µV

BIAS

= 1pA

Large-Signal Voltage Gain = 116dB

! Low-Power Shutdown Mode

Reduces Supply Current to 0.5µA

Places Outputs in a High-Impedance State

! 400pF Capacitive-Load Handling Capability

19-1295; Rev 9; 12/12

Ordering Information continued at end of data sheet.

Selector Guide appears at end of data sheet.

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

UCSP is a trademark and µMAX is a registered trademark of Maxim Integrated Products, Inc.

1 2 3

OUTA

OUTB

INA-

INB-

INB+

INA+

MAX4252

OUTA

OUTB

INA-

INB-

INA+

INB+

SHDNA

SHDNB

MAX4253

C2 C3

TOP VIEW

(BUMPS ON BOTTOM)

UCSP

Pin/Bump Configurations continued at end of data sheet.

Pin/Bump Configurations

Ordering Information

PART TEMP RANGE

PIN-

PACKAGE

TOP

MARK

MAX4249ESD+

-40°C to +85°C 14 SO —

MAX4249EUB+ -40°C to +85°C 10 µMAX —

MAX4250EUK+T

-40°C to +85°C 5 SOT23 ACCI

M AX 4250AAU K+ T - 40°C to + 125°C 5 SOT23 AEYJ

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Summary of content (16 pages)

