View MAX4484_167575.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-1823, Rev 0; 10/00
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps
General Description
The MAX4484/MAX4486/MAX4487 single/dual/quad low-cost general-purpose op amps operate from a single +2.7V to +5.5V supply. The op amps are unity-gain stable with a 7MHz gain-bandwidth product, capable of driving an external 2k load with Rail-to-Rail(R) output swing. The amplifiers are stable with capacitive loads of up to 100pF. The MAX4484/MAX4486/MAX4487 are specified from -40C to +125C, making them suitable for a variety of harsh environments, such as automotive. The single MAX4484 is available in the ultra-small 5-pin SC70, while the dual MAX4486 is packaged in the space-saving 8-pin SOT23 and MAX packages. The quad MAX4487 is available in the 14-pin SO and TSSOP packages.
____________________________Features
o 7MHz Unity-Gain Stable Bandwidth o Stable for Capacitive Loads up to 100pF o +2.7V to +5.5V Single-Supply Voltage Range o Ground-Sensing Inputs o Outputs Swing Rail-to-Rail o No Phase Reversal for Overdriven Inputs o 85dB AVOL with 2k Load o 0.01% THD with 2k Load o Available in Space-Saving Packages 5-Pin SC70 (MAX4484) 8-Pin SOT23 (MAX4486)
MAX4484/MAX4486/MAX4487
________________________Applications
Single-Supply Zero-Crossing Detector Instruments and Terminals Portable Communicators Electronic Ignition Modules Infrared Receivers for Remote Controls Sensor Signal Detection
Ordering Information
PART MAX4484AXK-T MAX4484AUK-T MAX4486AKA-T MAX4486ASA MAX4486AUA TEMP. RANGE -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C PINPACKAGE 5 SC70-5 5 SOT23-5 8 SOT23-8 8 SO 8 MAX 14 TSSOP 14 SO TOP MARK ABQ ADPE AAEP -- -- -- --
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX4487AUD MAX4487ASD
Pin Configurations/Functional Diagrams
MAX4484 IN+ 1 VSS 2 IN- 3 4 OUT 5 VDD OUTA 1 INA- 2 INA+ 3 VSS 4 MAX4486 8 VDD 7 OUTB 6 INB5 INB+ OUTA 1 INA- 2 INA+ 3 VDD 4 INB+ 5 INB- 6 OUTB 7 MAX4487 14 OUTD 13 IND12 IND+ 11 VSS 10 INC+ 9 INC8 OUTC
SC70-5/SOT23-5
SOT23-8/SO-8/MAX
SO-14/TSSOP-14 ________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
ABSOLUTE MAXIMUM RATINGS
Power Supply Voltage (VDD to VSS) .........................-0.3V to +6V All Other Pins....................................(VSS - 0.3V) to (VDD + 0.3V) Output Short-Circuit Duration (OUT shorted to VDD or VSS)...........................................................Continuous Continuous Power Dissipation (TA = +70C) 5-Pin SC70 (derate 3.1mW/C above +70C) ..............247mW 5-Pin SOT23 (derate 7.1mW/C above +70C) ...........571mW 8-Pin SOT23 (derate 9.1mW/C above +70C)............727mW 8-Pin SO (derate 5.88mW/C above +70C)................471mW 8-Pin MAX (derate 4.5mW//C above +70C) ............362mW 14-Pin TSSOP (derate 9.1mW/C above +70C) .........727mW 14-Pin SO (derate 8.33mW/C above +70C)..............667mW Operating Temperature Range .........................-55C to +125C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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--TA = +25C
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = to VDD/2, unless otherwise noted.)
