MAX4224 Maxim, MAX4224 Datasheet

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MAX4224

Manufacturer Part Number
MAX4224
Description
The MAX4223-MAX4228 current-feedback amplifiers combine ultra-high-speed performance, low distortion, and excellent video specifications with low-power operation
Manufacturer
Maxim
Datasheet

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The MAX4223–MAX4228 current-feedback amplifiers
combine ultra-high-speed performance, low distortion,
and excellent video specifications with low-power oper-
ation. The MAX4223/MAX4224/MAX4226/MAX4228
have a shutdown feature that reduces power-supply
current to 350µA and places the outputs into a high-
impedance state. These devices operate with dual sup-
plies ranging from ±2.85V to ±5.5V and provide a
typical output drive current of 80mA. The MAX4223/
MAX4225/MAX4226 are optimized for a closed-loop
gain of +1 (0dB) or more and have a -3dB bandwidth of
1GHz, while the MAX4224/MAX4227/MAX4228 are
compensated for a closed-loop gain of +2 (6dB) or
more, and have a -3dB bandwidth of 600MHz (1.2GHz
gain-bandwidth product).
The MAX4223–MAX4228 are ideal for professional video
applications, with differential gain and phase errors of
0.01% and 0.02°, 0.1dB gain flatness of 300MHz, and a
1100V/µs slew rate. Total harmonic distortion (THD) of
-60dBc (10MHz) and an 8ns settling time to 0.1% suit
these devices for driving high-speed analog-to-digital
inputs or for data-communications applications. The low-
power shutdown mode on the MAX4223/MAX4224/
MAX4226/MAX4228 makes them suitable for portable
and battery-powered applications. Their high output
impedance in shutdown mode is excellent for multiplex-
ing applications.
The single MAX4223/MAX4224 are available in space-
saving 6-pin SOT23 packages. All devices are available
in the extended -40°C to +85°C temperature range.
________________________Applications
19-1230; Rev 2a; 6/97
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
Pin Configurations
continued at end
of data sheet.
_________________Pin Configurations
_______________General Description
ADC Input Buffers
Video Cameras
Video Switches
Video Editors
RF Receivers
TOP VIEW
Current-Feedback Amplifiers with Shutdown
OUT
V
IN+
EE
________________________________________________________________ Maxim Integrated Products
1
2
3
SOT23-6
Data Communications
Video Line Drivers
Video Multiplexing
XDSL Drivers
Differential Line Drivers
6
5
4
V
SHDN
IN-
CC
MAX4223
MAX4224
1GHz, Low-Power, SOT23,
Ordering Information continued at end of data sheet.
____________________________Features
_____________________Selector Guide
______________Ordering Information
MAX4223EUT-T
MAX4223ESA
MAX4223
MAX4224
MAX4225
MAX4226
MAX4227
MAX4228
Ultra-High Speed and Fast Settling Time:
Excellent Video Specifications (MAX4223):
Low Distortion:
6.0mA Quiescent Supply Current (per amplifier)
Shutdown Mode:
High Output Drive Capability:
Available in Tiny 6-Pin SOT23 and 10-Pin µMAX
Packages
PART
1GHz -3dB Bandwidth (MAX4223, Gain = +1)
600MHz -3dB Bandwidth (MAX4224, Gain = +2)
1700V/µs Slew Rate (MAX4224)
5ns Settling Time to 0.1% (MAX4224)
Gain Flatness of 0.1dB to 300MHz
0.01%/0.02° DG/DP Errors
-60dBc THD (f
42dBm Third-Order Intercept (f = 30MHz)
350µA Supply Current (per amplifier)
100kΩ Output Impedance
80mA Output Current
Drives up to 4 Back-Terminated 75Ω Loads to
±2.5V while Maintaining Excellent Differential
Gain/Phase Characteristics
PART
GAIN
MIN.
1
2
1
1
2
2
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
c
= 10MHz)
AMPS
PKG.
PER
1
1
2
2
2
2
DOWN
SHUT-
MODE
PACKAGE
Yes
Yes
Yes
Yes
6 SOT23
8 SO
No
No
PIN-
6 SOT23, 8 SO
6 SOT23, 8 SO
PACKAGE
10 µMAX,
10 µMAX,
TOP MARK
14 SO
14 SO
8 SO
8 SO
PIN-
AAAD
SOT
1

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MAX4224 Summary of contents

Page 1

... MAX4226/MAX4228 makes them suitable for portable and battery-powered applications. Their high output impedance in shutdown mode is excellent for multiplex- ing applications. The single MAX4223/MAX4224 are available in space- saving 6-pin SOT23 packages. All devices are available in the extended -40°C to +85°C temperature range. ________________________Applications ...

