Intersil EL1516AIYZ Dual ultra low noise amplifier Datasheet

EL1516, EL1516A
®
Data Sheet
May 4, 2005
Dual Ultra Low Noise Amplifier
Features
The EL1516 is a dual, ultra low noise amplifier, ideally suited
to line receiving applications in ADSL, VDSL, and home
PNA designs. With low noise specification of just 1.3nV/√Hz
and 1.5pA/√Hz, the EL1516 is perfect for the detection of
very low amplitude signals.
• EL2227 upgrade replacement
The EL1516 features a -3dB bandwidth of 350MHz @ AV =
-1 and is gain-of-2 stable. The EL1516 also affords minimal
power dissipation with a supply current of just 5.5mA per
amplifier. The amplifier can be powered from supplies
ranging from 5V to 12V.
• Bandwidth (-3dB) of 250MHz @ AV = +2
The EL1516A incorporates an enable and disable function to
reduce the supply current to 5nA typical per amplifier,
allowing the EN pins to float or apply a low logic level will
enable the amplifiers.
• Voltage noise of only 1.3nV/√Hz
• Current noise of only 1.5pA/√Hz
• Bandwidth (-3dB) of 350MHz @ AV = -1
• Gain-of-2 stable
• Just 5.5mA per amplifier
• 100mA IOUT
• Fast enable/disable (EL1516A only)
• 5V to 12V operation
• Pb-free available (RoHS compliant)
The EL1516 is available in space-saving 8-pin MSOP and
industry-standard 8-pin SO packages and the EL1516A is
available in a 10-pin MSOP package. All are specified for
operation over the -40°C to +85°C temperature range.
Applications
Pinouts
• Home PNA receivers
EL1516
(8-PIN SO, MSOP)
TOP VIEW
VOUTA 1
VINA- 2
8 VS+
7 VOUTB
+
VINA+ 3
6 VINB+
VS- 4
FN7328.0
• ADSL receivers
• VDSL receivers
• Ultrasound input amplifiers
• Wideband instrumentation
• Communications equipment
• AGC & PLL active filters
• Wideband sensors
5 VINB+
EL1516A
(10-PIN MSOP)
TOP VIEW
10 VINA-
VINA+ 1
ENA 2
9 VOUTA
VS- 3
8 VS+
ENB 4
7 VOUTB
6 VINB-
VINB+ 5
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 © Intersil Americas Inc. 2005. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
EL1516, EL1516A
Ordering Information
PART
NUMBER
PACKAGE
TAPE &
REEL
PKG. DWG. #
EL1516IY
8-Pin MSOP
-
MDP0043
EL1516IY-T13
8-Pin MSOP
13”
MDP0043
EL1516IY-T7
8-Pin MSOP
7”
MDP0043
EL1516IYZ
(See Note)
8-Pin MSOP
(Pb-free)
-
MDP0043
EL1516IYZ-T13
(See Note)
8-Pin MSOP
(Pb-free)
13”
MDP0043
EL1516IYZ-T7
(See Note)
8-Pin MSOP
(Pb-free)
7”
MDP0043
EL1516IS
8-Pin SO
-
MDP0027
EL1516IS-T13
8-Pin SO
13”
MDP0027
EL1516IS-T7
8-Pin SO
7”
MDP0027
EL1516ISZ
(See Note)
8-Pin SO
(Pb-free)
-
MDP0027
EL1516ISZ-T13
(See Note)
8-Pin SO
(Pb-free)
13”
MDP0027
EL1516ISZ-T7
(See Note)
8-Pin SO
(Pb-free)
7”
MDP0027
EL1516AIY
10-Pin MSOP
-
MDP0043
EL1516AIY-T13
10-Pin MSOP
13”
MDP0043
EL1516AIY-T7
10-Pin MSOP
7”
MDP0043
EL1516AIYZ
(See Note)
10-Pin MSOP
(Pb-free)
-
MDP0043
EL1516AIYZT13 (See Note)
10-Pin MSOP
(Pb-free)
13”
MDP0043
EL1516AIYZ-T7
(See Note)
10-Pin MSOP
(Pb-free)
7”
MDP0043
NOTE: Intersil Pb-free products employ special Pb-free material sets;
molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with
both SnPb and Pb-free soldering operations. Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
2
FN7328.0
May 4, 2005
EL1516, EL1516A
Absolute Maximum Ratings (TA = 25°C)
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . .14V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.3V, VS +0.3V
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 40mA
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
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. Typ 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
VS+ = +2.5V, VS- = -2.5V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless
otherwise specified.
