LTC6102CDD LINER [Linear Technology], LTC6102CDD Datasheet

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LTC6102CDD

Manufacturer Part Number
LTC6102CDD
Description
Precision Zero Drift Current Sense Amplifi er
Manufacturer
LINER [Linear Technology]
Datasheet
1.LTC6102CDD.pdf (20 pages)

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
LTC6102CDD
Manufacturer:
LT
Quantity:
10 000
Company:
Meier Automation Equipment Co., Limited Meier Automation Equipment Co., Limited
Part Number:
LTC6102CDD#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
LTC6102CDD-1
Manufacturer:
LT
Quantity:
10 000
FEATURES
APPLICATIONS
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L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
Supply Range:
±10μV Input Offset Maximum
±50nV/°C Input Offset Drift Maximum
Fast Response: 1μs Step Response
Gain Confi gurable with Two Resistors
Low Input Bias Current: 3nA Maximum
PSRR 130dB Minimum
Output Currents up to 1mA
Operating Temperature Range: –40°C to 125°C
Available in 8-Lead MSOP and 3mm × 3mm
DFN Packages
Current Shunt Measurement
Battery Monitoring
Remote Sensing
Power Management
Load Protection
Motor Control
Automotive Controls
4V to 60V, 70V Absolute Maximum (LTC6102)
5V to 100V, 105V Absolute Maximum (LTC6102HV)
I
LOAD
L
O
A
D
10A Current Sense with 10mA Resolution and 100mW
V
OUT
+IN
V
=
–
R
R
OUT
LTC6102HV
IN
• V
SENSE
+
–
V
Maximum Dissipation
SENSE
= 249.5V
–
1mΩ*
+
SENSE
4.99k
R
–INS
–INF
V
V
OUT
OUT
+
REG
*PROPER SHUNT SELECTION COULD ALLOW
MONITORING OF CURRENTS IN EXCESS OF 1000A
R
20Ω
IN
V
OUT
0.1μF
LTC2433-1
5V TO 105V
6102 TA01
5V
DESCRIPTION
The LTC
high-side current sense amplifi ers. Their high supply
voltage rating allows their use in almost any application,
while the low drift and offset ensure accuracy across a
wide range of operating conditions.
The LTC6102/LTC6102HV monitor current via the voltage
across an external sense resistor (shunt resistor). Internal
circuitry converts input voltage to output current, allowing
a small sense signal on a large common mode voltage to
be translated to a ground-referred signal. Low DC offset
allows the use of very low shunt resistor values and large
gain-setting resistors. As a result, power loss in the shunt
is reduced.
The wide operating supply and high accuracy make the
LTC6102/LTC6102HV ideal for a large array of applications
from automotive to industrial and power management. A
maximum input sense voltage of 2V allows a wide range
of currents and voltages to be monitored. Fast response
makes the LTC6102/LTC6102HV the perfect choice for load
current warnings and shutoff protection control.
The LTC6102/LTC6102HV are available in 8-lead MSOP
and 3mm × 3mm DFN packages.
TO μP
1μF
Current Sense Amplifi er
®
6102/LTC6102HV are versatile, high voltage,
LTC6102/LTC6102HV
Precision Zero Drift
Dynamic Range vs Maximum Power
110
100
90
80
70
60
50
40
30
20
0.001
Dissipation in R
R
Max V
SENSE
MAXIMUM POWER DISSIPATION (W)
SENSE
= 10μΩ
0.01
= 100μV
DYNAMIC RANGE RELATIVE
TO 10μV MINIMUM V
I
SENSE
R
Max V
0.1
SENSE
= 10A
SENSE
SENSE
= 100mΩ
= 1V
1
at 10A
SENSE
6102 TA01b
10
6102fb
1

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LTC6102CDD Summary of contents

Page 1

FEATURES n Supply Range 60V, 70V Absolute Maximum (LTC6102 100V, 105V Absolute Maximum (LTC6102HV) n ±10μV Input Offset Maximum n ±50nV/°C Input Offset Drift Maximum n Fast Response: 1μs Step Response n Gain Confi gurable with ...

Page 2

... LTC6102HMS8#TRPBF LTC6102HVCMS8#PBF LTC6102HVCMS8#TRPBF LTCVB LTC6102HVIMS8#PBF LTC6102HVIMS8#TRPBF LTC6102HVHMS8#PBF LTC6102HVHMS8#TRPBF LTCVB LEAD BASED FINISH TAPE AND REEL LTC6102CDD LTC6102CDD#TR LTC6102IDD LTC6102IDD#TR LTC6102HDD LTC6102HDD#TR 2 Output Current .......................................(+1mA, –10mA) Output Short Circuit Duration........................... Indefi nite Operating Temperature Range: (Note 2) LTC6102C/LTC6102HVC ....................... –40°C to 85°C ...

