Datasheet

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General Description

The MAX4265–MAX4270 ultra-low distortion, voltage-feed-

back op amps are capable of driving a 100Ω load while

maintaining ultra-low distortion over a wide bandwidth.

They offer superior spurious-free dynamic range (SFDR)

performance: -90dBc at 5MHz and -59dBc at 100MHz

(MAX4269). Additionally, input voltage noise density is

8nV/√Hz while operating from a single +4.5V to +8.0V sup-

ply or from dual ±2.25V to ±4.0V supplies. These features

make the MAX4265–MAX4270 ideal for use in high-perfor-

mance communications and signal-processing applica-

tions that require low distortion and wide bandwidth.

The MAX4265 single and MAX4268 dual amplifiers are

unity-gain stable. The MAX4266 single and MAX4269 dual

amplifiers are compensated for a minimum stable gain of

+2V/V, while the MAX4267 single and MAX4270 dual

amplifiers are compensated for a minimum stable gain of

+5V/V.

For additional power savings, these amplifiers feature a

low-power disable mode that reduces supply current

and places the outputs in a high-impedance state. The

MAX4265/MAX4266/MAX4267 are available in a space-

saving 8-pin µMAX

package, and the MAX4268/

MAX4269/MAX4270 are available in a 16-pin QSOP

package.

Applications

Base-Station Amplifiers

IF Amplifiers

High-Frequency ADC Drivers

High-Speed DAC Buffers

RF Telecom Applications

High-Frequency Signal Processing

Features

♦ Operates from +4.5V to +8.0V

♦ Superior SFDR with 100Ω Load

-90dBc (f

= 5MHz)

-59dBc (f

= 100MHz)

♦ 35dBm IP3 (f

= 20MHz)

♦ 8nV/√Hz Voltage Noise Density

♦ 100MHz 0.1dB Gain Flatness (MAX4268)

♦ 900V/µs Slew Rate

♦ ±45mA Output Driving Capability

♦ Disable Mode Places Outputs in High-Impedance

State

MAX4265–MAX4270

Ultra-Low-Distortion, +5V,

400MHz Op Amps with Disable

________________________________________________________________ Maxim Integrated Products 1

19-1552; Rev 2; 8/00

Selector Guide

Ordering Information

Pin Configurations appear at end of data sheet.

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

PART

NO. OF

OP AMPS

MIN GAIN

(V/V)

-3dB

BANDWIDTH (MHz)

MAX4265 1 1 400

MAX4266 1 2 350

MAX4267 1 5 300

MAX4268 2 1 300

MAX4269 2 2 350

MAX4270 2 5 200

FULL-POWER

BANDWIDTH (MHz)

270

350

300

175

200

GBP

(MHz)

400

700

1500

300

700

1000

MAX4270ESD -40°C to +85°C 14 SO

16 QSOP-40°C to +85°C

MAX4270EEE

MAX4269ESD -40°C to +85°C 14 SO

MAX4269EEE

-40°C to +85°C 16 QSOP

14 SO-40°C to +85°CMAX4268ESD

MAX4268EEE

-40°C to +85°C 16 QSOP

8 SO-40°C to +85°CMAX4267ESA

MAX4267EUA

-40°C to +85°C 8 µMAX

8 SO-40°C to +85°CMAX4266ESA

MAX4266EUA

-40°C to +85°C 8 µMAX

8 SO-40°C to +85°CMAX4265ESA

MAX4265EUA

-40°C to +85°C 8 µMAX

PIN-PACKAGETEMP. RANGEPART

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.

Summary of content (19 pages)

