LT1678 LINER [Linear Technology], LT1678 Datasheet - Page 7

• Manufacturer Part Number: LT1678
• Description: Dual/Quad Low Noise, Rail-to-Rail, Precision Op Amps
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: The inputs are protected by back-to-back diodes. Current limiting
resistors are not used in order to achieve low noise. If differential input
voltage exceeds ±1.4V, the input current should be limited to 25mA. If the
common mode range exceeds either rail, the input current should be
limited to 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum.
Note 4: The LT1678C/LT1679C and LT1678I/LT1679I are guaranteed
functional over the Operating Temperature Range of – 40°C to 85°C.
Note 5: The LT1678C/LT1679C are guaranteed to meet specified
performance from 0°C to 70°C. The LT1678C/LT1679C are designed,
characterized and expected to meet specified performance from – 40°C to
85°C but is not tested or QA sampled at these temperatures. The LT1678I/
LT1679I are guaranteed to meet specified performance from – 40°C to
85°C.
Note 6: Typical parameters are defined as the 60% yield of parameter
distributions of individual amplifier; i.e., out of 100 LT1678/LT1679s,
typically 60 op amps will be better than the indicated specification.
Note 7: See the test circuit and frequency response curve for 0.1Hz to10Hz
tester in the Applications Information section.
100
10
1
0.1
Voltage Noise vs Frequency
V
T
S
A
= 25°C
= ±15V
1
FREQUENCY (Hz)
10
V
CM
V
100
CM
W
= 14.5V
= 0V
16789 G01
U
1000
0
0.1Hz to 10Hz Voltage Noise
V
S
= 5V, 0V
2
4
TIME (sec)
Note 8: Noise is 100% tested at ±15V supplies.
Note 9: Slew rate is measured in A
measured at ±5V.
Note 10: This parameter is not 100% tested.
Note 11: V
V
Note 12: V
V
Note 13: Guaranteed by correlation to slew rate at V
V
Note 14: ∆CMRR and ∆PSRR are defined as follows:
Note 15: Matching parameters are the difference between amplifiers A and
B on the LT1678 and between amplifiers A and D and B and C in the
LT1679.
Note 16: Input range guaranteed by the common mode rejection ratio test.
S
S
S
1. CMRR and PSRR are measured in µV/V on the individual amplifiers.
2. The difference is calculated between the matching sides in µV/V.
3. The result is converted to dB.
= ±15V tests.
= ±15V tests.
= 3V and V
6
S
S
8
= 5V limits are guaranteed by correlation to V
= 3V limits are guaranteed by correlation to V
S
16789 G02
= ±15V tests.
10
0
0.01Hz to 1Hz Voltage Noise
V
V
LT1678/LT1679
= – 1; input signal is ±10V, output
S
= 5V, 0V
20
40
TIME (sec)
S
= ±15V and GBW at
60
S
S
= 3V and
= 5V and
sn16789 16789fs
80
16789 G03
7
100