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LT1122ACN8#PBF

P1-P3P4-P6P7-P9P10-P12P13-P14
LT1122
1
1122fb
For more information www.linear.com/LT1122
TYPICAL APPLICATION
FEATURES DESCRIPTION
Fast Settling, JFET Input
Operational Amplifier
The LT
®
1122 JFET input operational amplifier combines
high speed and precision performance.
A unique poly-gate JFET process minimizes gate series
resistance and gate-to-drain capacitance, facilitating wide
bandwidth performance, without degrading JFET transis
-
tor matching.
It
slews at 80V/µs and settles in 340ns. The LT1122 is
internally compensated to be unity-gain stable, yet it has
a bandwidth of 14MHz at a supply current of only 7mA. Its
speed makes the LT1122 an ideal choice for fast settling
12-bit data conversion and acquisition systems.
The LT1122 offset voltage of 120µV, and voltage gain of
500,000 also support the 12-bit accurate applications.
The input bias current of 10pA and offset current of 4pA
combined with its speed allow the LT1122 to be used in
such applications as high speed sample and hold ampli
-
fiers, peak detectors, and integrators.
12-Bit Voltage Output D/A Converter Large-Scale Response
APPLICATIONS
n
100% Tested Settling Time 340ns Typ
to 1mV at Sum Node, 10V Step 540ns Max
Tested with Fixed Feedback Capacitor
n
Slew Rate 60V/µs Min
n
Gain-Bandwidth Product 14MHz
n
Power Bandwidth (20V
P-P
) 1.2 MHz
n
Unity-Gain Stable; Phase Margin 60°
n
Input Offset Voltage 600µV Max
n
Input Bias Current 25°C 75pA Max
70°C 600pA Max
■
Input Offset Current 25°C 40pA Max
70°C 150pA Max
■
Low Distortion
n
Fast 12-Bit D/A Output Amplifiers
n
High Speed Buffers
n
Fast Sample-and-Hold Amplifiers
n
High Speed Integrators
n
Voltage to Frequency Converters
n
Active Filters
n
Log Amplifiers
n
Peak Detectors
L, LT, LT C , LT M, Linear Technology and the Linear logo are registered trademarks and C-Load
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
0mA TO 2mA
OR 4mA
2
3
6
C
F
V
0V TO 10V
OUT
12-BIT CURRENT OUTPUT D/A CONVERTER
C
F
= 5pF TO 17pF
(DEPENDING ON D/A CONVERTER USED)
+
–
LT1122
LT1122•TA01
+
200ns/DIV
A
V
= –1
1122 TA07
5V/DIV
LT1122
2
1122fb
For more information www.linear.com/LT1122
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ...................................................... ± 20V
Differential Input Voltage ....................................... ± 40V
Input Voltage .......................................................... ± 20V
Output Short Circuit Duration .......................... Indefinite
Lead Temperature (Soldering, 10 sec.) ..................300°C
(Note 1)
ORDER INFORMATION
Operating Temperature Range
LT1122AM/BM/CM/DM (OBSOLETE) .. –55°C to 125°C
LT1122AC/BC/CC/DC/CS/DS ................. –40°C to 85°C
Storage Temperature Range
All Devices .......................................... –65°C to 150°C
1
2
3
4
8
7
6
5
TOP VIEW
–IN
+IN
V
–
V
+
OUT
V
OS
TRIM
N8 PACKAGE
8-LEAD PDIP
V
OS
TRIM
SPEED BOOST/
OVERCOMP
T
JMAX
= 150°C, θ
JA
= 130°C/W
OBSOLETE PACKAGE
J8 PACKAGE 8-LEAD HERMETIC DIP
T
JMAX
= 175°C, θ
JA
= 100°C/W
1
2
3
4
8
7
6
5
TOP VIEW
V
+
OUT
V
OS
TRIM
–IN
+IN
V
–
S8 PACKAGE
8-LEAD PLASTIC SO
SPEED BOOST/
OVERCOMP
V
OS
TRIM
T
JMAX
= 150°C, θ
JA
= 190°C/W