Page 2

... MIN MAX MAX4225–MAX4228 +25° MIN MAX MAX4223/MAX4224 T = +25°C A MAX4225–MAX4228 MAX4223/MAX4224 MIN MAX MAX4225–MAX4228 Inferred from CMRR test T = +25° ±2. MIN Inferred from PSRR test +25° ...

Page 3

... 100Ω 2Vp-p, OUT f = 10MHz 1kΩ unless otherwise noted. Typical values are at MAX MIN TYP MAX 25 10 100 = +2V/V for MAX4224/MAX4227/ V MIN TYP MAX MAX4223/5/6 750 1000 MAX4224/7/8 325 600 MAX4223/5/6 100 300 MAX4224/7/8 60 200 1.5 0.1 MAX4223/5/6 250 MAX4224/7/8 ...

Page 4

... A = +2V 200 +5V 100 100 1000 FREQUENCY (MHz) = +2V/V for MAX4224/MAX4227/ V MIN TYP MAX UNITS Ω dBm 36 -61 dB -62 20 dBm 2 nV/√Hz 3 pA/√Hz 20 0.3 1.0 pF 0.3 0.8 MAX4223/MAX4225/MAX4226 LARGE-SIGNAL GAIN vs. FREQUENCY (A = +1) VCL 4 ...

Page 5

... FREQUENCY (MHz) MAX4225/MAX4226 CROSSTALK vs. FREQUENCY - 2Vp-p OUT -20 -30 -40 -50 -60 -70 -80 -90 -100 1 10 100 1000 FREQUENCY (MHz) MAX4224/MAX4227/MAX4228 LARGE-SIGNAL GAIN vs. FREQUENCY (A = +2) VCL +2V/V VCL 470 2Vp-p 2 OUT 1000 1 10 ...

Page 6

... L -30 -40 -50 -60 -70 THD 2ND HARMONIC -80 -90 3RD HARMONIC -100 0 100 FREQUENCY (MHz) OUTPUT IMPEDANCE vs. FREQUENCY 100 10 MAX4223/5 +1V/V VCL R = 560 F 1 MAX4224/7 +2V/V 0.1 VCL 470 G F 0.01 0.01 0 100 FREQUENCY (MHz) MAX4223/MAX4225/MAX4226 TOTAL HARMONIC DISTORTION vs. FREQUENCY ( - +1V/V VCL - ...

Page 7

... OUTPUT GND -100mV TIME (10ns/div) MAX4223/MAX4225/MAX4226 LARGE-SIGNAL PULSE RESPONSE ( 25pF) VCL L MAX4223-26 +2V GND INPUT -2V +2V GND OUTPUT -2V TIME (10ns/div) MAX4224/MAX4227/MAX4228 LARGE-SIGNAL PULSE RESPONSE (A = +5) VCL MAX4223-29 +400mV INPUT GND -400mV +2V GND OUTPUT -2V TIME (10ns/div) MAX4223-24 GND GND MAX4223-27 GND GND ...

Page 8

Low-Power, SOT23, Current-Feedback Amplifiers with Shutdown ____________________________Typical Operating Characteristics (continued +5V -5V 100Ω +25°C, unless otherwise noted POWER-SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE 8 7 NORMAL 6 ...

Page 9

... Current-Feedback Amplifiers with Shutdown ______________________________________________________________Pin Description MAX4225 MAX4223/MAX4224 MAX4227 SOT23 SO — — — — — — — — — — — — — — — — — _______________________________________________________________________________________ 1GHz, Low-Power, SOT23, PIN MAX4226/MAX4228 SO µMAX SO — ...

