LTC6991 Linear Technology, LTC6991 Datasheet - Page 3

• Manufacturer Part Number: LTC6991
• Description: Resettable Low Frequency Oscillator
• Manufacturer: Linear Technology

DataSheet.in
elecTrical characTerisTics
temperature range, otherwise specifications are at T
(N
SYMBOL
t
f
∆f
∆f
BW
t
Analog Inputs
V
∆V
R
V
∆V
Power Supply
V
I
OUT
OUT
S
S
SET
SET
DIV
+
OUT
OUT
DIV
SET
DIV
/∆T
/∆V
/∆T
= 1 to 2
+
21
PARAMETER
Output Clock Period
Output Frequency
Frequency Accuracy (Note 4)
Frequency Drift Over Temperature
Frequency Drift Over Supply
Period Jitter (Note 10)
Frequency Modulation Bandwidth
Frequency Change Settling Time (Note 9)
Voltage at SET Pin
V
Frequency-Setting Resistor
DIV Pin Voltage
DIV Pin Valid Code Range (Note 5)
DIV Pin Input Current
Operating Supply Voltage Range
Power-On Reset Voltage
Supply Current
), R
SET
Drift Over Temperature
SET
= 50k to 800k, R
LOAD
= 5k, C
LOAD
A
CONDITIONS
29.1µHz ≤ f
V
V
N
N
Deviation from Ideal
V
R
R
R
= 25°C. Test conditions are V
+
+
DIV
DIV
DIV
L
L
L
= 5pF unless otherwise noted.
= 4.5V to 5.5V
= 2.25V to 4.5V
= ∞, R
= ∞, R
= ∞, R
/V
= 1
= 8
+
The
= (DIVCODE + 0.5)/16
SET
SET
SET
OUT
l
= 50k
= 100k
= 800k
denotes the specifications which apply over the full operating
≤ 977Hz
V
V
V
V
V
V
+
+
+
+
+
+
= 5.5V
= 2.25V
= 5.5V
= 2.25V
= 5.5V
= 2.25V
+
= 2.25V to 5.5V, RST = 0V, DIVCODE = 0 to 15
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
1.024m
29.1µ
0.97
2.25
MIN
50
0
0.4 • f
±0.005
±0.8
0.23
0.06
1.00
TYP
±75
135
105
100
15
80
65
55
7
1
OUT
LTC6991
34,360
MAX
±1.5
±2.2
0.55
0.16
1.03
±1.5
1.95
977
800
±10
170
135
130
105
100
5.5
85
V
+
Seconds
ppm
ppm
UNITS
µV/°C
Cycle
%/°C

6991p
%/V
%/V
RMS
RMS
kΩ
nA
µA
µA
µA
µA
µA
µA
Hz
Hz
%
%
%
V
V
V
V