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
-0.2
+3
mV
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
TCVOS
Average Offset Voltage Drift
IB
Input Bias Current
IOS
VCM = 0V
-0.3
VCM = 0V
µV/°C
6.5
9
µA
Input Offset Current
50
500
nA
RIN
Input Impedance
2
MΩ
CIN
Input Capacitance
1.6
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -4.7V to 5.4V
85
105
dB
AVOL
Open-Loop Gain
VO = ±1.25V
70
75
dB
en
Voltage Noise
f = 100kHz
1.24
nV/√Hz
in
Current Noise
f = 100kHz
1.5
pA/√Hz
RL = 500Ω
1.45
1.35
V
RL = 150Ω
1.37
1.25
V
-1.3
+1.7
V
OUTPUT CHARACTERISTICS
VOL
VOH
ISC
Output Swing Low
Output Swing High
Short Circuit Current
RL = 500Ω
1.5
1.6
V
RL = 150Ω
1.4
1.5
V
RL = 10Ω
60
75
mA
75
80
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from ±5.4V to ±6.6V
IS ON
Supply Current Enable (Per Amplifier)
No load
5.7
7
mA
IS OFF
Supply Current Disable (Per Amplifier)
(EL1516A)
I+ (DIS)
2
5
µA
TC IS
IS Temperature Coefficient
VS
Operating Range
I- (DIS)
-19
-16
µA
32
µA/°C
5
12
V
DYNAMIC PERFORMANCE
SR
Slew Rate
VO = ±1.25V square wave, measured 25%75%
TC SR
SR Temperature Coefficient
tS
Settling to 0.1% (AV = +2)
BW1
BW2
110
V/µs
0.5
V/µs/°C
AV = +2, VO = ±1V
25
ns
-3dB Bandwidth
AV = -1, RF = 100Ω
320
MHz
-3dB Bandwidth
AV = +2, RF = 100Ω
200
MHz
3
80
FN7328.0
May 4, 2005
EL1516, EL1516A
Electrical Specifications
PARAMETER
VS+ = +2.5V, VS- = -2.5V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless
otherwise specified. (Continued)
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
HD2
2nd Harmonic Distortion
f = 1MHz, VO = 2VP-P, RL = 100Ω
90
dBc
HD3
3rd Harmonic Distortion
f = 1MHz, VO = 2VP-P, RL = 100Ω
95
dBc
ENABLE (EL1516AIY ONLY)
tEN
Enable Time
125
ns
tDIS
Disable Time
336
ns
IIHEN
EN Pin Input High Current
EN = VS+
18
µA
IILEN
EN Pin Input Low Current
EN = VS-
10
nA
VIHEN
EN Pin Input High Voltage for Powerdown
VS+ -1
V
VIHEN
EN Pin Input Low Voltage for Power-up
VS- +3
V
Electrical Specifications
PARAMETER
VS+ = +6V, VS- = -6V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless
otherwise specified.