Page 10

... The MAX4223/MAX4225/MAX4226 are optimized for closed-loop gains of +1 (0dB) or more and have -3dB bandwidths of 1GHz. The MAX4224/MAX4227/ MAX4228 are optimized for closed-loop gains of +2 (6dB) or more, and have -3dB bandwidths of 600MHz (1.2GHz gain-bandwidth product). ...

Page 11

... Table 1 shows optimal values for the feedback resistor (R ) and gain-setting resistor (R F MAX4228. Note that the MAX4224/MAX4227/MAX4228 offer superior AC performance for all gains except unity gain (0dB). These values provide optimal AC response using surface-mount resistors and good layout tech- niques. Maxim’s high-speed amplifier evaluation kits provide practical examples of such layout techniques ...

Page 12

... The current noise at the noninverting input ( 3pA/√Hz, and the current noise at the n+ inverting input ( 20pA/√Hz example of DC-error calculations, using the MAX4224 typical data and the typical operating circuit with 470Ω 235Ω) and ...

Page 13

... Fully assembled evaluation boards are available for the MAX4223 in an SO-8 package CABLE Figure 4. Using an Isolation Resistor (R Capacitive Loads Maxim’s High-Speed Evaluation Board Layout R F IN- R ISO OUT IN MAX4223 MAX4224 MAX4225 MAX4226 MAX4227 MAX4228 ) for High ISO ...

Page 14

... AC parameters through volume production testing. These parasitics are greatly reduced when using the recommended PC board layout (like the Maxim evaluation kit). Characterizing the part in this way more accurately rep- resents the amplifier’s true AC performance. Some 50 ...

Page 15

... RISING-EDGE SLEW RATE (V/ s) Figure 6c. MAX4224 Rising-Edge Slew-Rate Distribution ______________________________________________________________________________________ 1GHz, Low-Power, SOT23, 50 100 UNITS 40 SIMULATION 30 LOWER LIMIT ±0.1dB BANDWIDTH (MHz) Figure 6b. MAX4224 ±0.1dB Bandwidth Distribution 50 100 UNITS 40 SIMULATION 30 LOWER LIMIT FALLING-EDGE SLEW RATE (V/ s) Figure 6d. MAX4224 Falling-Edge Slew-Rate Distribution 15 ...

Page 16

... Low-Power, SOT23, Current-Feedback Amplifiers with Shutdown Figure 7a. Maxim SOT23 High-Speed Evaluation Board Component Placement Guide—Component Side Figure 7b. Maxim SOT23 High-Speed Evaluation Board PC Board Layout—Component Side 16 ______________________________________________________________________________________ Figure 7c. Maxim SOT23 High-Speed Evaluation Board PC Board Layout—Back Side ...

Page 17

... Current-Feedback Amplifiers with Shutdown Figure 8a. Maxim SO-8 High-Speed Evaluation Board Component Placement Guide—Component Side Figure 8b. Maxim SO-8 High-Speed Evaluation Board PC Board Layout—Component Side ______________________________________________________________________________________ 1GHz, Low-Power, SOT23, Figure 8c. Maxim SO-8 High-Speed Evaluation Board PC Board Layout—Back Side 17 ...

Page 18

... Low-Power, SOT23, Current-Feedback Amplifiers with Shutdown _____________________________________________Pin Configurations (continued) TOP VIEW MAX4223 MAX4224 N. MAX4226 MAX4228 OUTA 1 2 INA- INA SHDNA MAX 18 ______________________________________________________________________________________ 8 SHDN OUTA OUT 5 N.C. 10 OUTA OUTB 8 INB- 7 INB+ 6 SHDNB ...

Page 19

... SO MAX4228EUB -40°C to +85°C 10 µMAX MAX4228ESD -40°C to +85° ______________________________________________________________________________________ 1GHz, Low-Power, SOT23, ___________________Chip Information PIN- SOT MAX4223/MAX4224 TRANSISTOR COUNT: 87 TOP MARK MAX4225–MAX4228 TRANSISTOR COUNT: 171 AAAE SUBSTRATE CONNECTED TO V — — — — — — — EE ...

Page 20

... Low-Power, SOT23, Current-Feedback Amplifiers with Shutdown ________________________________________________________Package Information 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. 20 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...

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