PAGE 1
9-1552; Rev 2; 8/00 Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable The MAX4265–MAX4270 ultra-low distortion, voltage-feedback op amps are capable of driving a 100Ω load while maintaining ultra-low distortion over a wide bandwidth. They offer superior spurious-free dynamic range (SFDR) performance: -90dBc at 5MHz and -59dBc at 100MHz (MAX4269). Additionally, input voltage noise density is 8nV/√Hz while operating from a single +4.5V to +8.0V supply or from dual ±2.25V to ±4.0V supplies.
PAGE 2
MAX4265–MAX4270 Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE)...............................................+8.5V Voltage on Any Other Pin .................(VEE - 0.3V) to (VCC + 0.3V) Short-Circuit Duration (VOUT to VCC or VEE) ..............Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin µMAX (derate 4.10mW/°C above +70°C) ..........330mW 16-Pin QSOP (derate 8.33mW/°C above +70°C)........667mW 8-Pin SO (derate 5.9mW/°C above +70°C).
PAGE 3
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable (VCC = +5V, VEE = 0, RL = 100Ω to VCC/2, VCM = VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Small-Signal -3dB Bandwidth Full-Power Bandwidth 0.1dB Gain Flatness SYMBOL BW-3dB FPBW BW0.
PAGE 4
MAX4265–MAX4270 Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable AC ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V, VEE = 0, RL = 100Ω to VCC/2, VCM = VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 5
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable (VCC = +5V, VEE = 0, RL = 100Ω to VCC/2, VCM = VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.
PAGE 6
AC ELECTRICAL CHARACTERISTICS (continued) (VCC = +5V, VEE = 0, RL = 100Ω to VCC/2, VCM = VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL Input -1dB Compression Point CONDITIONS MIN TYP fC = 20MHz MAX UNITS 12 dBm Differential Gain DG NTSC, f = 3.58MHz, RL = 150Ω to VCC/2 0.015 % Differential Phase DP NTSC, f = 3.58MHz, RL = 150Ω to VCC/2 0.
PAGE 7
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable 2 2 MAX4265 -2 MAX4266 -3 MAX4267 -5 -6 10M 100M MAX4266 -2 0 -0.1 -0.2 MAX4267 -0.3 -4 -0.4 -5 -0.5 -6 -0.6 0.1M 1G 1M 10M 100M 0.1M 1G 1G MAX4269 DISTORTION vs. FREQUENCY VOUT = 1Vp-p -20 -30 VOUT = 1Vp-p -30 -40 2ND HARMONIC 3RD HARMONIC -100 DISTORTION (dBc) -70 -50 -60 -70 10 1 -50 -60 -70 -80 2ND HARMONIC -80 -90 3RD HARMONIC -90 100 2ND HARMONIC 3RD HARMONIC -100 -100 0.
PAGE 8
Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0, DISABLE_ = +5V, RL = 100Ω to VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA =+25°C, unless otherwise noted.) MAX4270 DISTORTION vs. LOAD RESISTANCE -60 -70 2ND HARMONIC -80 -90 -40 DISTORTION (dBc) DISTORTION (dBc) -50 -60 -70 -80 -90 3RD HARMONIC 3RD HARMONIC -90 200 300 400 500 600 2ND HARMONIC 100 200 300 400 500 600 3RD HARMONIC 0 0.5 1.5 2.
PAGE 9
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable 10 1 -20 0.1 10 100 1k 10k 100k 1M 10M -60 -80 1M 10M 100M -120 0.1M 1G 1M 10M 100M 1G MAX4266/MAX4269 DIFFERENTIAL GAIN AND PHASE MAX4267/MAX4270 DIFFERENTIAL GAIN AND PHASE 0.020 0.015 0.010 0.005 0.000 -0.005 10 IRE 0.020 0.010 0.000 -0.010 -0.020 -0.
PAGE 10
Typical Operating Characteristics (continued) (VCC = +5V, VEE = 0, DISABLE_ = +5V, RL = 100Ω to VCC/2, MAX4265/MAX4268 AV = +1V/V, MAX4266/MAX4269 AV = +2V/V, MAX4267/MAX4270 AV = +5V/V, TA =+25°C, unless otherwise noted.) POWER-UP/POWER-DOWN RESPONSE INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGE DISABLE/ENABLE RESPONSE -0.90 INPUT TO DISABLE_ 5V 0V 5V DISABLE ENABLE OUTPUT 500mV/div OUTPUT 500mV/div 0V INPUT OFFSET VOLTAGE (mV) VCC 2.5V/div MAX4265/70-32 MAX4265/70-33 MAX4265/70-31 -0.95 -1.
