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Part: MAX4274_EUA
Category:
Analog & Mixed-Signal Processing
Description: MAX4174, MAX4175, MAX4274, MAX4275, MAX4281, MAX4282, MAX4284 SOT23, Rail-to-Rail, Fixed-Gain, Gain Amps/open-loop op Amps
Company: Maxim Integrated Products
Datasheet: Download MAX4274_EUA datasheet File size : 416 kB
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Datasheet text preview:
19-1407; Rev 3; 8/99
SOT23, Rail-to-Rail, Fixed-Gain GainAmps/Open-Loop Op Amps
General Description
T h e MAX4174/MAX4175/MAX4274/MAX4275 GainAmpTM family combines a low-cost Rail-to-Rail® op amp with precision internal gain-setting resistors and VCC / 2 biasing. Factory-trimmed on-chip resistors decrease design size, cost, and layout, and provide 0.1% gain a c c u r a c y . Fixed inverting gains from -0.25V/V to -100V/V or noninverting gains from +1.25V/V to +101V/V are available. These devices operate from a single +2.5V to +5.5V supply and consume only 300µA. G a i n A m p amplifiers are optimally compensated for each gain version, achieving exceptional GBW products up to 23MHz (AV = +25V/V to +101V/V). High-voltage fault protection withstands ±17V at either input without excessive current draw. Three versions are available in this amplifier family: single/ d u a l / q u a d open-loop, unity-gain stable (MAX4281/ MAX4282/MAX4284); single/dual fixed gain (MAX4174/ M A X 4 2 7 4 ) ; and single/dual fixed gain plus internal V C C / 2 b i a s at the noninverting input (MAX4175/ MAX4275), which simplifies input biasing in single-supply designs. The input common-mode voltage range of the open-loop amplifiers extends from 150mV below the negative supply to within 1.2V of the positive supply. The outputs can swing rail-to-rail and drive a 1k load while maintaining excellent DC accuracy. The amplifier is stable for capacitive loads up to 470pF.
Features
o GainAmp Family Provides Internal Precision Gain-Setting Resistors in SOT23 (MAX4174/5) o 0.1% Gain Accuracy (RF/RG) (MAX4174/5, MAX4274/5) o 54 Standard Gains Available (MAX4174/5, MAX4274/5) o Open-Loop Unity-Gain-Stable Op Amps (MAX4281/2/4) o Rail-to-Rail Outputs Drive 1k Load o Internal VCC / 2 Biasing (MAX4175/MAX4275) o +2.5V to +5.5V Single Supply o 300µA Supply Current o Up to 23MHz GBW Product o Fault-Protected Inputs Withstand ±17V o Stable with Capacitive Loads Up to 470pF with No Isolation Resistor
MAX4174/5, MAX4274/5, MAX4281/2/4
Ordering Information
PART* TEMP. RANGE PINPACKAGE 5 SOT23-5 5 SOT23-5 TOP MARK
Applications
Portable Instruments Instruments, Terminals, and Bar-Code Readers Keyless Entry Photodiode Preamps Smart-Card Readers Infrared Receivers for Remote Controls Low-Side Current-Sense Amplifiers
MAX4174_EUK-T -40°C to +85°C MAX4175_EUK-T -40°C to +85°C
Ordering Information continued at end of data sheet. * Insert the desired gain code (from the Gain Selection Guide) in the blank to complete the part number. Refer to the Gain Selection Guide for a list of preferred gains and SOT Top Marks. Selector Guide appears at end of data sheet.
Pin Configurations
TOP VIEW
Typical Operating Circuit
+5V VCC 0.1µF
MAX4174
OUT 1 RF + VEE 2 RG IN+ 3 4 IN0.1µF INPUT 0.1µF INRG IN+ RB 5 VCC RB
VCC
MAX4175
OUT VEE RF VEE
SOT23-5
Pin Configurations continued at end of data sheet.