PARAMETER Supply Voltage Range Supply Current per Amplifier SYMBOL VDD IDD VDD = +2.7V VDD = +5.0V MAX4484 Input Offset Voltage Input Bias Current Input Offset Current Input Resistance Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage High Output Voltage Low Output Short-Circuit Current Gain-Bandwidth Product Phase Margin Gain Margin Slew Rate Input Voltage Noise Density Input Current Noise Density VOS IB IOS RIN VCM CMRR PSRR AVOL VOH VOL ISC GBW m Gm SR en in f = 10kHz f = 10kHz MAX4486 MAX4487 (Note 1) (Note 1) Differential or common mode Inferred from CMRR test VSS VCM VDD - 1.3V +2.7V VDD +5.5V VSS + 0.3V VOUT VDD 0.3V Specified as |VDD - VOH| Specified as |VOL - VSS| Sourcing Sinking RL = 100k RL = 2k RL = 100k RL = 2k RL = 100k RL = 2k 76 VSS 67 70 83 85 98 85 3 15 1 20 27 33 7 55 12 20 29 1 50 50 CONDITIONS Inferred from PSRR test MIN 2.7 1.9 2.2 0.3 0.3 0.3 0.1 0.1 1000 VDD 1.3 3.5 5.0 7.0 9.0 100 100 pA pA G V dB dB dB mV mV mA MHz degrees dB V/s nV/Hz fA/Hz mV TYP MAX UNITS 5.5 V mA
2
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps
ELECTRICAL CHARACTERISTICS--TA = +25C (continued)
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = to VDD/2, unless otherwise noted.)
PARAMETER Capacitive-Load Stability Power-On Time Input Capacitance Total Harmonic Distortion Settling Time to 0.01% SYMBOL CLOAD tON CIN THD tS f = 10kHz, VOUT = 2Vp-p, AV = +1V/V VOUT = 4V step, AV = +1V/V RL = 100k RL = 2k CONDITIONS AV = +1V/V (Note 1) MIN 100 1 2 0.006 0.01 450 TYP MAX UNITS pF s pF % ns
MAX4484/MAX4486/MAX4487
ELECTRICAL CHARACTERISTICS--TA = -40C to +125C
(VDD = +5.0V, VSS = 0, VCM = 0, VOUT = VDD/2, RL = to VDD/2, unless otherwise noted.) (Note 2)
PARAMETER Supply Voltage Range Supply Current per Amplifier Input Offset Voltage Input Offset Voltage Drift Input Bias Current Input Offset Current Input Common-Mode Voltage Range Common-Mode Rejection Ratio Power-Supply Rejection Ratio Large-Signal Voltage Gain Output Voltage High Output Voltage Low SYMBOL VDD IDD MAX4484 VOS TCVOS IB IOS VCM CMRR PSRR AVOL VOH VOL (Note 1) (Note 1) Inferred from CMRR test VSS VCM VDD 1.4V +2.7V VDD +5.5V VSS + 0.3V VOUT VDD - 0.3V, RL = 2k |VDD - VOUT|, RL = 2k |VOUT - VSS| RL = 2k TA = -40C to +85C TA = -40C to +125C TA = -40C to +85C TA = -40C to +125C TA = -40C to +85C TA = -40C to +125C TA = -40C to +85C TA = -40C to +125C TA = -40C to +85C TA = -40C to +125C VSS 65 62 67 64 66 62 100 100 100 250 MAX4486 MAX4487 6 100 100 VDD - 1. 4 CONDITIONS Inferred from PSRR test MIN 2.7 TYP MAX 5.5 4.0 8.5 10.0 11.0 V/C pA pA V dB dB dB mV mV mV UNITS V mA
Note 1: Guaranteed by design. Note 2: Specifications are 100% tested at TA = +25C (exceptions marked). All temperature limits are guaranteed by design.
_______________________________________________________________________________________
3
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
Typical Operating Characteristics
(VDD = +5V, VSS = 0, VCM = VDD/2, RL = to VDD/2, unless otherwise noted.)
