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LTC1340CS8 数据表(PDF) 3 Page - Linear Technology

部件名 LTC1340CS8
功能描述  Low Noise, Voltage-Boosted Varactor Driver
PDF  8 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC1340CS8 数据表(HTML) 3 Page - Linear Technology

  LTC1340CS8 Datasheet HTML 1Page - Linear Technology LTC1340CS8 Datasheet HTML 2Page - Linear Technology LTC1340CS8 Datasheet HTML 3Page - Linear Technology LTC1340CS8 Datasheet HTML 4Page - Linear Technology LTC1340CS8 Datasheet HTML 5Page - Linear Technology LTC1340CS8 Datasheet HTML 6Page - Linear Technology LTC1340CS8 Datasheet HTML 7Page - Linear Technology LTC1340CS8 Datasheet HTML 8Page - Linear Technology  
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LTC1340
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tSTART
Charge Pump Start-Up Time
CCP = 0.1µF, VCC = 2.7V, IOUT = 0
q
1.2
5
ms
VRIPPLE
Charge Pump Output Ripple at CP
CCP = CVCC = 0.1µF, VCC = 2.7V, IOUT = 0 (Note 2)
200
µVP-P
fCP
Charge Pump Frequency
(Note 3)
q
2.5
4
MHz
The q denotes specifications which apply over the specified temperature
range.
Note 1: C grade device specifications are guaranteed over the 0
°C to 70°C
temperature range. In addition, C grade device specifications are assured
over the – 40
°C to 85°C temperature range by design or correlation, but
are not production tested.
TA = 25°C, unless otherwise noted. (Note 1)
9.4
9.3
9.2
9.1
9.0
8.9
4.9
4.8
4.7
4.6
4.5
4.4
1340 G04
TEMPERATURE (
°C)
–50
0
–25
25
50
75
100
125
COUT = 1nF
VIN = VSHDN = VCC
IOH = 0, VCC = 5V
IOH = 0, VCC = 2.7V
IOH = 14µA, VCC = 5V
IOH = 14µA, VCC = 2.7V
Output High Voltage vs
Temperature
0.5
0.4
0.3
0.2
0.1
0
1340 G05
TEMPERATURE (
°C)
–50
0
–25
25
50
75
100
125
VCC = 2.7V OR 5V
COUT = 1nF
VIN = 0V
VSHDN = VCC
IOL = 14µA
IOL = 0
SUPPLY VOLTAGE (V)
2.5
3.5
3.0
4.5
4.0
5.5
6.0
5.0
6.5
1340 G06
2100
2050
2000
1950
1900
1850
1800
TA = 25°C
VOUT = 1/2AVCC
VSHDN = VCC
DC Transfer Curve
INPUT VOLTAGE (V)
0
12
11
10
9
8
7
6
5
4
3
2
1
0
1
23
4
1340 G01
56
VCC = 2.7V
VCC = 5V
TA = 25°C
COUT = 1nF
IOUT = 0
VSHDN = VCC
VCC = 6V
TEMPERATURE (
°C)
–50
0
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
1340 G03
–25
25
50
75
100
125
VCC = 2.7V TO 6V
COUT = 1nF
VSHDN = VCC
FREQUENCY (kHz)
1
20
10
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
180
144
108
72
36
0
–36
–72
–108
–144
–180
–216
10
100
1000
1340 G02
VCC = 2.7V
TA = 25°C
COUT = 1nF
PHASE
GAIN
Gain and Phase Shift vs
Frequency
TYPICAL PERFORMANCE CHARACTERISTICS
Input Offset Voltage vs
Temperature
Output Low Voltage vs
Temperature
Transconductance vs
Supply Voltage
Note 2: The charge pump output ripple is not tested but is correlated with
a PCB ground plane and high quality, low ESR, low ESL metalized
polyester 0.1
µF capacitors.
Note 3: The internal oscillator typically runs at 2MHz, but the charge pump
refreshes the output on both phases of the clock, resulting in an effective
4MHz operating frequency.



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