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
0.1
3
mV
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
TCVOS
Average Offset Voltage Drift
IB
Input Bias Current
IOS
VCM = 0V
-0.3
VCM = 0V
µV/°C
6.5
9
µA
Input Offset Current
50
500
nA
RIN
Input Impedance
12
MΩ
CIN
Input Capacitance
1.6
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -4.7V to 5.4V
90
110
dB
AVOL
Open-Loop Gain
VO = ±2.5V
75
80
dB
en
Voltage Noise
f = 100kHz
1.24
nV/√Hz
in
Current Noise
f = 100kHz
1.5
pA/√Hz
RL = 500Ω
-4.8
-4.7
V
RL = 150Ω
-4.6
-4.5
V
-4.5
+5.5
V
OUTPUT CHARACTERISTICS
VOL
VOH
ISC
Output Swing Low
Output Swing High
Short Circuit Current
RL = 500Ω
4.8
4.9
V
RL = 150Ω
4.5
4.7
V
RL = 10Ω
110
160
mA
75
85
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from ±5.4V to ±6.6V
IS ON
Supply Current Enable (Per Amplifier)
No load
5.8
7
mA
IS OFF
Supply Current Disable (Per Amplifier)
(EL1516A)
I+ (DIS)
2
5
µA
TC IS
IS Temperature Coefficient
VS
Operating Range
4
I- (DIS)
-19
5
-16
µA
32
µA/°C
12
V
FN7328.0
May 4, 2005
EL1516, EL1516A
Electrical Specifications
PARAMETER
VS+ = +6V, VS- = -6V, RL = 500Ω and CL = 3pF to 0V, RF = RG = 620Ω, VCM = 0V, and TA = 25°C, unless
otherwise specified. (Continued)
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
VO = ±2.5V square wave, measured 25%-75%
90
128
V/µs
0.5
V/µs/°C
DYNAMIC PERFORMANCE
SR
Slew Rate
TC SR
SR Temperature Coefficient
tS
Settling to 0.1% (AV = +2)
AV = +2, VO = ±1V
20
ns
BW1
-3dB Bandwidth
AV = -1, RF = 100Ω
350
MHz
BW2
-3dB Bandwidth
AV = +2, RF = 100Ω
250
MHz
HD2
2nd Harmonic Distortion
f = 1MHz, VO = 2VP-P, RL = 500Ω
125
dBc
f = 1MHz, VO = 2VP-P, RL = 150Ω
117
dBc
f = 1MHz, VO = 2VP-P, RL = 500Ω
115
dBc
f = 1MHz, VO = 2VP-P, RL = 150Ω
110
dBc
HD3
3rd Harmonic Distortion
ENABLE (EL1516AIY ONLY)
tEN
Enable Time
125
ns
tDIS
Disable Time
336
ns
IIHEN
EN Pin Input High Current
EN = VS+
17
20
µA
IILEN
EN Pin Input Low Current
EN = VS-
7
20
nA
VIHEN
EN Pin Input High Voltage for Powerdown
VS+ -1
V
VIHEN
EN Pin Input Low Voltage for Power-up
VS- +3
V
Typical Performance Curves
4
VS=±6V
AV=+2
2 RL=500Ω
0
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
4
RF=100Ω
RF=348Ω
-2
RF=1kΩ
RF=619Ω
-4
-6
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 1. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS RF
5
VS=±6V
RF=348Ω
2 RL=500Ω
0
-2
AV=10
AV=5
AV=2
-4
-6
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 2. NON-INVERTING FREQUENCY RESPONSE (GAIN)
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
(Continued)
4
VS=±6V
AV=+2
2 RL=500Ω
RF=619Ω
CL=22pF
CL=12pF
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
4
CL=4.7pF
0
-2
CL=1pF
CL=0pF
-4
-6
1M
10M
100M
VS=±6V
AV=+2
2 RF=619Ω
0
4
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
VS=±6V
AV=+2
2 RL=500Ω
RF=348Ω
VIN=100mVPP
VIN=20mVPP
0
VIN=500mVPP
VIN=1VPP
VIN=2VPP
10M
100M
VS=±6V
AV=-1
2 RL=500Ω
RF=420Ω
-2
RF=620Ω
-4
RF=1kΩ
-6
1M
1G
10M
100M
1G
FREQUENCY (Hz)
FIGURE 5. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS INPUT SIGNAL LEVELS
FIGURE 6. INVERTING FREQUENCY RESPONSE FOR
VARIOUS RF
4
4
VS=±6V
RF=420Ω
2 RL=500Ω
0
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
RF=100Ω
0
FREQUENCY (Hz)
AV=-1
AV=-2
-2
1G