PAGE 1
EVALUATION KIT AVAILABLE MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps General Description The MAX4249–MAX4257 low-noise, low-distortion operational amplifiers offer rail-to-rail outputs and singlesupply operation down to 2.4V. They draw 400µA of quiescent supply current per amplifier while featuring ultra-low distortion (0.0002% THD), as well as low input voltage-noise density (7.9nV/!Hz) and low input current-noise density (0.5fA/!Hz).
PAGE 2
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps ABSOLUTE MAXIMUM RATINGS Power-Supply Voltage (VDD to VSS) ......................+6.0V to -0.3V Analog Input Voltage (IN_+, IN_-)....(VDD + 0.3V) to (VSS - 0.3V) SHDN Input Voltage ......................................6.0V to (VSS - 0.3V) Output Short-Circuit Duration to Either Supply ..........Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........
PAGE 3
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps ELECTRICAL CHARACTERISTICS (continued) (VDD = 5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected to VDD/2, SHDN = VDD, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER Power-Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage Swing Output Voltage Swing Output Short-Circuit Current Output Leakage Current SYMBOL PSRR AV VOUT VOUT CONDITIONS VDD – 2.
PAGE 4
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps ELECTRICAL CHARACTERISTICS (continued) (VDD = 5V, VSS = 0V, VCM = 0V, VOUT = VDD/2, RL connected to VDD/2, SHDN = VDD, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 5
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Typical Operating Characteristics (VDD = 5V, VSS = 0V, VCM = VOUT = VDD/2, input noise floor of test equipment =10nV/!Hz for all distortion measurements, TA = +25°C, unless otherwise noted.) 100 50 0 -50 15 -100 10 -150 0 -250 -40 -20 VOS (µV) OUTPUT VOLTAGE vs. OUTPUT LOAD CURRENT 0.4 0.3 VOL 60 0.2 0.06 RL = 1kΩ 4 5 6 7 8 9 10 0.05 RL = 20kΩ 110 0.
PAGE 6
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0V, VCM = VOUT = VDD/2, input noise floor of test equipment =10nV/!Hz for all distortion measurements, TA = +25°C, unless otherwise noted.) RL = 100kΩ VOUT = 10mV TO 4.99mV 110 80 105 70 VDD = 5V RL REFERENCED TO GND 0 100 50 100 150 200 250 VOUT SWING FROM EITHER SUPPLY (mV) -40 -20 0.4 SHDN = VSS 380 0.3 360 0.2 340 0.1 320 2.3 2.8 3.3 3.
PAGE 7
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0V, VCM = VOUT = VDD/2, input noise floor of test equipment =10nV/!Hz for all distortion measurements, TA = +25°C, unless otherwise noted.) INPUT VOLTAGE-N0ISE DENSITY vs. FREQUENCY 1 AV = 1 (MAX4250–MAX4254) 0.
PAGE 8
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Typical Operating Characteristics (continued) (VDD = 5V, VSS = 0V, VCM = VOUT = VDD/2, input noise floor of test equipment =10nV/!Hz for all distortion measurements, TA = +25°C, unless otherwise noted.) MAX4250–MAX4254 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 1.5V 0.01 THD+N(%) RL TO VDD/2 RL TO GND VOUT 200mV/div RL TO VDD 0.5V 0.001 0.
PAGE 9
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Pin/Bump Description PIN/BUMP MAX4250/ MAX4255 MAX4251/ MAX4256 MAX4252/ MAX4257 MAX4252 MAX4249/ MAX4253 5-PIN SOT23 8-PIN SO/µMAX 8-PIN SO/µMAX 8-BUMP UCSP 10-BUMP UCSP 10-PIN µMAX 14-PIN SO 14-PIN SO 1 6 1, 7 A1, A3 A1, C1 1, 9 1, 13 1, 7, 8, 14 OUT, OUTA, OUTB, OUTC, OUTD 2 4 4 C2 B4 4 4 11 VSS 3 3 3, 5 C1, C3 A3, C3 3, 7 3, 11 3, 5, 10, 12 4 2 2, 6 B1, B3 A2, C2 2, 8 2, 12
PAGE 10
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Low Distortion Many factors can affect the noise and distortion that the device contributes to the input signal. The following guidelines offer valuable information on the impact of design choices on Total Harmonic Distortion (THD). Choosing proper feedback and gain resistor values for a particular application can be a very important factor in reducing THD.
PAGE 11
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Using a Feed-Forward Compensation Capacitor, CZ RISO VOUT CL MAX4250 MAX4251 MAX4252 MAX4253 MAX4254 VIN CZ = 11 x (RF / RG) [pF] Figure 3. Overdriven Input Showing No Phase Reversal 4.25V VOUT 0 4.45V VIN -200mV 0 The amplifier’s input capacitance is 11pF.
PAGE 12
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps 4.5 140 4.0 RISO (Ω) 120 100 80 60 SHADED AREA INDICATES STABLE OPERATION WITH NO NEED FOR ISOLATION RESISTOR. 40 20 0 10 100 1000 10,000 CAPACITIVE LOADING (pF) Figure 6. Isolation Resistance vs. Capacitive Loading to Minimize Peaking (<2dB) MAX4250–MAX4254 (AV = 1) MAX4249/MAX4255–MAX4257 (AV = 10) RISO = 0 PEAKING (dB) SHADED AREA INDICATES STABLE OPERATION WITH NO NEED FOR ISOLATION RESISTOR.
PAGE 13
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Typical Operating Circuit 5V VDD 50kΩ 2 MAX195 7 MAX4256 (16-BIT ADC) 6 3 VIN 4 8 AIN DOUT SHDN SCLK SERIAL INTERFACE CS 5kΩ REF VSS -5V 4.096V SHDN Selector Guide PART GAIN BANDWIDTH (MHz) MINIMUM STABLE GAIN (V/V) NO.
PAGE 14
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Pin/Bump Configurations (continued) TOP VIEW OUT 5 N.C. 1 VDD IN- 2 MAX4250 MAX4250A MAX4255 VSS 2 IN+ 3 IN+ 4 VSS 4 IN- INA- 2 3 OUTA 1 10 VDD MAX4249 MAX4253 8 SHDN OUTA 1 7 VDD INA- 2 6 OUT INA+ 5 N.C.
PAGE 15
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
PAGE 16
MAX4249–MAX4257 UCSP, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps Revision History REVISION NUMBER REVISION DATE 8 10/11 Added lead-free packaging to the Ordering Information and changed the Input Bias Current and Input Offset Current conditions in the Electrical Characteristics table 9 12/12 Added MAX4257ESA/V+T to Ordering Information.