Page 3

ORDER INFORMATION LEAD BASED FINISH TAPE AND REEL LTC6102HVCDD LTC6102HVCDD#TR LTC6102HVIDD LTC6102HVIDD#TR LTC6102HVHDD LTC6102HVHDD#TR LTC6102CMS8 LTC6102CMS8#TR LTC6102IMS8 LTC6102IMS8#TR LTC6102HMS8 LTC6102HMS8#TR LTC6102HVCMS8 LTC6102HVCMS8#TR LTC6102HVIMS8 LTC6102HVIMS8#TR LTC6102HVHMS8 LTC6102HVHMS8#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature ...

Page 4

LTC6102/LTC6102HV ELECTRICAL CHARACTERISTICS operating temperature range, otherwise specifi cations are – 12V unless otherwise noted. SYMBOL PARAMETER e Input Noise Voltage N I Supply Current S f Sampling Frequency ...

Page 5

ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. In addition to the Absolute ...

Page 6

LTC6102/LTC6102HV TYPICAL PERFORMANCE CHARACTERISTICS LTC6102HV: I Maximum vs OUT Temperature 6.5 6 12V S 5.5 5 100V 4.5 S 4.0 3 3.0 2.5 2 1.5 1.0 0.5 0 ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS Step Response Rising Edge – 100mV SENSE 5. 25° 12V R = 100Ω 4.99k OUT OUT + + SENSE ...

Page 8

LTC6102/LTC6102HV BLOCK DIAGRAM I V LOAD SENSE – SENSE Figure 1. LTC6102/LTC6102HV Block Diagram and Typical Connection APPLICATIONS INFORMATION The LTC6102 high side current sense amplifi er (Figure 1) provides accurate monitoring of current ...

Page 9

APPLICATIONS INFORMATION This is the same value as the input offset. A larger sense resistor will reduce the error due to offset by increasing the sense voltage for a given load current. For this example, choosing a 5mΩ R the ...

Page 10

LTC6102/LTC6102HV APPLICATIONS INFORMATION Selection of External Input Resistor, R The external input resistor controls the transconduc- IN tance of the current sense circuit, I example 100, then OUT 1mA for V ...

Page 11

APPLICATIONS INFORMATION must be chosen such that the max output voltage does not exceed the LTC6102 max output voltage rating. If the following circuit is a buffer or ADC with limited input range, then R must be chosen so that ...

Page 12

LTC6102/LTC6102HV APPLICATIONS INFORMATION Clock Feedthrough, Input Bias Current The LTC6102 uses auto-zeroing circuitry to achieve an almost zero DC offset over temperature, sense voltage, and power supply voltage. The frequency of the clock used for auto-zeroing is typically 10kHz. The ...

Page 13

APPLICATIONS INFORMATION The LTC6102HV can be used at voltages up to 105V. This additional voltage requires that more power be dissipated for a given level of current. This will further limit the allowed output current at high ambient temperatures. It ...

Page 14

LTC6102/LTC6102HV APPLICATIONS INFORMATION V BAT SENSE +IN – + LOAD – V LTC6102 Figure 6. LTC6102 Supply Current Monitored with Load Because the voltage across R SENSE the sense range of the LTC6102 in this circuit, V ...

Page 15

APPLICATIONS INFORMATION R SENSE R1 100 +IN –INS –INF + – L – 0.1μF V REG OUT LTC6102 D1 R2 4.99k Figure 9. Additional Resistor R3 Protects Output During Supply Reversal Response Time The ...

Page 16

LTC6102/LTC6102HV TYPICAL APPLICATIONS Bidirectional Current Sense Circuit with Separate Charge/Discharge Output CHARGER 100 +IN L – LTC6102 DISCHARGING • R OUT D DISCHARGE SENSE CHARGING • R ...

Page 17

TYPICAL APPLICATIONS 16-Bit Resolution Unidirectional Output into LTC2433 ADC I LOAD LOGIC 47k FAULT OFF ON 1μF V SENSE + – 100Ω +IN –INS –INF + – – 0.1μF V ...

Page 18

LTC6102/LTC6102HV TYPICAL APPLICATIONS 48V Supply Current Monitor with Isolated Output and 105V Survivability I SENSE AND M2 ARE FQD3P50 TM R OUT V = OUT SENSE + – 48V ...

Page 19

PACKAGE DESCRIPTION 3.5 ±0.05 1.65 ±0.05 2.15 ±0.05 (2 SIDES) 0.25 ± 0.05 0.50 BSC 2.38 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 0.889 ± 0.127 (.035 ± .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN ...

Page 20

LTC6102/LTC6102HV TYPICAL APPLICATION + V – SENSE +IN LOAD – V LTC6102 RELATED PARTS PART NUMBER DESCRIPTION LT1636 Rail-to-Rail Input/Output, Micropower Op Amp LT1637/LT1638/ Single/Dual/Quad, Rail-to-Rail, Micropower Op Amp V LT1639 LT1787/LT1787HV Precision, Bidirectional, High Side Current ...

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