PIN CONFIGURATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1122ACN8#PBF LT1122ACN8#TRPBF LT1122ACN8 8-Lead Plastic DIP –40°C to 85°C
LT1122BCN8#PBF LT1122BCN8#TRPBF LT1122BCN8 8-Lead Plastic DIP –40°C to 85°C
LT1122CCN8#PBF LT1122CCN8#TRPBF LT1122CCN8 8-Lead Plastic DIP –40°C to 85°C
LT1122DCN8#PBF LT1122DCN8#TRPBF LT1122DCN8 8-Lead Plastic DIP –40°C to 85°C
LT1122CS8#PBF LT1122CS8#TRPBF 1122C 8-Lead Plastic SO –40°C to 85°C
LT1122DS8#PBF LT1122DS8#TRPBF 1122D 8-Lead Plastic SO –40°C to 85°C
OBSOLETE PACKAGE
LT1122AMJ8#PBF LT1122AMJ8#TRPBF LT1122AMJ8 8-Lead Hermetic DIP –55°C to 125°C
LT1122BMJ8#PBF LT1122BMJ8#TRPBF LT1122BMJ8 8-Lead Hermetic DIP –55°C to 125°C
LT1122CMJ8#PBF LT1122CMJ8#TRPBF LT1122CMJ8 8-Lead Hermetic DIP –55°C to 125°C
LT1122DMJ8#PBF LT1122DMJ8#TRPBF LT1122DMJ8 8-Lead Hermetic DIP –55°C to 125°C
LT1122ACJ8#PBF LT1122ACJ8#TRPBF LT1122ACJ8 8-Lead Hermetic DIP –40°C to 85°C
LT1122BCJ8#PBF LT1122BCJ8#TRPBF LT1122BCJ8 8-Lead Hermetic DIP –40°C to 85°C
LT1122CCJ8#PBF LT1122CCJ8#TRPBF LT1122CCJ8 8-Lead Hermetic DIP –40°C to 85°C
LT1122DCJ8#PBF LT1122DCJ8#TRPBF LT1122DCJ8 8-Lead Hermetic DIP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating
temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part markings, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LT1122
3
1122fb
For more information www.linear.com/LT1122
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= ±15V, V
CM
= 0V unless otherwise noted. (Note 2)
SYMBOL PARAMETER CONDITIONS
LT1122AM/BM
LT1122AC/BC
LT
1122CM/DM
LT1122CC/DC
LT1122CS/DS
UNITSMIN TY
P MAX MIN TYP MAX
V
OS
Input Offset Voltage 120 600 130 900 µV
I
OS
Input Offset Current 4 40 5 50 pA
I
B
Input Bias Current 10 75 12 100 pA
Input Resistance
Differential
Common Mode
V
CM
= –10V to 8V
V
CM
= 8V to 11V
10
12
10
12
10
11
10
12
10
12
10
11
Ω
Ω
Ω
Input
Capacitance 4 4 pF
SR
Slew Rate A
V
= – 1 60 80 50 75 V/µs
Settling Time (Note 2) 10V to 0V, – 10V to 0V
100% Tested: A- and C-Grades to 1mV at Sum Node
B- and D-Grades to 1mV at Sum Node
All Grades to 0.5mV at Sum Node
340
350
450
540
350
360
470
590
ns
ns
ns
GBW Gain
-Bandwidth Product Power
Bandwidth
V
OUT
= 20V
P-P
14
1.2
13
1.1
MHz
MHz
A
VOL
Large-Signal Voltage Gain V
OUT
= ±10V, R
L
= 2kΩ
V
OUT
= ±10V, R
L
= 600Ω
180
130
500
250
150
110
450
220
V/mV
V/mV
CMRR Common-Mode Rejection Ratio V
CM
= ±10V 83 99 80 98 dB
Input Voltage Range (Note 4) ±10.5 ±11 ±10.5 ±11 V
PSRR Power Supply Rejection Ratio V
S
= ±10V to ±18V 86 103 82 101 dB
Input Noise Voltage 0.1Hz to 10Hz 3.0 3.3 µV
P-P
Input Noise Voltage Density f
O
= 100Hz
f
O
= 10kHz
25
14
27
15
nV/√Hz
nV/√Hz
Input Noise Current Density f
O
= 100Hz, f
O
= 10kHz 2 2 fA/√Hz
V
OUT
Output Voltage Swing R
L
= 2kΩ
R
L
= 600Ω
±12
±11.5
±12.5
±12
±12
±11.5
±12.5
±12
V
V
I
S
Supply Current 7.5 10 7.8 11 mA
Minimum Supply Voltage (Note 5) ±5 ±5 V
Offset Adjustment Range R
POT
≥ 10k, Wiper to V
+
±4 ±10 ±4 ±10 mV
P1-P3P4-P6P7-P9P10-P12P13-P14

LT1122ACN8#PBF

Mfr. #:
Buy LT1122ACN8#PBF
Manufacturer:
Analog Devices Inc.
Description:
Operational Amplifiers - Op Amps Fast Settling, JFET In Op Amp
Lifecycle:
New from this manufacturer.
Delivery:
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