FIGURE 4. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS RL
4
-6
1M
100M
10M
FREQUENCY (Hz)
FIGURE 3. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS CL
-4
RL=50Ω
-4
FREQUENCY (Hz)
-2
RL=100Ω
-2
-6
1M
1G
RL=500Ω
AV=-10
-4
AV=-5
-6
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 7. INVERTING FREQUENCY RESPONSE (GAIN)
6
VS=±6V
AV=-1
2 RL=500Ω
RF=420Ω
CL=18pF
CL=12pF
0
-2
CL=2pF
-4
-6
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 8. INVERTING FREQUENCY RESPONSE FOR
VARIOUS CL
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
(Continued)
5
VS=±6V
AV=-1
2 RL=500Ω
RF=420Ω
VIN=280mVPP
0
-2
-4
VIN=20mVPP
VIN=1.4VPP
VIN=2.8VPP
-6
1M
10M
100M
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
4
VS=±2.5V
AV=-1
3 RL=500Ω
1
-1
RF=619Ω
RF=1kΩ
-3
-5
100K
1G
1M
FREQUENCY (Hz)
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
1G
5
VS=±2.5V
RF=422Ω
3 RL=500Ω
AV=-2
1
-1
AV=-1
AV=-5
-3
AV=-10
1M
10M
100M
VS=±2.5V
AV=-1
3 RF=420Ω
1
RL=50Ω
-3
-5
100K
1G
RL=500Ω
-1
RL=100Ω
1M
10M
100M
1G
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 11. INVERTING FREQUENCY RESPONSE FOR
VARIOUS AV
FIGURE 12. INVERTING FREQUENCY RESPONSE FOR
VARIOUS RL
5
5
VS=±2.5V
AV=-1
3 RF=420Ω
RL=500Ω
CL=18pF
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
100M
FIGURE 10. INVERTING FREQUENCY RESPONSE FOR
VARIOUS RF
5
CL=15pF
1
CL=12pF
-1
CL=10pF
CL=0pF
-3
-5
100K
10M
FREQUENCY (Hz)
FIGURE 9. INVERTING FREQUENCY RESPONSE FOR
VARIOUS SIGNAL LEVELS
-5
100K
RF=100Ω
RF=422Ω
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 13. INVERTING FREQUENCY RESPONSE FOR
VARIOUS CL
7
VS=±2.55V
AV=-1
3 RF=420Ω
RL=500Ω
VIN=280mVP-P
1
VIN=20mVP-P
-1
-3
-5
100K
VIN=1.4VP-P
VIN=2.24VP-P
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 14. INVERTING FREQUENCY RESPONSE FOR
VARIOUS INPUT SIGNAL LEVELS
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
(Continued)
5
VS=±2.5V
AV=+2
3 RL=500Ω
1
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
5
RF=348Ω
-1
RF=100Ω
RF=619Ω
RL=1kΩ
-3
-5
100K
1M
10M
100M
VS=±2.5V
RF=348Ω
3 RL=500Ω
1
AV=+2
-1
AV=+5
-3
AV=+10
-5
100K
1G
1M
FREQUENCY (Hz)
FIGURE 15. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS RF
1
CL=10pF
CL=27pF
-1
NORMALIZED GAIN (dB)
NORMALIZED GAIN (dB)
CL=18pF
CL=3.3pF
CL=0pF
-3
1M
10M
100M
VS=±2.5V
AV=+2
3 RL=619Ω
1
RF=100Ω
-1
RF=500Ω
-3
RL=50Ω
-5
100K
1G
1M
FIGURE 17. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS CL
VIN=20mVP-P
VIN=100mVP-P
VIN=200mVP-P
VIN=500mVP-P
10M
100M
1G
FREQUENCY (Hz)
FIGURE 19. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS INPUT SIGNAL LEVELS
8
-50
-60
-70
2ND HD
-80
3RD HD
-90
VIN=1VP-P
1M
1G
VS=±6V
RF=RG=619Ω
RL=100Ω
-40
DISTORTION (dB)
NORMALIZED GAIN (dB)
-30
VS=±2.55V
RF=348Ω
3 RL=500Ω
-5
100K
100M
FIGURE 18. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS RL
5
1
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
-3
1G
5
VS=±2.5V
AV=+2
3 RF=619Ω
RL=500Ω
-1
100M
FIGURE 16. NON-INVERTING FREQUENCY RESPONSE FOR
VARIOUS AV
5
-5
100K
10M
FREQUENCY (Hz)
-100
0
2
4
6
8
10
OUTPUT SWING (VPP)
FIGURE 20. 1MHz 2ND AND 3RD HARMONIC DISTORTION vs
OUTPUT SWING
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
(Continued)
-20
VO=2VPP
-75 VS=±6V
RF=RG=620Ω
RL=500Ω
-80
HARMONIC DISTORTION (dBc)
