Document
LT1466L/LT1467L Micropower Dual/Quad Precision Rail-to-Rail Input and Output Op Amps
FEATURES
s s s s s s s s
DESCRIPTION
The LT®1466L/LT1467L are dual/quad bipolar op amps that combine rail-to-rail input and output operation with precision specifications. Using a patented technique, both input stages of the LT1466L/LT1467L are trimmed: one at the negative supply and the other at the positive supply. The resulting common mode rejection of 83dB minimum is much better than other rail-to-rail input op amps. A minimum open-loop gain of 400V/mV into a 10k load virtually eliminates all gain error. Operation is specified for 3V, 5V and ± 5V supplies. Unlike other rail-to-rail amplifiers, the input offset voltage of 390µV maximum is guaranteed across the entire rail-torail input range, not just at half supply. The graph below contrasts the VOS specifications of the LT1466L/LT1467L to a competitive part that is specified only at half supply. As can be seen, the LT1466L/LT1467L’s limits are much tighter for inputs near either supply. The LT1466L is available in 8-lead PDIP and SO-8 packages with the standard dual pinout. The LT1467L features the standard quad pinout and is available in a 16-lead narrow SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Rail-to-Rail Input and Output Low Supply Current: 75µA Max 390µV VOS(MAX) for VCM = V – to V + High Common Mode Rejection Ratio: 83dB Min High AVOL: 400V/mV Min Wide Supply Range: 2V to ± 5V Low Input Bias Current: 6nA Typ 120kHz Gain Bandwidth Product
U APPLICATIONS
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Supply Current Sensing Driving A/D Converters Test Equipment Amplifiers
TYPICAL APPLICATION
Variable Current Source
VCC
2000
R2 10k VIN 0V TO 2.5V
R3 5.1Ω
INPUT OFFSET VOLTAGE (µV)
1000
+
1/2 LT1466L VN2222 10k
+
1/2 LT1466L TP0610
0
–
–
R2 IO = VIN R1 = VIN 51Ω
–1000
R1 100k
( )( ) ( )
1 R3
IO
–2000 0
1466L/67L TA01
U
U
Worst-Case VOS vs Input Common Mode Voltage
TYPICAL RAIL-TO-RAIL AMPLIFIER (65dB CMRR)
LT1467L LIMITS
2 3 1 4 INPUT COMMON MODE VOLTAGE (V)
5
1466L/67L TA02
1
LT1466L/LT1467L
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ........................................................ ± 8V Input Current ...................................................... ± 15mA Output Short-Circuit Duration (Note 1) .........Continuous Specified Temperature Range ...................... 0°C to 70°C Junction Temperature ........................................... 150°C Storage Temperature Range ................. – 65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
TOP VIEW OUT A 1 –IN A 2 A +IN A 3 V– 4 N8 PACKAGE 8-LEAD PDIP B 5 8 7 6 V+ OUT B –IN B +IN B
ORDER PART NUMBER LT1466LCN8 LT1466LCS8 S8 PART MARKING 1466L
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 130°C/ W (N) TJMAX = 150°C, θJA = 190°C/ W (S)
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VO = half supply, unless otherwise noted.
SYMBOL VOS ∆VOS PARAMETER Input Offset Voltage Input Offset Voltage Shift Input Offset Voltage Match (Channel-to-Channel) Input Bias Current Input Bias Current Shift Input Offset Current Input Offset Current Shift Input Bias Current Match (Channel-to-Channel) Input Noise Voltage Density Input Noise Current Density Large-Signal Voltage Gain CONDITIONS VCM = V + VCM = V – VCM = V – to V + VCM = V –, V + (Notes 3, 4) VCM = V + VCM = V – VCM = V – to V + VCM = V + VCM = V – VCM = V – to V + VCM = V + (Note 4) VCM = V – (Note 4) f = 1kHz f = 1kHz VS = 5V, VO = 0.5V to 4.4V, RL = 10k VS = 3V, VO = 0.5V to 2.4V, RL = 10k MIN TYP 110 110 75 150 3 –6 9 0.6 0.4 0.9 0.6 0.6 45 0.05 1500 1000 MAX 390 390 345 550 14 28 3.6 3.6 5.1 5.1 5.1 UNITS µV µV µV µV nA nA nA nA nA nA nA nA nV/√Hz pA/ √Hz V/mV V/mV
IB ∆ IB IOS ∆IOS
en in AVOL
2
U
U
W
W W U
W
TOP VIEW OUT A 1 – IN A 2 + IN A 3 V+ 4 B C A D 16 OUT D 15 – IN D 14 + IN D 13 V – 12 + IN C 11 – IN C 10 OUT C 9 NC
ORDER PART NUMBER LT1467LCS
+ IN B 5 – IN B 6 OUT B 7 NC 8
S PACKAGE 16-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 150°C/ W
– 14
400 250
LT1466L/LT1467L
ELECTRICAL CHARACTERISTICS
TA = 25°C, VS = 5V, 0V; VS = 3V, 0V; VCM = VO = half supply, unless otherwise noted.
SYMBOL CMRR PSRR VOL PARAMETER Common Mode Rejection Ratio CMRR Match (Channel-to-Channel) Power Supply Rejection Ratio PSRR Match (Channel-to-Channel) Output Voltage Swing LOW CONDITIONS VCM = V – to V +, VS = 5V VCM = V – to V +, VS = 5V (Note 4) VS = 2.3V to 12V, VCM = VO = 0.5V VS = 2.3V to 12V, VCM = VO = 0.5V (Note 4) No Load ISINK = 0.5mA ISINK = 2.5mA No Load ISOURCE = 0.5mA ISOURCE = 2.5mA MIN 83 80 90 84 TYP 96 93 105 105 32 135 235 + V – 0.026 V+ – 0.135 V+ – 0.265 17 60 MAX UNITS dB dB dB dB mV mV mV V V V mA µA
60 270 470
VOH
Output Voltage Swing HIGH
ISC IS
Short-Circuit Current Supply Current per Amplifier
V+ – 0.052 V+ – 0.270 V+ – 0.570 10
75
0°C ≤ TA ≤ 70°C, VS = 5V, 0V; VS = 3V.