®
ISL55191, ISL55291
Data Sheet
March 30, 2007
FN6263.1
Single and Dual Ultra-Low Noise, Ultra-Low
Distortion, Rail-to-Rail, Low Power Op Amp
The ISL55191 and ISL55291 are single and dual high speed
operational amplifiers featuring low noise, low distortion, and
rail-to-rail output drive capability. They are designed to
operate with single and dual supplies from +5VDC
(±2.5VDC) down to +3VDC (±1.5VDC). These amplifiers
draw 6.1mA of quiescent supply current per amplifier. For
power conservation, this family offers a low-power shutdown
mode that reduces supply current to 21µA and places the
amplifiers' output into a high impedance state. The ISL55191
ENABLE logic places the device in the shutdown mode with
EN = 0 and the ISL55291 is placed in the shutdown mode
with EN = 1.
These amplifiers have excellent input and output overload
recovery times and outputs that swing rail-to-rail. Their input
common mode voltage range includes ground. The
ISL55191 and ISL55291 are stable at gains as low as 10
with an input referred noise voltage of 1.3nV/
√
Hz and
harmonic distortion products -94dBc (2nd) and -104dBc
(3rd) below a 1MHz 2V
P-P
signal.
The ISL55191 is available in space-saving 8 Ld DFN and 8 Ld
SOIC packages. The ISL55291 is available in a 10 Ld MSOP
package.
Features
• 1.3nV/√Hz input voltage noise, f
O
= 1kHz
• Harmonic Distortion -94dBc, -104dBc, f
O
= 1MHz
• Stable at gains as low as 10
• 800MHz gain bandwidth product (A
V
= 10)
• 260V/µs slew rate
• 6.1mA supply current (21µA in disable mode)
• 800µV maximum offset voltage
• 12µA input bias current
• 3V to 5.5V single supply voltage range
• Rail-to-rail output
• Pb-free plus anneal available (RoHS compliant)
Applications
• High speed pulse applications
• Low noise signal processing
• ADC buffers
• DAC output amplifiers
• Radio systems
• Portable equipment
Ordering Information
PART
NUMBER
(Note)
ISL55191IBZ
PART
MARKING
55191 IBZ
TAPE
AND
REEL
-
PACKAGE
(Pb-Free)
8 Ld SOIC
PKG.
DWG.
#
TABLE 1. ENABLE LOGIC
ENABLE
ISL55191
EN = 1
EN = 0
DISABLE
EN = 0
EN = 1
MDP0027
ISL55291
ISL55191IBZ-T13 55191 IBZ
ISL55191IRZ
191Z
13”
8 Ld SOIC
MDP0027
(2,500 pcs) Tape and Reel
-
8 Ld DFN
L8.3x3D
ISL55191IRZ-T13 191Z
ISL55291IUZ
5291Z
13”
8 Ld DFN
L8.3x3D
(2,500 pcs) Tape and Reel
-
10 Ld MSOP
MDP0043
ISL55291IUZ-T13 5291Z
13”
10 Ld MSOP MDP0043
(2,500 pcs) Tape and Reel
Coming Soon
Evaluation Board
ISL55191EVAL1Z
Coming Soon
Evaluation Board
ISL55291EVAL1Z
NOTE: Intersil Pb-free plus anneal 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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2006, 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
ISL55191, ISL55291
Pinouts
ISL55191
(8 LD SOIC)
TOP VIEW
FEEDBACK 1
IN- 2
IN+ 3
V- 4
-
+
8 EN
7 V+
6 OUT
5 NC
EN
FEEDBACK
IN-
IN+
1
2
3
4
-
+
ISL55191
(8 LD DFN)
TOP VIEW
8
7
6
5
V+
OUT
NC
V-
ISL55291
(10 LD MSOP)
TOP VIEW
OUT_A 1
IN-_A 2
IN+_A 3
V- 4
EN_A 5
-
+
-
+
10 V+
9 OUT_B
8 IN-_B
7 IN+_B
6 EN_B
2
FN6263.1
March 30, 2007
ISL55191, ISL55291
Absolute Maximum Ratings
(T
A
= +25°C)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5V
Supply Turn On Voltage Slew Rate . . . . . . . . . . . . . . . . . . . . . 1V/μs
Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V
ESD tolerance, Human Body Model . . . . . . . . . . . . . . . . . . . . . .3kV
ESD tolerance, Machine Model . . . . . . . . . . . . . . . . . . . . . . . . .300V
ESD Rating
Human Body Model (Per MIL-STD-883 Method 3015.7) . . . . .3kV
Machine Model (Per EIAJ ED-4701 Method C-111) . . . . . . . .300V
Thermal Information
Thermal Resistance
θ
JA
(°C/W)
8 Ld DFN Package . . . . . . . . . . . . . . . . . . . . . . . . .
TBD
8 Ld SO Package . . . . . . . . . . . . . . . . . . . . . . . . . .
110
8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . .
115
Ambient Operating Temperature Range . . . . . . . . . .-40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . +125°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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: T
J
= T
C
= T
A
Electrical Specifications
PARAMETER
DC SPECIFICATIONS
V
OS
ΔV
OS
---------------
-
ΔT
I
OS
I
B
V
CM
CMRR
PSRR
A
VOL
V
OUT
V
+
= 5V, V- = GND, R
L
= 1kΩ, R
G
= 30Ω, R
F
= 270Ω. unless otherwise specified. Parameters are per amplifier.
All values are at V+ = 5V, T
A
= +25°C.
CONDITIONS
MIN
TYP
MAX
UNIT
DESCRIPTION
Input Offset Voltage
Input Offset Drift vs Temperature
Input Offset Current
Input Bias Current
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Power Supply Rejection Ratio
Large Signal Voltage Gain
Maximum Output Voltage Swing
V
CM
= 0V to 3.8V
V+ = 3V to 5V
V
O
= 0.5V to 4V, R
L
= 1kΩ
Output low, R
L
= 1kΩ connected to V+/2
Output high, R
L
= 1kΩ connected to V+/2
4.96
0
85
70
85
-40°C to +85°C
170
2.2
0.3
-12
800
µV
µV/°C
0.7
-19
3.8
µA
µA
V
dB
dB
dB
100
77
97
23
4.98
6.1
12
21
9
18
40
40
mV
V
mA
mA
µA
mA
mA
I
S,ON
Supply Current, Enabled
ISL55191
ISL55291
I
S,OFF
I
O
+
I
O
-
V
SUPPLY
V
INH
V
INL
I
ENH
Supply Current, Disabled
Short-Circuit Output Current
Short-Circuit Output Current
Supply Operating Range
ENABLE High Level
ENABLE Low Level
ENABLE Input High Current
V
EN
= V+
ENABLE Input Low Current
V
EN
= V-
ISL55191 (EN)
ISL55291 (EN)
ISL55191 (EN)
ISL55291 (EN)
R
L
= 10Ω connected to V+/2
R
L
= 10Ω connected to V+/2
V+ to V-
110
110
3
2
132
132
5
V
V
0.8
20
0.8
5
20
80
1.5
6.2
80
V
nA
µA
µA
nA
I
ENL
3
FN6263.1
March 30, 2007
ISL55191, ISL55291
Electrical Specifications
PARAMETER
AC SPECIFICATIONS
GBW
HD
(4MHz)
ISO
X-TALK
ISL55291
V
N
IN
Gain Bandwidth Product
2nd Harmonic Distortion
3rd Harmonic Distortion
Off-state Isolation; EN = 1 ISL55291; f
O
= 10MHz; A
V
= +10; V
IN
= 640mV
P-P
;
EN = 0 ISL55191
R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
Channel to Channel Crosstalk
Input Referred Voltage Noise
Input Referred Current Noise
f
O
= 10MHz; A
V
= +10; V
OUT
(Driven Channel) =
640mV
P-P
; R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
f
O
= 1kHz
f
O
= 10kHz
A
V
= +10; V
OUT
= 100mV
P-P
; R
f
/R
g
= 909Ω/100Ω
A
V
= +10; V
OUT
= 2V
P-P
; R
f
/R
g
= 909Ω/100Ω
800
-94
-104
-65
-75
1.2
3.8
MHz
dBc
dBc
dB
dB
nV/√Hz
pA/√Hz
V
+
= 5V, V- = GND, R
L
= 1kΩ, R
G
= 30Ω, R
F
= 270Ω. unless otherwise specified. Parameters are per amplifier.
All values are at V+ = 5V, T
A
= +25°C.