Patent pending
GainAmp is a trademark of Maxim Integrated Products. Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
SOT23, Rail-to-Rail, Fixed-Gain GainAmps/Open-Loop Op Amps MAX4174/5, MAX4274/5, MAX4281/2/4
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC to VEE) ...-0.3V to +6V Voltage Inputs (IN_) MAX4281/4282/4284............(VEE - 0.3V) to (VCC + 0.3V) MAX4174/4175/4274/4275 (with respect to GND) ..±17V Output Short-Circuit Duration (OUT_) ....Continuous to Either VEE or VCC Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C)....571mW 8-Pin SO (derate 5.88mW/°C above +70°C)........471mW 8-Pin µMAX (derate 4.1mW/°C above +70°C) ...330mW 14-Pin SO (derate 8.3mW/°C above +70°C)......667mW 16-Pin QSOP (derate 8.3mW/°C above +70°C)..........667mW Operating Temperature Range ...-40°C to +85°C Maximum Junction Temperature ....+150°C Storage Temperature Range .....-65°C to +150°C Lead Temperature (soldering, 10sec) .....+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--MAX4174/MAX4175/MAX4274/MAX4275 Fixed-Gain Amplifiers
(VCC = +2.5V to +5.5V, VEE = 0, VIN+ = VIN- = VCC / 2, RL to VCC / 2, RL = open, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Supply Current (per Amplifier) Input Offset Voltage Input Offset Voltage Drift Input Bias Current Inverting Input Resistance Noninverting Input Resistance IN_+ Bias Voltage IN_+ Input Voltage Range IN_- Input Voltage Range Power-Supply Rejection Ratio Closed-Loop Output Impedance Short-Circuit Current PSRR ROUT Shorted to VEE Shorted to VCC RL = 100k VOH/VOL RL = 1k VCC - VOH VOL - VEE VCC - VOH VOL - VEE IBIAS IN_+, MAX4174/MAX4274 (Note 2) AV 25V/V MAX4174/MAX4274 MAX4175/MAX4275 MAX4175/MAX4275, VIN+ = VINGuaranteed by functional test (Note 3) Guaranteed by functional test VCC = 2.5V to 5.5V VCC / 2 - 0.25 VEE VEE 70 90 0.02 10 65 2 2 150 60 8 8 250 150 mV SYMBOL VCC CONDITIONS Guaranteed by PSRR tests MAX4174/MAX4274 ICC MAX4175/MAX4275, includes VCC / 2 bias resistors RL = 100k VCC = 3V VCC = 5V VCC = 3V VCC = 5V MIN 2.5 300 330 320 355 ±0.5 ±5 ±0.05 150 40 1000 75 VCC / 2 + 0.25 VCC - 1.2 VCC ±10 TYP MAX 5.5 460 510 480 530 ±2.5 mV µV/°C nA k M k V V V dB mA µA UNITS V
VOS
Output Voltage Swing (Note 4)
2
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SOT23, Rail-to-Rail, Fixed-Gain GainAmps/Open-Loop Op Amps
ELECTRICAL CHARACTERISTICS--MAX4174/MAX4175/MAX4274/MAX4275 Fixed-Gain Amplifiers (continued)
(VCC = +2.5V to +5.5V, VEE = 0, VIN+ = VIN- = VCC / 2, RL to VCC / 2, RL = open, TA = TMIN to TMAX, unless otherwise noted. Typical PARAMETER Power-Up Time Slew Rate Settling Time to Within 0.01% Input Noise Voltage Density Input Noise Current Density Capacitive Load Stability DC Gain Accuracy en in CLOAD SR SYMBOL CONDITIONS Output settling to 1% VCC = 5V, VOUT = 4V step VCC = 5V, VOUT = 4V step f = 10kHz (Note 5) f = 10kHz No sustained oscillations (VEE + 25mV) < VOUT < (VCC - 25mV), RL = 100k (Note 6) Gain = +1.25V/V Gain = +3V/V -3dB Bandwidth BW-3dB Gain = +5V/V Gain = +10V/V Gain = +25V/V Gain = +51V/V MIN TYP 1 0.7 7 90 4 470 0.1 1700 970 970 640 590 330 kHz 0.5 MAX UNITS ms V/µs µs nV/Hz fA/Hz pF %
MAX4174/5, MAX4274/5, MAX4281/2/4
ELECTRICAL CHARACTERISTICS--MAX4281/MAX4282/MAX4284 Open-Loop Op Amps
(VCC = +2.5V to +5.5V, VEE = 0, VIN+ = VIN- = VCC / 2, RL to VCC / 2, RL = open, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range Supply Current (per Amplifier) Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Input Resistance Input Capacitance Common-Mode Input Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Closed-Loop Output Impedance IBIAS IOS RIN CIN CMVR CMRR PSRR ROUT Guaranteed by CMRR test VEE - 0.15V VCM VCC - 1.2V VCC = 2.5V to 5.5V AV = 1V/V VEE - 0.15 60 70 90 90 0.02 Differential or common mode SYMBOL VCC ICC VOS VCC = 3V VCC = 5V RL = 100k CONDITIONS Guaranteed by PSRR tests MIN 2.5 290 320 ±0.5 ±5 ±0.05 ±10 1000 2.5 VCC - 1.2 ±10 ±1000 TYP MAX 5.5 450 500 ±2 UNITS V µA µA mV µV/°C nA pA M pF V dB dB
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