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LT 1468 CS8
Datasheet
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ANALOG DEVICES LT 1468 CS8 Datasheet

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LT1468
90MHz, 22V/µs
Operational Amplifi er
FEATURES
n
90MHz Gain Bandwidth, f = 100kHz
n
22V/μs Slew Rate
n
Settling Time: 900ns (AV = –1, 150μV, 10V Step)
n
Low Distortion, –96.5dB for 100kHz, 10V
n
Maximum Input Offset Voltage: 75µV
n
Maximum Input Offset Voltage Drift: 2µV/°C
n
Maximum (–) Input Bias Current: 10nA
n
Minimum DC Gain: 1000V/mV
n
Minimum Output Swing into 2k: ±12.8V
n
Unity Gain Stable
n
Input Noise Voltage: 5nV/√Hz
n
Input Noise Current: 0.6pA/√Hz
n
Total Input Noise Optimized for 1k < RS < 20k
n
Specifi ed at ±5V and ±15V
P-P
APPLICATIONS
n
16-Bit DAC Current-to-Voltage Converter
n
Precision Instrumentation
n
ADC Buffer
n
Low Distortion Active Filters
n
High Accuracy Data Acquisition Systems
n
Photodiode Amplifi ers
DESCRIPTION
The LT®1468 is a precision high speed operational amplifi er with 16-bit accuracy and 900ns settling to 150µV for 10V signals. This unique blend of precision and AC performance makes the LT1468 the optimum choice for high accuracy applications such as DAC current-to-voltage conversion and ADC buffers. The initial accuracy and drift character­istics of the input offset voltage and inverting input bias current are tailored for inverting applications.
The 90MHz gain bandwidth ensures high open-loop gain at frequency for reducing distortion. In noninverting ap­plications such as an ADC buffer, the low distortion and DC accuracy allow full 16-bit AC and DC performance.
The 22V/µs slew rate of the LT1468 improves large-signal performance in applications such as active fi lters and instrumentation amplifi ers compared to other precision op amps.
The LT1468 is manufactured on a complementary bipolar process. It is available in a space saving 3mm × 3mm lead­less package, as well as small outline and DIP packages.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
16-Bit DAC I-to-V Converter
20pF
16
DAC
INPUTS
LTC
OFFSET: VOS + IB (6kΩ) < 1LSB SETTLING TIME TO 150µV = 1.7µs SETTLING LIMITED BY 6k AND 20pF TO COMPENSATE DAC OUTPUT CAPACITANCE
®
1597
6k
–
LT1468
2k
+
OPTIONAL NOISE FILTER
V
50pF
1468 TA01
OUT
Total Harmonic Distortion vs Frequency
–80
VS = ±15V
= 2
A
V
= 2k
R
L
–90
–100
–110
–120
TOTAL HARMONIC DISTORTION (dB)
–130
100
= 10V
V
OUT
P-P
1k 10k 100k
FREQUENCY (Hz)
1468 TA02
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LT1468
(
ABSOLUTE MAXIMUM RATINGS
Total Supply Voltage (V+ to V–) .................................36V
Maximum Input Current (Note 2) ...........................10mA
Output Short-Circuit Duration (Note 3) ............ Indefi nite
Operating Temperature Range ................. –40°C to 85°C
PIN CONFIGURATION
TOP VIEW
1NULL
–IN
+IN
V
8-LEAD
EXPOSED PAD IS INTERNALLY CONNECTED TO V
–
2
+
3
–
4
DD PACKAGE
3mm × 3mm) PLASTIC DFN
T
= 150°C, θJA = 43°C/W
JMAX
8
DNC*
+
V
7
OUT
6
NULL
5
–
(Note 1)
Specifi ed Temperature Range (Note 4) .... –40°C to 85°C
Junction Temperature ........................................... 150°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) ..................300°C
TOP VIEW
1
NULL
–IN
+IN
V
N8 PACKAGE 8-LEAD PDIP
T
JMAX
T
JMAX
–
2
+
3
–
4
*DO NOT CONNECT
= 150°C, θJA = 130°C/W (N8) = 150°C, θJA = 190°C/W (S8)
8
DNC*
+
V
7
OUT
6
NULL
5
S8 PACKAGE
8-LEAD PLASTIC SO
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1468CN8#PBF NA LT1468CN8 8-Lead PDIP 0°C to 70°C LT1468IN8#PBF NA LT1468IN8 8-Lead PDIP –40°C to 85°C LT1468CS8#PBF LT1468CS8#TRPBF 1468 8-Lead Plastic Small Outline 0°C to 70°C LT1468IS8#PBF LT1468IS8#TRPBF 1468I 8-Lead Plastic Small Outline –40°C to 85°C LT1468ACDD#PBF LT1468ACDD#TRPBF LDJX 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C LT1468AIDD#PBF LT1468AIDD#TRPBF LDJX 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C LT1468CDD#PBF LT1468CDD#TRPBF LDJX 8-Lead (3mm × 3mm) Plastic DFN 0°C to 70°C LT1468IDD#PBF LT1468IDD#TRPBF LDJX 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C