GAIN AND PHASE vs. FREQUENCY (CL = 0)
MAX4484 toc01
GAIN AND PHASE vs. FREQUENCY WITH CAPACITIVE LOAD
MAX4484 toc02
POWER-SUPPLY REJECTION RATIO vs. FREQUENCY
-10 -20 PSRR (dB) -30 -40 -50 -60
MAX4484 toc03
80 40 GAIN (dB) PHASE (DEGREES) 0 -40 -80 -120 -160 -200 100 AVCL = +1000 1k 10k 100k 1M 10M PHASE GAIN
80 40 GAIN (dB) PHASE (DEGREES) 0 -40 -80 -120 -160 -200 CL = 100pF AVCL = +1000 100 1k 10k 100k 1M 10M GAIN
0
PHASE
-70 -80 100M 1 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) FREQUENCY (Hz)
100M
FREQUENCY (Hz)
SUPPLY CURRENT vs. TEMPERATURE
MAX4484 toc04
OUTPUT IMPEDANCE vs. FREQUENCY
MAX4484 toc05
INPUT OFFSET VOLTAGE vs. TEMPERATURE
0.8 0.7 0.6 VOS (mV) 0.5 0.4 0.3 0.2
MAX4484 toc06
3.0 2.5 CURRENT (mA) 2.0 1.5 1.0 0.5 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
10k 1k OUTPUT IMPEDANCE () 100 10 1 0.1 0.01 100 1k 10k 100k 1M
0.9
0.1 0 10M -40 -20 0 20 40 60 80 100 120 FREQUENCY (Hz) TEMPERATURE (C)
OUTPUT VOLTAGE HIGH vs. TEMPERATURE
MAX4484 toc07
OUTPUT VOLTAGE LOW vs. TEMPERATURE
MAX4484 toc08
NONINVERTING SMALLSIGNAL TRANSIENT RESPONSE
MAX4484 toc09
40 RL = 2k 35 |VDD - VOUT| (mV) 30 25 20 15 10 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
12 10 |VOUT - VSS| (mV) 8 RL = 2k 6 4 2 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
IN
50mV/div
OUT
1s/div
4
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps
Typical Operating Characteristics (continued)
(VDD = +5V, VSS = 0, VCM = VDD/2, RL = to VDD/2, unless otherwise noted.)
NONINVERTING LARGE-SIGNAL TRANSIENT RESPONSE
MAX4484 toc10
MAX4484/MAX4486/MAX4487
PERCENT OVERSHOOT vs. CAPACITIVE LOAD
MAX4484 toc11
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE LOW
RL = 100k
MAX4484 toc12
35 IN PERCENT OVERSHOOT (%) 30 NEGATIVE
110 100 90 GAIN (dB) 80 70 60 RL = 2k
2V/div
25
20 POSITIVE
OUT
15
50 10 400ns/div 0 20 40 60 CLOAD (pF) 80 100 120 40 0 50 100 150 200 250 300 |VOUT - VSS| (mV)
LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE HIGH
RL = 100k
MAX4484 toc13
CROSSTALK vs. FREQUENCY
MAX4484 toc14
POWER-SUPPLY REJECTION RATIO vs. OPERATING VOLTAGE
85 80 75 PSRR (dB) 70 65 60 55 50 45 40 TA = +125C TA = -40C TA = +25C
MAX4484 toc15
110 100 90 GAIN (dB) 80 70 60 RL = 2k
0 -10 -20 CROSSTALK (dB) -30 -40 -50 -60 -70
90
50 40 0 50 100 150 200 |VDD - VOUT| (mV) 250 300
-80 -90 100 1k 10k 100k 1M 10M 100M FREQUENCY (Hz)
1.0
1.5
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY
MAX4484 toc16
TOTAL HARMONIC DISTORTION PLUS NOISE vs. AMPLITUDE
0.12 0.10 THD + N (%) THD + N (%) 0.08 0.06 0.04 0.02 f = 10kHz AVCL = +1 RL = 2k
MAX4484 toc17
TOTAL HARMONIC DISTORTION PLUS NOISE vs. AMPLITUDE
0.12 0.10 0.08 0.06 0.04 0.02 0 f = 10kHz AVCL = +1 RL = 100k
MAX4484 toc18
1 RL = 100k
0.14
0.14
0.1 THD + N (%)
AVCL = +1 0.01
0.001 0.01 0.1 1 10 100 1000 FREQUENCY (kHz)
0 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VIN (Vp-p)
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
VIN (Vp-p)
_______________________________________________________________________________________
5
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
Pin Description
