Datasheet

5
LT1634
1634fb
4.096V ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Temperature Coefficient (Note 8) LT1634A, I
R
= 20µA ● 4 10 ppm/°C
LT1634B/LT1634C, I
R
= 20µA ● 10 25 ppm/°C
Reverse Dynamic Impedance (Note 5) 20µA ≤ I
R
≤ 2mA 0.15 0.75 Ω
● 0.20 1.50 Ω
Low Frequency Noise (Note 6) I
R
= 20µA, 0.1Hz ≤ f ≤ 10Hz 30 µV
P-P
Hysteresis (Note 7) ∆T = –40°C to 85°C 160 ppm
∆T = 0°C to 70°C 40 ppm
5V ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Breakdown Voltage LT1634ACS8/LT1634BCS8/ 4.99750 5.000 5.00250 V
LT1634AIS8/LT1634BIS8 (I
R
= 20µA) –0.05 0.05 %
LT1634CCZ (I
R
= 20µA) 4.99000 5.000 5.01000 V
–0.20 0.20 %
LT1634ACS8 (I
R
= 20µA) ● 4.99400 5.000 5.00600 V
–0.12 0.12 %
LT1634AIS8 (I
R
= 20µA) ● 4.99125 5.000 5.00875 V
–0.175 0.175 %
LT1634BCS8 (I
R
= 20µA) ● 4.98875 5.000 5.01125 V
–0.225 0.225 %
LT1634BIS8 (I
R
= 20µA) ● 498188 5.000 5.01813 V
–0.362 0.362 %
LT1634CCZ (I
R
= 20µA) ● 4.98126 5.000 5.01876 V
–0.375 0.375 %
Reverse Breakdown Change 20µA ≤ I
R
≤ 2mA 0.3 1.5 mV
with Current (Note 4) ● 0.4 3.0 mV
2mA ≤ I
R
≤ 20mA 6 15 mV
● 620 mV
Minimum Operating Current ● 15 µA
Temperature Coefficient (Note 8) LT1634A, I
R
= 20µA ● 4 10 ppm/°C
LT1634B/LT1634C, I
R
= 20µA ● 10 25 ppm/°C
Reverse Dynamic Impedance (Note 5) 20µA ≤ I
R
≤ 2mA 0.15 0.75 Ω
● 0.20 1.50 Ω
Low Frequency Noise (Note 6) I
R
= 20µA, 0.1Hz ≤ f ≤ 10Hz 35 µV
P-P
Hysteresis (Note 7) ∆T = –40°C to 85°C 160 ppm
∆T = 0°C to 70°C 40 ppm
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: If the part is stored outside of the specific operating temperature
range, the output may shift due to hysteresis.
Note 3: ESD (Electrostatic Discharge) sensitive device. Use proper ESD
handling precautions.
Note 4: Output requires 0.1µF for operating current greater than 1mA.
Note 5: This parameter is guaranteed by “reverse breakdown change with
current” test.
Note 6: Peak-to-peak noise is measured with a single highpass filter at
0.1Hz and 2-pole lowpass filter at 10Hz.
Note 7: Hysteresis in output voltage is created by package stress that
differs depending on whether the IC was previously at a higher or lower
temperature. Output voltage is always measured at 25°C but the IC is
cycled to 85°C or –40°C before successive measurements. Hysteresis is
roughly proportional to the square of the temperature change. Hysteresis
is not normally a problem for operational temperature excursions where
the instrument might be stored at high or low temperature.
Note 8: Temperature coefficient is calculated from the minimum and
maximum output voltage measured at T
MIN
, Room and T
MAX
as follows:
TC = (V
OMAX
– V
OMIN
)/(T
MAX
– T
MIN
)
Incremental slope is also measured at 25°C.
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)