THD + NOISE (dBc)
-70
-85
-90
-95
-100
-105
10K
100K
VS=±2.5V
-30 AV=+2
RF=RG=619Ω
-40 RL=100Ω
VOUT=2VP-P
-50
-60
-70
THD
-80
2ND HD
-90
3RD HD
-100
500K
200K
FREQUENCY (Hz)
FIGURE 21. THD + NOISE vs FREQUENCY
-40
10
THD (dBc)
SUPPLY CURRENT (mA)
12
THD-FIN=10MHz
-60
-70
-80
VS=±2.5V
AV=+2
RF=RG=619Ω
RL=500Ω
THD-FIN=1MHz
-90
-100
0.2
0.7
1.2
1.7
20M
2.7
2.2
8
6
4
2
0
3.2
0
1
OUTPUT VOLTAGE (VP-P)
2
3
5
4
6
SUPPLY VOLTAGE (±V)
FIGURE 23. THD vs OUTPUT VOLTAGE
FIGURE 24. SUPPLY CURRENT vs SUPPLY VOLTAGE
-10
250
VS=±6V
AV=+2
-30 RF=620Ω
RL=500Ω
AV=+2
200
150
GAIN (dB)
3dB BANDWIDTH (MHz)
10M
FIGURE 22. HARMONIC DISTORTION vs FREQUENCY
-30
-50
1M
FUNDAMENTAL FREQUENCY (Hz)
AV=-1
100
AV=-2
AV=+5
50
AV=-5
AV=-10
2
3
4
5
6
SUPPLY VOLTAGE (±V)
FIGURE 25. 3dB BANDWIDTH vs SUPPLY VOLTAGE
9
BaaaA
-70
AaaaB
-90
AV=+10
0
-50
-110
100K
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 26. CHANNEL-TO-CHANNEL ISOLATION vs
FREQUENCY
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
-30
(Continued)
-10
VS=±6V
RL=1kΩ
VS=±6V
AV=+1
-30 RL=500Ω
PSRR (dB)
CMRR (dB)
-50
-70
-90
-110
-50
PSRR+
-70
PSRR-
-90
-130
100K
1M
10M
100M
-110
100K
1G
1M
FIGURE 27. CMRR
1G
10K
100K
VOLTAGE NOISE (nV/√Hz)
12
10
1
-0.1
0.01
10K
100K
1M
10M
100M
10
8
6
4
2
0
10
100
1K
FREQUENCY (Hz)
FREQUENCY (Hz)
FIGURE 29. CLOSED LOOP OUTPUT IMPEDANCE vs
FREQUENCY
FIGURE 30. VOLTAGE NOISE
0.07
DIFF GAIN (%), DIFF PHASE (°)
100M
FIGURE 28. PSRR
100
OUTPUT IMPEDANCE (Ω)
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
VS=±6V
0.06 AV=2
RF=620Ω
VS=±6V
RL=500Ω
RF=620Ω
DIFF GAIN
0.05
0.04
DIFF PHASE
0.5V/DIV
0.03
0.02
0.01
0
1
2
3
4
100ns/DIV
NUMBER OF 150Ω LOADS
FIGURE 31. DIFFERENTIAL GAIN/PHASE
10
FIGURE 32. LARGE SIGNAL STEP RESPONSE
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
(Continued)
VS=±2.5V
RL=500Ω
RF=620Ω
0.5V/DIV
VS=±6V
RL=500Ω
RF=620Ω
20mV/DIV
100ns/DIV
100ns/DIV
FIGURE 33. LARGE SIGNAL STEP RESPONSE
FIGURE 34. SMALL SIGNAL STEP RESPONSE
10
VS=±2.5V
RL=500Ω
RF=620Ω
9
IS (mA)
8
20mV/DIV
7
6
5
4
3
2
-40 -20
100ns/DIV
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (°C)
FIGURE 35. SMALL SIGNAL STEP RESPONSE
FIGURE 36. SUPPLY CURRENT vs TEMPERATURE
200
450
SLEW RATE (±V/µs)
-3dB BANDWIDTH (MHz)
500
400
350
300
120
80
40
250
200
-40 -20
AV=+2V
VO=2VPP
160 RF=200Ω
RL=500Ω
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (°C)
FIGURE 37. -3dB BANDWIDTH vs TEMPERATURE
11
0
-40 -20
0
20
40
60
80 100 120 140 150
DIE TEMPERATURE (°C)
FIGURE 38. SLEW RATE vs TEMPERATURE
FN7328.0
May 4, 2005
EL1516, EL1516A
Typical Performance Curves
0
VS=±6V
50mVOPP
-50
26
-100
22
VOS (µV)
SETTLING TIME (ns)
30
(Continued)
18
-150
-200
-250
-300
14
-350
10
-40 -20
0
20
40
60
-400
-40 -20
80 100 120 140 150
0
DIE TEMPERATURE (°C)
FIGURE 39. 0.1% SETTLING TIME vs TEMPERATURE
1.2
POWER DISSIPATION (W)
IBIAS (µA)
7
6
5
0
20
40
60
80 100 120 140 150
60
80 100 120 140 150
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1
781mW
0.8
SO8
θJA=160°C/W
607mW
0.6
MSOP8/10
θJA=206°C/W
0.4
0.2
0
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
DIE TEMPERATURE (°C)
FIGURE 41. IBIAS CURRENT vs TEMPERATURE
1.8
40
FIGURE 40. VOS vs TEMPERATURE
8
4
-40 -20
20
DIE TEMPERATURE (°C)
FIGURE 42. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
POWER DISSIPATION (W)
1.6
1.4
1.2 1.136W
SO8
θJA=110°C/W
1 1.087W
0.8
MSOP8/10
θJA=115°C/W
0.6
0.4
0.2
0
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
FIGURE 43. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
12
FN7328.0
May 4, 2005
EL1516, EL1516A
Pin Descriptions
EL1516
(8-PIN SO &
8-PIN MSOP)
EL1516A
(10-PIN MSOP)
PIN NAME
PIN FUNCTION
1
9
VOUTA
Output
EQUIVALENT CIRCUIT
VS+
VOUT
CIRCUIT 1
2
10
VINA-
Input
VS+
VIN+
VIN-
VSCIRCUIT 2
3
1
VINA+
Input
Reference Circuit 2
4
3
VS-
Supply
5
5
VINB+
Input
6
6
VINB-
Input
Reference Circuit 2
7
7
VOUTB
Output
Reference Circuit 1
8
8
VS+
Supply
2, 4
ENA, ENB
Enable
VS+
EN
570K
VSCIRCUIT 3
13
FN7328.0
May 4, 2005
EL1516, EL1516A
Applications Information
EL1516 to remain in the safe operating area. These
parameters are related as follows:
Product Description
The EL1516 is a dual voltage feedback operational amplifier
designed especially for DMT ADSL and other applications
requiring very low voltage and current noise. It also features
low distortion while drawing moderately low supply current.
The EL1516 uses a classical voltage-feedback topology
which allows it to be used in a variety of applications where
current-feedback amplifiers are not appropriate because of
restrictions placed upon the feedback element used with the
amplifier. The conventional topology of the EL1516 allows,
for example, a capacitor to be placed in the feedback path,
making it an excellent choice for applications such as active
filters, sample-and-holds, or integrators.
The low noise EL1516 amplifier is specifically designed for
the dual differential receiver amplifier function with ADSL
transceiver hybrids as well as other low-noise amplifier
applications. A typical ADSL CPE line interface circuit is
shown in Figure 44. The EL1516 is used in receiving DMT
down stream signal. With careful transceiver hybrid design
and the EL1516 1.4nV/√Hz voltage noise and 1.5pA/√Hz
current noise performance, -140dBm/Hz system background
noise performance can be easily achieved.
+
-
ROUT
LINE +
RF
RG
ZLINE
RF
ROUT
+
RF
RECEIVE
OUT +
RECEIVE
OUT -
RECEIVE
AMPLIFIERS
+
+
RF
where:
• PDMAXTOTAL is the sum of the maximum power
dissipation of each amplifier in the package (PDMAX)
• PDMAX for each amplifier can be calculated as follows:
V OUTMAX
PDMAX = 2 × V S × I SMAX + ( V S – V OUTMAX ) × ---------------------------R
L
where:
• TMAX = Maximum ambient temperature
ADSL CPE Applications
DRIVER
INPUT
T JMAX = T MAX + ( θ JA × PD MAXTOTAL )
LINE -
• θJA = Thermal resistance of the package
• PDMAX = Maximum power dissipation of 1 amplifier
• VS = Supply voltage
• IMAX = Maximum supply current of 1 amplifier
• VOUTMAX = Maximum output voltage swing of the
application
• RL = Load resistance
To serve as a guide for the user, we can calculate maximum
allowable supply voltages for the example of the video cabledriver below since we know that TJMAX = 150°C, TMAX =
75°C, ISMAX = 7.7mA, and the package θJAs are shown in
Table 1. If we assume (for this example) that we are driving a
back-terminated video cable, then the maximum average
value (over duty-cycle) of VOUTMAX is 1.4V, and RL = 150Ω,
giving the results seen in Table 1.