LEAD BASED FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LT1468CN8 NA LT1468CN8 8-Lead PDIP 0°C to 70°C LT1468IN8 NA LT1468IN8 8-Lead PDIP –40°C to 85°C LT1468CS8 LT1468CS8#TR 1468 8-Lead Plastic Small Outline 0°C to 70°C LT1468IS8 LT1468IS8#TR 1468I 8-Lead Plastic Small Outline –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to:
http://www.linear.com/leadfree/
http://www.linear.com/tapeandreel/
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LT1468
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
SYMBOL PARAMETER CONDITIONS V
V
OS
I
OS
–
I
B
+
I
B
e
n
i
n
R
IN
C
IN
CMRR Common Mode Rejection Ratio V
PSRR Power Supply Rejection Ratio V A
VOL
V
OUT
I
OUT
I
SC
SR Slew Rate A
GBW Gain Bandwidth f = 100kHz, RL = 2k ±15V
THD Total Harmonic Distortion AV = 2, VO = 10V
, t
t
r
f
Input Offset Voltage N8, S8 ±15V
Input Offset Current ±5V to ±15V 13 50 nA Inverting Input Bias Current ±5V to ±15V 3 ±10 nA Noninverting Input Bias Current ±5V to ±15V –10 ±40 nA Input Noise Voltage 0.1Hz to 10Hz ±5V to ±15V 0.3 µV Input Noise Voltage f = 10kHz ±5V to ±15V 5 nV/√Hz Input Noise Voltage f = 10kHz ±5V to ±15V 0.6 pA/√Hz Input Resistance V
Input Capacitance ±15V 4 pF Input Voltage Range + ±15V
Input Voltage Range – ±15V
Large-Signal Voltage Gain V
Output Swing RL = 10k
Output Current V
Short-Circuit Current V
Full-Power Bandwidth 10V Peak, (Note 6)
Rise Time, Fall Time AV = 1, 10% to 90%, 0.1V ±15V
Overshoot AV = 1, 0.1V ±15V
Propagation Delay AV = 1, 50% VIN to 50% V
= 25°C. VCM = 0V unless otherwise noted.
A
SUPPLY
±5V
LT1468A, DD Package ±15V
±5V
LT1468, DD Package ±15V
±5V
= ±12.5V
CM
Differential
±15V ±15V
±5V
±5V
= ±12.5V
CM
V
= ±2.5V
CM
= ±4.5V to ±15V 100 112 dB
S
= ±12.5V, RL = 10k
OUT
V
= ±12.5V, RL = 2k
OUT
V
= ±2.5V, RL = 10k
OUT
V
= ±2.5V, RL = 2k
OUT
±15V
±5V
±15V ±15V
±5V ±5V
±15V
R
= 2k
L
R
= 10k
L
R
= 2k
L
= ±12.5V
OUT
V
= ±2.5V
OUT
= 0V, V
OUT
= –1, RL = 2k (Note 5) ±15V
V
= ±0.2V ±15V ±25 ±40 mA
IN
±15V
±5V ±5V
±15V
±5V
±5V
±15V
3V Peak, (Note 6)
±5V
±5V
AV = 2, VO = 10V
, f = 1kHz
P-P
, f = 100kHz
P-P
±15V ±15V
MIN TYP MAX UNITS
100
50
12.5
2.5
96 96
1000
500
1000
500
±13.0 ±12.8
±3.0 ±2.8
±15 ±15
15 11
30 50
30 50
100 150
240 150
13.5
3.5
–14.3
–4.3
110 112
9000 5000 6000 3000
±13.6 ±13.5
±3.6 ±3.5
±22 ±22
22 17
75
175
75
175 200
300
–12.5
–2.5
350 900
60 55
90 88
0.00007
0.0015 11
±5V
12 30
0.1V
OUT
±5V
,
±15V
±5V
35
9
10
µV µV
µV µV
µV µV
P-P
M
k
V V
V V
dB dB
V/mV V/mV V/mV V/mV
V V V V
mA mA
V/µs V/µs
kHz kHz
MHz MHz
% %
ns ns
% %
ns ns
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LT1468
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
SYMBOL PARAMETER CONDITIONS V
t
s
R
O
I
S
Settling Time 10V Step, 0.01%, AV = –1
Output Resistance AV = 1, f = 100kHz ±15V 0.02  Supply Current ±15V
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. 0°C ≤ TA ≤ 70°C, VCM = 0V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS V
V
OS
I
OS
–
I
B
+
I
B
CMRR Common Mode Rejection Ratio V
PSRR Power Supply Rejection Ratio V A
VOL
V
OUT
I
OUT
I
SC
SR Slew Rate A
GBW Gain Bandwidth f = 100kHz, RL = 2k ±15V
I
S
Input Offset Voltage N8, S8 ±15V
Input V
Drift (Note 7)
OS
Input Offset Current Input Offset Current Drift Inverting Input Bias Current Negative Input Current Drift Noninverting Input Bias Current
Large-Signal Voltage Gain V
Output Swing RL = 10k
Output Current V
Short-Circuit Current V
Supply Current ±15V
= 25°C. VCM = 0V unless otherwise noted.