PAGE 11
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable MAX4265/70-41 VOH 3 INPUT 50mV/div INPUT 25mV/div OUTPUT 50mV/div OUTPUT 50mV/div 2 1 VOL 0 -50 -35 -20 -5 10 25 40 55 70 5ns/div 85 5ns/div TEMPERATURE (°C) MAX4267/MAX4270 SMALL-SIGNAL PULSE RESPONSE MAX4265/70-44 MAX4265/70-43 MAX4265/MAX4268 LARGE-SIGNAL PULSE RESPONSE INPUT 10mV/div INPUT 500mV/div OUTPUT 50mV/div OUTPUT 500mV/div 5ns/div MAX4266/MAX4269 LARGE-SIGNAL PULSE RESPONSE MAX4267/MAX4270 LARGE-SIGNAL PULSE R
PAGE 12
MAX4265–MAX4270 Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable Pin Description PIN MAX4268 MAX4269 MAX4270 MAX4265 MAX4266 MAX4267 NAME FUNCTION 8 µMAX/SO 14 SO 16 QSOP 1 — — DISABLE Disable Input. Active low. — 4, 5 4, 5 DISABLEA, DISABLEB Disable Input. Active low.
PAGE 13
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable Unity-Gain Configurations The MAX4265 and MAX4268 are internally compensated for unity gain. When configured for unity gain, they require a small resistor (RF) in series with the feedback path (Figure 1). This resistor improves AC response by reducing the Q of the tank circuit, which is formed by parasitic feedback inductance and capacitance.
PAGE 14
Low-Power Disable Mode The MAX4265–MAX4270 feature an active-low disable mode that can be used to save power and place the outputs in a high-impedance state. Drive DISABLE_ with logic levels, or connect DISABLE_ to VCC for normal operation. In the dual versions (MAX4268/ MAX4269/ MAX4270), each individual op amp is disabled separately, allowing the devices to be used in a multiplex configuration. The supply current in low-power mode is reduced to 1.6mA per amplifier.
PAGE 15
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable 4 4 3 3 CL = 10pF RISO = 12Ω CL = 10pF RISO = 15Ω 1 0 -1 CL = 10pF RISO = 18Ω -2 CL = 22pF RISO = 3.9Ω 1 GAIN (dB) GAIN (dB) 2 CL = 22pF RISO = 22Ω 2 0 -1 CL = 22pF RISO = 6Ω -2 -3 -3 -4 -4 -5 -5 -6 0.1M 1M 10M 100M 1G FREQUENCY (Hz) Figure 4b. MAX4269 Small-Signal Gain vs. Frequency With Isolation Resistor Power Supplies, Bypassing, and Layout The MAX4265–MAX4270 operate from a single +4.5V to +8.
PAGE 16
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable MAX4265–MAX4270 Pin Configurations TOP VIEW DISABLE 1 8 IN- 2 IN+ 3 MAX4265 MAX4266 MAX4267 VEE 4 VCC 7 VCC 6 OUT 5 VEE OUTA 1 16 VCC 13 VCC INA- 2 15 VCC 12 N.C. INA+ 3 14 N.C. 11 N.C. DISABLEA 4 10 INB+ DISABLEB 5 OUTA 1 14 VCC 2 INAINA+ 3 DISABLEA 4 DISABLEB 5 MAX4268 MAX4269 MAX4270 VEE 6 9 INB- VEE 6 VEE 7 8 OUTB VEE 7 µMAX/SO MAX4268 MAX4269 MAX4270 N.C. 8 12 INB+ 11 INB10 OUTB 9 SO QSOP 16 13 N.C.
PAGE 17
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable E Ø0.50±0.1 8 INCHES DIM A A1 A2 b H c D e E H 0.6±0.1 1 L 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.010 0.014 0.005 0.007 0.116 0.120 0.0256 BSC 0.116 0.120 0.188 0.198 0.016 0.026 6° 0° 0.0207 BSC 8LUMAXD.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 5.03 4.78 0.66 0.41 0° 6° 0.
PAGE 18
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.053 0.069 0.004 0.010 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.050 0.016 MAX MIN 1.75 1.35 0.25 0.10 0.49 0.35 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .
PAGE 19
Ultra-Low-Distortion, +5V, 400MHz Op Amps with Disable QSOP.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.