CONDITIONS
MIN
TYP
MAX
UNIT
DESCRIPTION
TRANSIENT RESPONSE
SR
t
r
, t
f
Large
Signal
Slew Rate
Rise Time, t
r
10% to 90%
Fall Time, t
f
10% to 90%
Rise Time, t
r
10% to 90%
Fall Time, t
f
10% to 90%
t
r
, t
f
, Small
Signal
t
pd
t
IOL
Rise Time, t
r
10% to 90%
Fall Time, t
f
10% to 90%
Propagation Delay
10% V
IN
to 10% V
OUT
Positive Input Overload Recovery
Time, t
IOL+
; 10% V
IN
to 10% V
OUT
Negative Input Overload Recovery
Time, t
IOL-
; 10% V
IN
to 10% V
OUT
t
OOL
A
V
= +10; V
OUT
= 3.5V
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
OUT
= 1V
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
OUT
= 100mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
OUT
= 100mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
V
S
= ±2.5V; A
V
= +10; V
IN
= +V
CM
+0.5V;
R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
V
S
= ±2.5V; A
V
= +10; V
IN
= -V -0.5V;
R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
150
260
6.6
5.7
5
4
3
3
1.6
50
30
40
30
540
390
330
50
V/uS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Positive Output Overload Recovery V
S
= ±2.5V; A
V
= +10; V
IN
= 2.3V
P-P
;
Time, t
OOL+
; 10% V
IN
to 10% V
OUT
R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
Negative Output Overload Recovery V
S
= ±2.5V; A
V
= +10; V
IN
= 2.3V
P-P
;
Time, t
OOL-
; 10% V
IN
to 10% V
OUT
R
f
/R
g
= 909Ω/100Ω; C
L
= 1.2pF
t
EN
ISL55191
ENABLE to Output Turn-on Delay
Time; 10% EN to 10% V
OUT
ENABLE to Output Turn-off Delay
Time; 10% EN to 10% V
OUT
A
V
= +10; V
IN
= 500mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
IN
= 500mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
IN
= 500mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
A
V
= +10; V
IN
= 500mV
P-P
; R
f
/R
g
= 909Ω/100Ω
C
L
= 1.2pF
t
EN
ISL55291
ENABLE to Output Turn-on Delay
Time; 10% EN to 10% V
OUT
ENABLE to Output Turn-off Delay
Time;10% EN to 10% V
OUT
4
FN6263.1
March 30, 2007
ISL55191, ISL55291
Typical Performance Curves
1
0
NORMALIZED GAIN (dB)
R
f
= 249, R
g
= 27.4
R
f
= 274, R
g
= 30.1
R
f
= 316, R
g
= 34.8
NORMALIZED GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
-8
A
V
= 10
R
L
= 1k
V
OUT
= 100mV
P-P
0.1
R
f
= 365, R
g
= 40.2
R
f
= 2.74k, R
g
= 301
R
f
= 909, R
g
= 100
100
1k
R
f
= 133, R
g
= 14.7
1
0
-1
-2
-3
-4
-5 A
V
= 10
R
L
= 1k
-6 C
L
= 1.3pF
R = 909
-7 R
f
= 100
g
-8
0.1
1.0
V
OUT
= 200mV
V
OUT
= 100mV
V
OUT
= 1V
-9
.01
1.0
10
FREQUENCY (MHz)
10
FREQUENCY (MHz)
100
1k
FIGURE 1. GAIN vs FREQUENCY FOR VARIOUS R
f
vs R
g
FIGURE 2. GAIN vs FREQUENCY vs V
OUT
1
0
NORMALIZED GAIN (dB)
-1
-2
R
L
= 1k
R
L
= 500
R
L
= 250
A
V
= 10
C
L
= 1.3pF
V
OUT
= 100mV
P-P
.01
0.1
1.0
R
L
= 100
GAIN (dB)
100
1k
-3
-4
-5
-6
-7
-8
-9
10
65
A
V
= 1000 R
f
/R
i
= 100k/100
60
55
50
45
A
V
= 10 R
f
/R
i
= 909/100
40
35
30 A
V
= 100 R
f
/R
i
= 10k/100
25
20
15
R
L
= 1k
10
C
L
= 2.2pF
5 V
OUT
= 100mV
P-P
0
0.1
1.0
10
100
1k
FREQUENCY (MHz)
FREQUENCY (MHz)
FIGURE 3. GAIN vs FREQUENCY FOR VARIOUS R
LOAD
FIGURE 4. CLOSED LOOP GAIN vs FREQUENCY
2
1
NORMALIZED GAIN (dB)
0
-1
-2
-3
-4
-5
C
g
= 0.5pF
R
f
= 909
-6
R = 100
g
-7
R
L
= 1k
V
OUT
= 100mV
P-P
-8
.01
0.1
1.0
V
S
= 2.5V
V
S
= 1.2V
NORMALIZED GAIN (dB)
4
3
2
1
0
-1
-2
-3
A
V
= 10
-4 V
+
= 5V
R
L
= 1k
-5 V
OUT
= 100mV
P-P
-6
0.1
0.1
C
L
= 1.2pF
C
L
= 2.2pF
C
L
= 4.5pF
C
L
= 23.2pF
C
L
= 13.2pF
C
L
= 8.0pF
10
100
1k
FREQUENCY (MHz)
10
100
FREQUENCY (MHz)
1k
FIGURE 5. GAIN vs FREQUENCY vs V
S
FIGURE 6. GAIN vs FREQUENCY FOR VARIOUS C
LOAD
5
FN6263.1
March 30, 2007
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