A
SUPPLY
±15V 10V Step, 150µV, A 5V Step, 0.01%, A
V
= –1
V
= –1
±15V
±5V
±5V
SUPPLY
±5V
LT1468A, DD Package ±15V
±5V
LT1468, DD Package ±15V
±5V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V ±5V to ±15V
= ±12.5V
CM
V
= ±2.5V
CM
= ±4.5V to ±15V
S
= ±12.5V, RL = 10k
OUT
V
= ±12.5V, RL = 2k
OUT
V
= ±2.5V, RL = 10k
OUT
V
= ±2.5V, RL = 2k
OUT
±15V
±5V
±15V ±15V
±5V
±5V
±15V
R
= 2k
L
R
= 10k
L
RL = 2k
= ±12.5V
OUT
V
= ±2.5V
OUT
= 0V, V
OUT
= –1, RL = 2k (Note 5) ±15V
V
= ±0.2V ±15V
IN
±15V
±5V
±5V
±15V
±5V
±5V
±5V
±5V
MIN TYP MAX UNITS
760 900 770
3.9
3.6
5.2
5.0
MIN TYP MAX UNITS
●
●
●
●
●
●
●
●
0.7 2.0 µV/°C
150 250
150 250
300 400
65 nA
60 pA/°C
●
±15 nA
40 pA/°C
●
94
●
94
●
98 dB
●
500
●
250
●
500
●
250
●
±12.9
●
±12.7
●
±2.9
●
±2.7
●
±12.5
●
±12.5
●
±17 mA
●
13
●
9
●
55
●
50
●
●
●
±50 nA
6.5
6.3
ns ns ns
mA mA
µV µV
µV µV
µV µV
dB dB
V/mV V/mV V/mV V/mV
V V V V
mA mA
V/µs V/µs
MHz MHz
mA mA
4
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LT1468
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at T
SYMBOL PARAMETER CONDITIONS V
V
OS
I
OS
–
I
B
+
I
B
CMRR Common Mode Rejection Ratio V
PSRR Power Supply Rejection Ratio V A
VOL
V
OUT
I
OUT
I
SC
SR Slew Rate A
GBW Gain Bandwidth f = 100kHz, R
I
S
Input Offset Voltage N8, S8 ±15V
Input V
Drift (Note 7)
OS
Input Offset Current Input Offset Current Drift Inverting Input Bias Current Negative Input Current Drift Noninverting Input Bias Current
Large-Signal Voltage Gain V
Output Swing RL = 10k
Output Current V
Short-Circuit Current V
Supply Current ±15V
= 25°C. –40°C ≤ TA ≤ 85°C, VCM = 0V unless otherwise noted.
A
SUPPLY
±5V
LT1468A, DD Package ±15V
±5V
LT1468, DD Package ±15V
±5V
±5V to ±15V ±5V to ±15V
MIN TYP MAX UNITS
●
●
●
●
●
●
●
●
±5V to ±15V ±5V to ±15V
●
±5V to ±15V ±5V to ±15V
= ±12.5V
CM
V
= ±2.5V
CM
= ±4.5V to ±15V
S
= ±12V, RL = 10k
OUT
V
= ±10V, RL = 2k
OUT
V
= ±2.5V, RL = 10k
OUT
V
= ±2.5V, RL = 2k
OUT
R
= 2k
L
R
= 10k
L
R
= 2k
L
= ±12.5V
OUT
V
= ±2.5V
OUT
= 0V, V
OUT
= –1, RL = 2k (Note 5) ±15V
V
= ±0.2V ±15V
IN
= 2k ±15V
L
±15V
±5V
±15V ±15V
±5V ±5V
±15V ±15V
±5V ±5V
±15V
±5V
±5V
±5V
±5V
●
92
●
92
●
96 dB
●
300
●
150
●
300
●
150
●
±12.8
●
±12.6
●
±2.8
●
±2.6
●
±7
●
±7
●
±12 mA
●
9
●
6
●
45
●
40
●
●
●
230 330
230 330
400 500
0.7 2.5 µV/°C 80 nA
120 pA/°C
±30 nA
80 pA/°C
±60 nA
7.0
6.8
µV µV
µV µV
µV µV
dB dB
V/mV V/mV V/mV V/mV
V V V V
mA mA
V/µs V/µs
MHz MHz
mA mA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
Note 2: The inputs are protected by back-to-back diodes and two 100 series resistors. If the differential input voltage exceeds 0.7V, the input current should be limited to 10mA. Input voltages outside the supplies will be clamped by ESD protection devices and input currents should also be limited to 10mA.
Note 3: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefi nitely.
Note 4: The LT1468C is guaranteed to meet specifi ed performance from 0°C to 70°C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at –40°C and at 85°C. The LT1468I is guaranteed to meet the extended temperature limits.
Note 5: Slew rate is measured between ±8V on the output with ±12V input for ±15V supplies and ±2V on the output with ±3V input for ±5V supplies.
Note 6: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2πV
P
Note 7: This parameter is not 100% tested.
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