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EL5396A
January 22, 2004 FN7196
Data Sheet
Triple 400MHz Fixed Gain Amplifier with Enable
The EL5396A is a triple channel, fixed gain amplifier with a bandwidth of 400MHz, making these amplifiers ideal for today's high speed video and monitor applications. The EL5396A features internal gain setting resistors and can be configured in a gain of +1, -1 or +2. The same bandwidth is seen in both gain-of-1 and gain-of-2 applications. With a supply current of just 9mA per amplifier and the ability to run from a single supply voltage from 5V to 10V, these amplifiers are also ideal for hand held, portable or battery powered equipment. The EL5396A also incorporates an enable and disable function to reduce the supply current to 100A typical per amplifier. Allowing the CE pin to float or applying a low logic level will enable the amplifier. For applications where board space is critical, the EL5396A is offered in the 16-pin QSOP package, as well as a 16-pin SO (0.150"). The EL5396A is specified for operation over the full industrial temperature range of -40C to +85C.
Features
* Gain selectable (+1, -1, +2) * 400MHz -3dB bandwidth (AV = 1, 2) * 9mA supply current (per amplifier) * Single and dual supply operation, from 5V to 10V or 2.5V to 5V * Fast enable/disable * Power-down * Available in 16-pin QSOP package * Single (EL5196) available * 200MHz, 3mA products available (EL5197 & EL5397)
Applications
* Video amplifiers * Cable drivers * RGB amplifiers * Test equipment * Instrumentation * Current to voltage converters
Ordering Information
PART NUMBER EL5396ACS EL5396ACS-T7 EL5396ACS-T13 EL5396ACU EL5396ACU-T13 PACKAGE 16-Pin SO (0.150") 16-Pin SO (0.150") 16-Pin SO (0.150") 16-Pin QSOP 16-Pin QSOP TAPE & REEL 7" 13" 13" PKG. NO. MDP0027 MDP0027 MDP0027 MDP0040
Pinout
EL5396A [16-PIN SO (0.150"), QSOP] TOP VIEW
INA+ 1 CEA 2 +
16 INA15 OUTA 14 VS+ + 13 OUTB 12 INB11 NC + 10 OUTC 9 INC-
MDP0040
VS- 3 CEB 4 INB+ 5 NC 6 CEC 7 INC+ 8
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc. All other trademarks mentioned are the property of their respective owners.
EL5396A
Absolute Maximum Ratings (TA = 25C)
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . . 11V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125C Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3V Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . -65C to +150C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . -40C to +85C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications
PARAMETER AC PERFORMANCE BW -3dB Bandwidth
VS+ = +5V, VS- = -5V, RL = 150, TA = 25C unless otherwise specified. CONDITIONS MIN TYP MAX UNIT
DESCRIPTION
AV = +1 AV = +2 AV = -1
400 400 400 35
MHz MHz MHz MHz V/s ns dB nV/Hz pA/Hz pA/Hz %
BW1 SR tS CS eN iNiN+ dG dP
0.1dB Bandwidth Slew Rate 0.1% Settling Time Channel Separation Input Voltage Noise IN- Input Current Noise IN+ Input Current Noise Differential Gain Error (Note 1) Differential Phase Error (Note 1) AV = +2 AV = +2 VO = -2.5V to +2.5V, AV = +2 VOUT = -2.5V to +2.5V, AV = -1 f = 5MHz 2400
2600 9 68 3.8 25 55 0.035 0.04
DC PERFORMANCE VOS TCVOS AE RF, RG Offset Voltage Input Offset Voltage Temperature Coefficient Gain Error Internal RF and RG Measured from TMIN to TMAX VO = -3V to +3V -2 320 -15 1 5 1.3 400 2 480 15 mV V/C %
INPUT CHARACTERISTICS CMIR +IIN -IIN RIN CIN Common Mode Input Range + Input Current - Input Current Input Resistance Input Capacitance 3V -120 -40 3.3V 40 4 27 0.5 120 40 V A A k pF
OUTPUT CHARACTERISTICS VO Output Voltage Swing RL = 150 to GND RL = 1k to GND IOUT Output Current RL = 10 to GND 3.4V 3.8V 95 3.7V 4.0V 120 V V mA
ENABLE (SELECTED PACKAGES ONLY) tEN tDIS Enable Time Disable Time (Note 2) 40 600 ns ns
2
EL5396A
Electrical Specifications
PARAMETER IIHCE IILCE VIHCE VILCE SUPPLY ISON ISOFF PSRR -IPSR NOTES: 1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz 2. Measured from the application of CE logic signal until the output voltage is at the 50% point between initial and final values Supply Current - Enabled (per amplifier) No load, VIN = 0V, CE = -5V Supply Current - Disabled (per amplifier) Power Supply Rejection Ratio No load, VIN = 0V, CE = +4.5V DC, VS = 4.75V to 5.25V 55 -2 8 9 100 75 2 11 150 mA A dB A/V VS+ = +5V, VS- = -5V, RL = 150, TA = 25C unless otherwise specified. (Continued) CONDITIONS CE = VS+ CE = VSVS+ 1 VS+ -3 MIN TYP 0.8 0 MAX 6 -0.1 UNIT A A V V
DESCRIPTION CE pin Input High Current CE pin Input Low Current CE pin Input High Voltage for Power Down CE pin Input Low Voltage for Power Up
- Input Current Power Supply Rejection DC, VS = 4.75V to 5.25V
3
EL5396A Typical Performance Curves
Frequency Response (Gain) 6 90 Frequency Response (Phase)
Normalized Magnitude (dB)
2
AV=-1
0 All Gains Phase ()
-2
AV=2 AV=1
-90
-6
-180
-10 RL=150 -14 1M 10M 100M Frequency (Hz) 1G
-270 RL=150 -360 1M 10M 100M Frequency (Hz) 1G
Frequency Response for Various CL 14 AV=2 RL=150 Normalized Magnitude (dB) 10 8pF added 4pF added Delay (ns) 6 -2.5 -2 -1.5 -1 -2 0pF added -0.5 -6 1M -3.5
Group Delay vs Frequency, All Gains
RL=150 -3
All Gains
2
10M
100M Frequency (Hz)
1G
0 1M
10M
100M Frequency (Hz)
1G
Frequency Response for Various Common-Mode Input Voltages 6 VCM=3V Normalized Magnitude (dB) 2 1M 10M
Transimpedance (ROL) vs Frequency
0 Phase -90 Phase ()
-2
Magnitude ()
100k -180 10k ROL -270
-6
VCM=-3V
-10 AV=2 RL=150 -14 1M 10M VCM=0V
1k -360 100 1k
100M Frequency (Hz)
1G
10k
100k
1M Frequency (Hz)
10M
100M
1G
4
EL5396A Typical Performance Curves
PSRR and CMRR vs Frequency 20 450 AV=1 0 PSRR/CMRR (dB) PSRR+ -3dB Bandwidth (MHz) 400 AV=2 AV=-1
(Continued)
-3dB Bandwidth vs Supply Voltage
-20 PSRR1 -40
350
-60
CMRR
RL=150 -80 10k 300 100k 1M 10M 100M 1G 5 6 7 8 9 10 Frequency (Hz)
Total Supply Voltage (V)
Peaking vs Supply Voltage 4 600
-3dB Bandwidth vs Temperature
500 -3dB Bandwidth (MHz) 3 Peaking (dB) AV=1 2 AV=2 1 AV=-1
400
300
200
100 RL=150 0 5 6 7 8 9 10 0 -40 RL=150 10 60 Ambient Temperature (C) 110 160
Total Supply Voltage (V)
Peaking vs Temperature 0.6 RL=150 0.5 Voltage Noise (nV/Hz) Current Noise (pA/Hz) 1k
Voltage and Current Noise vs Frequency
0.4 Peaking (dB)
100 in-
in +
0.3
0.2
10
en
0.1
0 -40
10
60 Ambient Temperature (C)
110
160
1 100
1k
10k
100k
1M
10M
Frequency (Hz)
5
EL5396A Typical Performance Curves
(Continued)
Closed Loop Output Impedance vs Frequency 100 10
Supply Current vs Supply Voltage
10 Output Impedance () Supply Current (mA)
8
6
1
4
0.1
2
0.01
0
0.001 100 10k 1M Frequency (Hz) 100M 1G
-2 0 2 4 6 Supply Voltage (V) 8 10 12
2nd and 3rd Harmonic Distortion vs Frequency -10 -20 Harmonic Distortion (dBc) -30 -40 -50 -60 -70 -80 -90 1 10 Frequency (MHz) 100 200 3rd Order Distortion 2nd Order Distortion AV=+2 VOUT=2VP-P RL=100 30 25 Input Power Intercept (dBm) 20 15 10 5 0 -5 -10
Two-Tone 3rd Order Input Referred Intermodulation Intercept (IIP3)
AV=+2 RL=100 100 Frequency (MHz) 200
-15 10
Differential Gain/Phase vs DC Input Voltage at 3.58MHz 0.03 0.02 0.01 dG (%) or dP () 0 -0.01 -0.02 -0.03 -0.04 -0.05 -1 -0.5 0 DC Input Voltage 0.5 1 dG dG (%) or dP () AV=2 RL=150 dP 0.03
Differential Gain/Phase vs DC Input Voltage at 3.58MHz
AV=1 0.02 dP 0.01 0 -0.01 -0.02 -0.03 -0.04 -1
dG
-0.5
0 DC Input Voltage
0.5
1
6
EL5396A Typical Performance Curves
Output Voltage Swing vs Frequency THD<1% 10 RL=500 Output Voltage Swing (VPP) Output Voltage Swing (VPP) 8 RL=150 6 8 RL=150 6 10 RL=500
(Continued)
Output Voltage Swing vs Frequency THD<0.1%
4
4
2 AV=2 0 1 10 Frequency (MHz) 100 200
2 AV=2 0 1 10 Frequency (MHz) 100
Small Signal Step Response
Large Signal Step Response
VS=5V RL=150 AV=2
VS=5V RL=150 AV=2
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy 25 AV=2 RL=150 VSTEP=5VP-P output 375 350 325 Settling Time (ns) 15 RoI (k) 300 275 250 5 225 0 0.01
Transimpedance (RoI) vs Temperature
20
10
0.1 Settling Accuracy (%)
1
200 -40
10
60 Die Temperature (C)
110
160
7
EL5396A Typical Performance Curves
PSRR and CMRR vs Temperature 90 2.5 2 1.5 ICMR/IPSR (A/V) 1 0.5 0 -0.5 10 -40 -1 -40 ICMRIPSR ICMR+
(Continued)
ICMR and IPSR vs Temperature
PSRR 70 PSRR/CMRR (dB)
50 CMRR 30
10
60 Die Temperature (C)
110
160
10
60 Die Temperature (C)
110
160
Offset Voltage vs Temperature 2 140 120 100 Input Current (A) 1 VOS (mV) 80 60 40 20
Input Current vs Temperature
IB+
0
IB0 -1 -40 -20 -40
10
60 Die Temperature (C)
110
160
10
60 Die Temperature (C)
110
160
Positive Input Resistance vs Temperature 35 30 25 RIN (k) 20 15 10 5 0 -40 10
Supply Current vs Temperature
Supply Current (mA)
9
10
60 Die Temperature (C)
110
160
8 -40
10
60 Die Temperature (C)
110
160
8
EL5396A Typical Performance Curves
(Continued)
Positive Output Swing vs Temperature for Various Loads 4.2 4.1 1k 4 VOUT (V) VOUT (V) 3.9 3.8 3.7 3.6 3.5 -40 150 -3.7 -3.8 -3.9 -4 -4.1 -3.5 -3.6
Negative Output Swing vs Temperature for Various Loads
150
1k
10
60 Die Temperature (C)
110
160
-4.2 -40
10
60 Die Temperature (C)
110
160
Output Current vs Temperature 140 5000
Slew Rate vs Temperature
135
Sink 4500
AV=2 RL=150
IOUT (mA)
130
Slew Rate (V/S) Source 10 60 Die Temperature (C) 110 160
4000
125
3500
120
115 -40
3000 -40
10
60 Die Temperature (C)
110
160
Enable Response
Disable Response
500mV/div
500mV/div
5V/div 5V/div
20ns/div
400ns/div
9
EL5396A Typical Performance Curves
(Continued)
Package Power Dissipation vs Ambient Temperature JEDEC JESD51-3 Low Effective Thermal Conductivity Test Board 1 0.9 909mW 0.8 Power Dissipation (W) 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 -50 -40 -25 0.2 633mW
16 SO
Package Power Dissipation vs Ambient Temperature JEDEC JESD51-7 High Effective Thermal Conductivity Test Board 1.4
16 SO
1.2 Power Dissipation (W) 1 0.8 0.6 0.4
1.250W
") 50 .1 (0 W C/ 0 11
Q SO P1 15 6 8 C/ W
") 50 .1 (0 /W C 80
893mW
Q SO P1 11 6 2 C/ W
0
25
50
75 85
100
125
0 -50 -40
-25
0
25
50
75 85
100
125
Ambient Temperature (C)
Ambient Temperature (C)
10
EL5396A Pin Descriptions
16-PIN SO (0.150") 1 16-PIN QSOP 1 PIN NAME INA+ FUNCTION Non-inverting input, channel A EQUIVALENT CIRCUIT
IN+
RG RF
IN-
Circuit 1
2
2
CEA
Chip enable, channel A
CE
Circuit 2
3 4 5 6, 11 7 8 9 10
3 4 5 6, 11 7 8 9 10
VSCEB INB+ NC CEC INC+ INCOUTC
Negative supply Chip enable, channel B Non-inverting input, channel B Not connected Chip enable, channel C Non-inverting input, channel C Inverting input, channel C Output, channel C (See circuit 2) (See circuit 1) (See circuit 1) (See circuit 2) (See circuit 1)
OUT RF
Circuit 3
12 13 14 15 16
12 13 14 15 16
INBOUTB VS+ OUTA INA-
Inverting input, channel B Output, channel B Positive supply Output, channel A Inverting input, channel A
(See circuit 1) (See circuit 3)
(See circuit 3) (See circuit 1)
11
EL5396A Applications Information
Product Description
The EL5396A is a triple channel fixed gain amplifier that offers a wide -3dB bandwidth of 400MHz and a low supply current of 9mA per amplifier. The EL5396A works with supply voltages ranging from a single 5V to 10V and they are also capable of swinging to within 1V of either supply on the output. This combination of high bandwidth and low power, together with aggressive pricing make the EL5396A the ideal choice for many low-power/high-bandwidth applications such as portable, handheld, or battery-powered equipment. For varying bandwidth and higher gains, consider the EL5191 with 1GHz on a 9mA supply current or the EL5193 with 300MHz on a 4mA supply current. Versions include single, dual, and triple amp packages with 5-pin SOT23, 16pin QSOP, and 8-pin or 16-pin SO outlines. temperature and process, external resistor should not be used to adjust the gain settings.
400 400 ININ+ +
FIGURE 1. AV = +2
400 400 ININ+ +
FIGURE 2. AV = -1
Power Supply Bypassing and Printed Circuit Board Layout
As with any high frequency device, good printed circuit board layout is necessary for optimum performance. Low impedance ground plane construction is essential. Surface mount components are recommended, but if leaded components are used, lead lengths should be as short as possible. The power supply pins must be well bypassed to reduce the risk of oscillation. The combination of a 4.7F tantalum capacitor in parallel with a 0.01F capacitor has been shown to work well when placed at each supply pin.
400 IN400 + IN+
FIGURE 3. AV = +1
Supply Voltage Range and Single-Supply Operation
The EL5396A has been designed to operate with supply voltages having a span of greater than or equal to 5V and less than 11V. In practical terms, this means that the EL5396A will operate on dual supplies ranging from 2.5V to 5V. With single-supply, the EL5396A will operate from 5V to 10V. As supply voltages continue to decrease, it becomes necessary to provide input and output voltage ranges that can get as close as possible to the supply voltages. The EL5396A has an input range which extends to within 2V of either supply. So, for example, on 5V supplies, the EL5396A has an input range which spans 3V. The output range of the EL5396A is also quite large, extending to within 1V of the supply rail. On a 5V supply, the output is therefore capable of swinging from -4V to +4V. Single-supply output range is larger because of the increased negative swing due to the external pull-down resistor to ground. Figure 4 shows
Disable/Power-Down
The EL5396A amplifier can be disabled placing its output in a high impedance state. When disabled, the amplifier supply current is reduced to < 150A. The EL5396A is disabled when its CE pin is pulled up to within 1V of the positive supply. Similarly, the amplifier is enabled by floating or pulling its CE pin to at least 3V below the positive supply. For 5V supply, this means that an EL5396A amplifier will be enabled when CE is 2V or less, and disabled when CE is above 4V. Although the logic levels are not standard TTL, this choice of logic voltages allows the EL5396A to be enabled by tying CE to ground, even in 5V single supply applications. The CE pin can be driven from CMOS outputs.
Gain Setting
The EL5396A is built with internal feedback and gain resistors. The internal feedback resistors have equal value; as a result, the amplifier can be configured into gain of +1, -1, and +2 without any external resistors. Figure 1 shows the amplifier in gain of +2 configuration. The gain error is 2% maximum. Figure 2 shows the amplifier in gain of -1 configuration. For gain of +1, IN+ and IN- should be connected together as shown in Figure 3. This configuration avoids the effects of any parasitic capacitance on the IN- pin. Since the internal feedback and gain resistors change with
12
EL5396A
an AC-coupled, gain of +2, +5V single supply circuit configuration.
400 +5
capacitive loads without a back-termination resistor. In these applications, a small series resistor (usually between 5 and 50) can be placed in series with the output to eliminate most peaking.
Current Limiting
The EL5396A has no internal current-limiting circuitry. If the output is shorted, it is possible to exceed the Absolute Maximum Rating for output current or power dissipation, potentially resulting in the destruction of the device.
400 +5 0.1F 0.1F VIN 1k 1k + VOUT
Power Dissipation
With the high output drive capability of the EL5396A, it is possible to exceed the 125C Absolute Maximum junction temperature under certain very high load current conditions. Generally speaking when RL falls below about 25, it is important to calculate the maximum junction temperature (TJMAX) for the application to determine if power supply voltages, load conditions, or package type need to be modified for the EL5396A to remain in the safe operating area. These parameters are calculated as follows:
T JMAX = T MAX + ( JA x n x PD MAX )
FIGURE 4.
Video Performance
For good video performance, an amplifier is required to maintain the same output impedance and the same frequency response as DC levels are changed at the output. This is especially difficult when driving a standard video load of 150, because of the change in output current with DC level. Previously, good differential gain could only be achieved by running high idle currents through the output transistors (to reduce variations in output impedance.) These currents were typically comparable to the entire 9mA supply current of each EL5396A amplifier. Special circuitry has been incorporated in the EL5396A to reduce the variation of output impedance with current output. This results in dG and dP specifications of 0.0035% and 0.04, while driving 150 at a gain of 2. Video performance has also been measured with a 500 load at a gain of +1. Under these conditions, the EL5396A has dG and dP specifications of 0.03% and 0.05, respectively.
where: TMAX = Maximum ambient temperature JA = Thermal resistance of the package n = Number of amplifiers in the package PDMAX = Maximum power dissipation of each amplifier in the package PDMAX for each amplifier can be calculated as follows:
V OUTMAX PD MAX = ( 2 x V S x I SMAX ) + ( V S - V OUTMAX ) x --------------------------R
L
Output Drive Capability
In spite of its low 9mA of supply current, the EL5396A is capable of providing a minimum of 95mA of output current. With a minimum of 95mA of output drive.
where: VS = Supply voltage ISMAX = Maximum supply current VOUTMAX = Maximum output voltage (required) RL = Load resistance
Driving Cables and Capacitive Loads
When used as a cable driver, double termination is always recommended for reflection-free performance. For those applications, the back-termination series resistor will decouple the EL5396A from the cable and allow extensive capacitive drive. However, other applications may have high
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