PIN NAME MAX4484 3 1 4 -- -- -- -- -- -- -- -- -- -- -- -- 2 5 MAX4486 -- -- -- 2 3 1 6 5 7 -- -- -- -- -- -- 4 8 MAX4487 -- -- -- 2 3 1 6 5 7 9 10 8 13 12 14 11 4 ININ+ OUT INAINA+ OUTA INBINB+ OUTB INCINC+ OUTC INDIND+ OUTD VSS VDD Inverting Amplifier Input Noninverting Amplifier Input Amplifier Output Inverting Amplifier Input (Channel A) Noninverting Amplifier Input (Channel A) Amplifier Output (Channel A) Inverting Amplifier Input (Channel B) Noninverting Amplifier Input (Channel B) Amplifier Output (Channel B) Inverting Amplifier Input (Channel C) Noninverting Amplifier Input (Channel C) Amplifier Output (Channel C) Inverting Amplifier Input (Channel D) Noninverting Amplifier Input (Channel D) Amplifier Output (Channel D) Negative Power-Supply Voltage Positive Power-Supply Voltage FUNCTION
Detailed Description
Rail-to-Rail Output Stage
The MAX4484/MAX4486/MAX4487 can drive a 2k load and still swing within 50mV of the supply rails. Figure 1 shows the output swing of the MAX4484 configured with AV = +1V/V.
Applications Information
Power Supplies and Layout
The MAX4484/MAX4486/MAX4487 operates from a single +2.7V to +5.5V power supply. Bypass the power supply with 0.1F capacitor to ground. Good layout techniques optimize performance by decreasing the amount of stray capacitance at the op amp's inputs and outputs. To decrease stray capacitance, minimize trace lengths by placing external components close to the op amp's pins. Use surface-mount components for best results.
Driving Capacitive Loads
Driving a capacitive load can cause instability in many op amps, especially those with low quiescent current. The MAX4484/MAX4486/MAX4487 are unity-gain stable for a range of capacitive loads up to 100pF. Figure 2 shows the response of the MAX4484 with an excessive capacitive load. Adding a series resistor between the output and the load capacitor (Figure 3) improves the circuit's response by isolating the load capacitance from the op amp's output.
6
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
RISO 1V/div CL MAX4484 MAX4486 MAX4487
400s/div
Figure 1. Rail-to-Rail Output Operation
Figure 3. Capacitive-Load-Driving Circuit
IN
Chip Information
50mV/div
TRANSISTOR COUNT: MAX4484: 101 MAX4486: 202 MAX4487: 404
OUT
1s/div
Figure 2. Small-Signal Transient Response with Excessive Capacitive Load (CL = 270pF)
_______________________________________________________________________________________
7
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
Package Information
SC70, 5L.EPS
8
_______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps
Package Information (continued)
SOT23, 8L.EPS
MAX4484/MAX4486/MAX4487
_______________________________________________________________________________________
9
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
Package Information (continued)
SOT5L.EPS
10
______________________________________________________________________________________
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps
Package Information (continued)
SOICN.EPS
MAX4484/MAX4486/MAX4487
______________________________________________________________________________________
11
Single/Dual/Quad, Low-Cost, Single-Supply 7MHz, Rail-to-Rail Op Amps MAX4484/MAX4486/MAX4487
Package Information (continued)
TSSOP,NO PADS.EPS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

▲Up To Search▲

Price & Availability of MAX4484

	To Download MAX4484 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .