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EL5397A
January 22, 2004 FN7197
Data Sheet
Triple 200MHz Fixed Gain Amplifier with Enable
The EL5397A is a triple channel, fixed gain amplifier with a bandwidth of 200MHz, making these amplifiers ideal for today's high speed video and monitor applications. The EL5397A 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 4mA 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 EL5397A 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 EL5397A is offered in the 16-pin QSOP package, as well as a 16-pin SO (0.150"). The EL5397A is specified for operation over the full industrial temperature range of -40C to +85C.
Features
* Gain selectable (+1, -1, +2) * 200MHz -3dB bandwidth (AV = 1, 2) * 4mA supply current (per amplifier) * Single and dual supply operation, from 5V to 10V or 2.5V to 5V * Fast enable/disable * Available in 16-pin QSOP package * Single (EL5197) available * 400MHz, 9mA products available (EL5196 & EL5396)
Applications
* Battery-powered equipment * Hand-held, portable devices * Video amplifiers * Cable drivers * RGB amplifiers * Test equipment
Pinout
EL5397A [16-PIN SO (0.150"), QSOP] TOP VIEW
* Instrumentation * Current to voltage converters
INA+
1
16 INA-
Ordering Information
PART NUMBER EL5397ACS EL5397ACS-T7 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 MDP0040
CEA
2
+
15 OUTA
VS-
3 + -
14 VS+
CEB
4
13 OUTB
EL5397ACS-T13 EL5397ACU EL5397ACU-T13
INB+
5
12 INB-
NC
6 + -
11 NC
CEC
7
10 OUTC
INC+
8
9
INC-
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.
EL5397A
Absolute Maximum Ratings (TA = 25C)
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . . 11V Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125C 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
200 200 200 20
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 1800
2100 12 67 4.8 17 50 0.03 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 -2 320 400 -10 1 5 2 480 10 mV V/C %
INPUT CHARACTERISTICS CMIR +IIN -IIN RIN CIN Common Mode Input Range + Input Current - Input Current Input Resistance Input Capacitance 3V -60 -30 3.3V 1 1 45 0.5 60 30 V A A k pF
OUTPUT CHARACTERISTICS VO Output Voltage Swing RL = 150 to GND RL = 1k to GND IOUT SUPPLY ISON ISOFF Supply Current - Enabled Supply Current - Disabled No load, VIN = 0V No load, VIN = 0V 3 4 100 5 150 mA A Output Current RL = 10 to GND 3.4V 3.8V 95 3.7V 4.0V 120 V V mA
2
EL5397A
Electrical Specifications
PARAMETER PSRR -IPSR ENABLE tEN tDIS IIHCE IILCE VIHCE VILCE NOTES: 1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz 2. Measured from the application of CE logic until the output voltage is at the 50% point between initial and final values Enable Time (Note 2) Disable Time (Note 2) CE Pin Input High Current CE Pin Input Low Current CE Input High Voltage for Powerdown CE Input Low Voltage for Power-up CE = VS+ CE = VSVS+ -1 VS+ - 3 40 600 0.8 0 6 -0.1 ns ns A A V V VS+ = +5V, VS- = -5V, RL = 150, TA = 25C unless otherwise specified. (Continued) CONDITIONS DC, VS = 4.75V to 5.25V DC, VS = 4.75V to 5.25V MIN 55 -2 TYP 75 2 MAX UNIT dB A/V
DESCRIPTION Power Supply Rejection Ratio - Input Current Power Supply Rejection
3
EL5397A Typical Performance Curves
Frequency Response (Gain) 6 AV=-1 Normalized Magnitude (dB) 2 AV=2 0 90 Frequency Response (Phase), All Gains
Phase ()
-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 22pF added Delay (ns) 6 10pF added 2 2.5 2 1.5 1 -2 0pF added 0.5 3.5 3
Group Delay vs Frequency
AV=2
AV=1
RL=150 -6 1M 10M 100M Frequency (Hz) 1G 0 1M 10M 100M Frequency (Hz) 1G
Frequency Response for Various Common-Mode Input Voltages 6 3V Normalized Magnitude (dB) 2 0V -2 Magnitude () 100k -3V 1M 10M
Transimpedance (ROL) vs Frequency
Phase
0
-90 Phase ()
-180 10k ROL -270
-6
-10 AV=2 RL=150 -14 1M 10M 100M Frequency (Hz) 1G
1k -360 100 1k
10k
100k
1M Frequency (Hz)
10M
100M
1G
4
EL5397A Typical Performance Curves
PSRR and CMRR vs Frequency 20 250 RL=150 0 PSRR/CMRR (dB) PSRR+ -3dB Bandwidth (MHz) 200 AV=2
(Continued)
-3dB Bandwidth vs Supply Voltage
-20
PSRR-
-40 CMRR -60
150
AV=-1
AV=1
-80 10k
100 100k 1M 10M 100M 1G 5 6 7 8 9 10 Frequency (Hz)
Total Supply Voltage (V)
Peaking vs Supply Voltage 5 300
-3dB Bandwidth vs Temperature
4
250 AV=1 -3dB Bandwidth (MHz) AV=-1
200
Peaking (dB)
3 AV=2 2
150
100
1 RL=150 0 5 6 7 8 9 10
50 RL=150 0 -40 10 60 Ambient Temperature (C) 110 160
Total Supply Voltage (V)
Peaking vs Temperature 1 1k
Voltage and Current Noise vs Frequency
0.8 Voltage Noise (nV/Hz) Current Noise (pA/Hz) 100 in+ in10
Peaking (dB)
0.6
0.4
en
0.2 RL=150 0 -40 10 60 Ambient Temperature (C) 110 160 1 100 1k 10k 100k 1M 10M
Frequency (Hz)
5
EL5397A Typical Performance Curves
(Continued)
Closed Loop Output Impedance vs Frequency 100 10
Supply Current vs Supply Voltage
10 Output Impedance () Supply Current (mA)
8
1
6
0.1
4
0.01
2
0.001 100 1k 10k 100k 1M 10M 100M 1G
0 0 2 4 6 Supply Voltage (V) 8 10 12
Frequency (Hz)
2nd and 3rd Harmonic Distortion vs Frequency -20 -30 Harmonic Distortion (dBc) -40 -50 -60 -70 -80 -90 1 10 Frequency (MHz) 100 2nd Order Distortion 3rd Order Distortion AV=+2 VOUT=2VP-P RL=100 25 20 Input Power Intercept (dBm) 15 10 5 0 -5
Two-Tone 3rd Order Input Referred Intermodulation Intercept (IIP3) AV=+2 RL=150
AV=+2 RL=100 100 Frequency (MHz)
-10 10
Differential Gain/Phase vs DC Input Voltage at 3.58MHz 0.03 AV=2 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 (%) or dP () dG dP 0.03 0.02 0.01 0 -0.01 -0.02 -0.03 0.04
Differential Gain/Phase vs DC Input Voltage at 3.58MHz
AV=1 dP
dG
-0.04 -1
-0.5
0 DC Input Voltage
0.5
1
6
EL5397A 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=500 6 RL=150 4 10
(Continued)
Output Voltage Swing vs Frequency THD<0.1%
4
2 AV=2 0 1 10 Frequency (MHz) 100
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 600 Settling Time (ns) 15 RoI (k) 575 625
Transimpedance (RoI) vs Temperature
20
10
550 5
0 0.01
0.1 Settling Accuracy (%)
1
525 -40
10
60 Die Temperature (C)
110
160
7
EL5397A Typical Performance Curves
Frequency Response (Gain) 8-Pin SO (0.150") Package 6 AV=-1 Normalized Magnitude (dB) 2 AV=2 0 90
(Continued)
Frequency Response (Phase) 8-Pin SO (0.150") Package
-6
Phase ()
-2
AV=1
-90
-180
-10 RL=150 -14 1M 10M 100M Frequency (Hz) 1G
-270 RL=150 -360 1M 10M 100M Frequency (Hz) 1G
PSRR and CMRR vs Temperature 90 80 70 60 50 40 30 0 20 10 -40 CMRR ICMR/IPSR (A/V) PSRR/CMRR (dB) 1 PSRR 1.5 2
ICMR and IPSR vs Temperature
ICMR+
IPSR 0.5
ICMR-
10
60 Die Temperature (C)
110
160
-0.5 -40
10
60 Die Temperature (C)
110
160
Offset Voltage vs Temperature 2 60
Input Current vs Temperature
40 1 Input Current (A) 20 IB0
VOS (mV)
0
-20
IB+
-1 -40
-2 -40
10
60 Die Temperature (C)
110
160
-60 -40
10
60 Die Temperature (C)
110
160
8
EL5397A Typical Performance Curves
(Continued)
Positive Input Resistance vs Temperature 60 5
Supply Current vs Temperature
50 Supply Current (mA)
4
40 RIN+ (k)
3
30
2
20
10
1
0 -40
10
60 Die Temperature (C)
110
160
0 -40
10
60 Die Temperature (C)
110
160
Positive Output Swing vs Temperature for Various Loads 4.2 4.1 1k 4 VOUT (V) 3.9 3.8 3.7 3.6 3.5 -40 150 -3.7 VOUT (V) -3.8 -3.9 -4 -3.5 -3.6
Negative Output Swing vs Temperature for Various Loads
150
1k -4.1 -4.2 -40
10
60 Die Temperature (C)
110
160
10
60 Die Temperature (C)
110
160
Output Current vs Temperature 130 4000
Slew Rate vs Temperature
Sink Slew Rate (V/S) 125 IOUT (mA) 3500
Source 120
3000
AV=2 RL=150 115 -40 10 60 Die Temperature (C) 110 160 2500 -40 10 60 Die Temperature (C) 110 160
9
EL5397A Typical Performance Curves
Enable Response
(Continued)
Disable Response
500mV/div
500mV/div
5V/div 5V/div
20ns/div
400ns/div
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 0.2 0.1 0 -50 -40 633mW
SO 16
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
QS O P1 15 6 8 C/ W
") 50 .1 (0 /W C 80
893mW
Q SO P1 11 6 2 C/ W
-25
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
EL5397A 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
EL5397A Applications Information
Product Description
The EL5397A is a triple channel fixed gain amplifier that offers a wide -3dB bandwidth of 200MHz and a low supply current of 4mA. The EL5397A 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 EL5397A 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 EL5397A 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 EL5397A will operate on dual supplies ranging from 2.5V to 5V. With single-supply, the EL5397A 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 EL5397A has an input range which extends to within 2V of either supply. So, for example, on 5V supplies, the EL5397A has an input range which spans 3V. The output range of the EL5397A 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 EL5397A amplifier can be disabled placing its output in a high impedance state. When disabled, the amplifier supply current is reduced to < 150A. The EL5397A 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 EL5397A 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 EL5397A 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 EL5397A 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
EL5397A
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 EL5397A 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 EL5397A, 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 EL5397A 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 4mA supply current of each EL5397A amplifier. Special circuitry has been incorporated in the EL5397A to reduce the variation of output impedance with current output. This results in dG and dP specifications of 0.03% 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 EL5397A has dG and dP specifications of 0.03% and 0.04, 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 --------------------------RL
Output Drive Capability
In spite of its low 4mA of supply current, the EL5397A 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 EL5397A from the cable and allow extensive capacitive drive. However, other applications may have high
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Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
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