TABLE 1.
R
RIN
θJA
EL1516IS
SO8
110°C/W
0.406W @
85°C
EL1516IY
MSOP8
115°C/W
0.400W @
85°C
EL1516AIY
MSOP10
115°C/W
0.400W @
85°C
R
RIN
FIGURE 44. TYPICAL LINE INTERFACE CONNECTION
MAX PDISS
@ TMAX
PACKAGE
PART
MAX VS
Power Dissipation
With the wide power supply range and large output drive
capability of the EL1516, it is possible to exceed the 150°C
maximum junction temperatures under certain load and
power supply conditions. It is therefore important to calculate
the maximum junction temperature (TJMAX) for all
applications to determine if power supply voltages, load
conditions, or package type need to be modified for the
14
Single-Supply Operation
The EL1516 has been designed to have a wide input and
output voltage range. This design also makes the EL1516 an
excellent choice for single-supply operation. Using a single
positive supply, the lower input voltage range is within 1.2V
of ground (RL = 500Ω), and the lower output voltage range is
within 875mV of ground. Upper input voltage range reaches
3.6V, and output voltage range reaches 3.8V with a 5V
supply and RL = 500Ω. This results in a 2.625V output swing
on a single 5V supply. This wide output voltage range also
FN7328.0
May 4, 2005
EL1516, EL1516A
allows single-supply operation with a supply voltage as high
as 12V.
output drive capability makes the EL1516 an ideal choice for
RF, IF and video applications.
Gain-Bandwidth Product and the -3dB Bandwidth
Printed-Circuit Layout
The EL1516 has a gain-bandwidth product of 300MHz while
using only 6mA of supply current per amplifier. For gains
greater than 2, their closed-loop -3dB bandwidth is
approximately equal to the gain-bandwidth product divided
by the noise gain of the circuit. For gains less than 2, higherorder poles in the amplifiers' transfer function contribute to
even higher closed loop bandwidths. For example, the
EL1516 has a -3dB bandwidth of 350MHz at a gain of +2,
dropping to 80MHz at a gain of +5. It is important to note that
the EL1516 has been designed so that this “extra” bandwidth
in low-gain applications does not come at the expense of
stability. As seen in the typical performance curves, the
EL1516 in a gain of +2 only exhibits 0.5dB of peaking with a
1000Ω load.
The EL1516 is well behaved, and easy to apply in most
applications. However, a few simple techniques will help
assure rapid, high quality results. As with any high-frequency
device, good PCB layout is necessary for optimum
performance. Ground-plane construction is highly
recommended, as is good power supply bypassing. A 0.1µF
ceramic capacitor is recommended for bypassing both
supplies. Lead lengths should be as short as possible, and
bypass capacitors should be as close to the device pins as
possible. For good AC performance, parasitic capacitances
should be kept to a minimum at both inputs and at the
output. Resistor values should be kept under 5kΩ because
of the RC time constants associated with the parasitic
capacitance. Metal-film and carbon resistors are both
acceptable, use of wire-wound resistors is not recommended
because of their parasitic inductance. Similarly, capacitors
should be low-inductance for best performance.
Output Drive Capability
The EL1516 has been designed to drive low impedance
loads. It can easily drive 6VPP into a 100Ω load. This high
MSOP Package Outline Drawing
15
FN7328.0
May 4, 2005
EL1516, EL1516A
SO Package Outline Drawing
NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at
http://www.intersil.com/design/packages/index.asp
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
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.
For information regarding Intersil Corporation and its products, see www.intersil.com
16
FN7328.0
May 4, 2005
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