LTC6652AHMS8-1.25-PBF LINER [Linear Technology], LTC6652AHMS8-1.25-PBF Datasheet

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LTC6652AHMS8-1.25-PBF

Manufacturer Part Number
LTC6652AHMS8-1.25-PBF
Description
Precision Low Drift Low Noise Buffered Reference
Manufacturer
LINER [Linear Technology]
Datasheet
Features
applications
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typical application
2.8V ≤ V
Low Drift: A Grade 5ppm/°C Max
High Accuracy: A Grade ±0.05%, B Grade ±0.1%
Low Noise: 2.1ppm
100% Tested at –40°C, 25°C and 125°C
Sinks and Sources Current: ±5mA
Low Power Shutdown: <2µA Maximum
Thermal Hysteresis: 105ppm for –40°C to 125°C
Range
Low Dropout: 300mV
No External Load Capacitor Required
Wide Supply Range to 13.2V
Available Output Voltage Options: 1.25V, 2.048V,
2.5V, 3V, 3.3V, 4.096V, 5V
8-Lead MSOP and 5mm × 5mm Surface Mount
Hermetic Packages
Automotive Control and Monitoring
High Temperature Industrial
High Resolution Data Acquisition Systems
Instrumentation and Process Control
Precision Regulators
Medical Equipment
IN
(OPTIONAL)
≤ 13.2V
0.1µF
B Grade 10ppm/°C Max
C
IN
Basic Connection
P-P
V
SHDN
IN
(0.1Hz to 10Hz)
LTC6652-2.5 V
GND
OUT
6652 TA01a
C
1µF
(OPTIONAL)
OUT
V
2.5V
OUT
Description
The LTC
references is fully specified over the temperature range
of –40°C to 125°C. High order curvature compensation
allows these references to achieve a low drift of less than
5ppm/°C with a predictable temperature characteristic
and an output voltage accuracy of ±0.05%. The perfor-
mance over temperature should appeal to automotive,
high-performance industrial and other high temperature
applications.
The LTC6652 voltage references can be powered from a
13.2V supply or as little as 300mV above the output voltage
or 2.7V; whichever is higher. The LTC6652 references are
offered in an 8-Lead MSOP package and an 8-lead LS8
package. They boast low noise, excellent load regulation,
source and sink capability and exceptional line rejection,
making them a superior choice for demanding precision
applications. A shutdown mode allows power consump-
tion to be reduced when the reference is not needed.
The optional output capacitor can be left off when space
constraints are critical.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Noise Buffered Reference
Precision Low Drift Low
®
–0.025
–0.050
6652 family of precision, low drift, low noise
0.050
0.025
0
–40
Output Voltage Temperature Drift
–20
0
TEMPERATURE (°C)
20
40
60
80 100
LTC6652
6652 TA01b
125
6652fd
1

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LTC6652AHMS8-1.25-PBF Summary of contents

Page 1

Features Low Drift: A Grade 5ppm/°C Max n B Grade 10ppm/°C Max High Accuracy: A Grade ±0.05%, B Grade ±0.1% n Low Noise: 2.1ppm (0.1Hz to 10Hz) n P-P 100% Tested at –40°C, 25°C and 125°C n Sinks and Sources ...

Page 2

... LTC6652BHMS8-2.048#TRPBF LTC6652AHMS8-2.5#PBF LTC6652AHMS8-2.5#TRPBF LTC6652BHMS8-2.5#PBF LTC6652BHMS8-2.5#TRPBF LTC6652AHMS8-3#PBF LTC6652AHMS8-3#TRPBF LTC6652BHMS8-3#PBF LTC6652BHMS8-3#TRPBF LTC6652AHMS8-3.3#PBF LTC6652AHMS8-3.3#TRPBF LTC6652BHMS8-3.3#PBF LTC6652BHMS8-3.3#TRPBF LTC6652AHMS8-4.096#PBF LTC6652AHMS8-4.096#TRPBF LTC6652BHMS8-4.096#PBF LTC6652BHMS8-4.096#TRPBF LTC6652AHMS8-5#PBF LTC6652AHMS8-5#TRPBF LTC6652BHMS8-5#PBF LTC6652BHMS8-5#TRPBF 2 Operating Temperature Range ................ – ...

Page 3

... LTC6652 SPECIFIED TEMPERATURE RANGE –40°C to 125°C –40°C to 125°C PART NUMBER** LTC6652AHMS8-1.25 LTC6652BHMS8-1.25 LTC6652AHMS8-2.048 LTC6652BHMS8-2.048 LTC6652AHMS8-2.5 LTC6652BHMS8-2.5 LTC6652AHLS8-2.5 LTC6652BHLS8-2.5 LTC6652AHMS8-3 LTC6652BHMS8-3 LTC6652AHMS8-3.3 LTC6652BHMS8-3.3 LTC6652AHMS8-4.096 LTC6652BHMS8-4.096 LTC6652AHMS8-5 LTC6652BHMS8-5 MIN TYP MAX –0.05 0.05 –0.1 0 ...

Page 4

LTC6652 electrical characteristics temperature range, otherwise specifications are at T PARAMETER CONDITIONS Minimum Operating Voltage (Note 5) I SOURCE LTC6652-1.25, LTC6652-2.048 LTC6652-2.5, LTC6652-3, LTC6652-3.3, LTC6652-4.096, LTC6652-5 Output Short-Circuit Current Short V Short V Shutdown Pin (SHDN) Logic High Input Voltage ...

Page 5

LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. 1.25V ...

Page 6

LTC6652 typical perForMance characteristics LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. ...

Page 7

LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. 2.5V ...

Page 8

LTC6652 typical perForMance characteristics LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. ...

Page 9

LTC6652s. Curves from the LTC6652-1.25, LTC6652-2.5 and the LTC6652-5 represent the extremes and typical of the voltage options. Characteristic curves for other output voltages fall between these curves and can be estimated based on their output. Power ...

Page 10

LTC6652 block DiagraM SHDN 3 GND 4 applications inForMation Bypass and Load Capacitors The LTC6652 voltage references do not require an input capacitor, but a 0.1µF capacitor located close to the part improves power supply rejection. The ...

Page 11

OUT 500mV/DIV C = 0µF 500µs/DIV OUT Figure 2. Transient Response Without Output Capacitor 3. OUT 500mV/DIV C = 1µF 500µs/DIV OUT Figure 3. Transient Response with 1µF Output ...

Page 12

LTC6652 applications inForMation V IN 2V/DIV V OUT 1V/DIV C = 0µF 100µs/DIV OUT Figure 8. Start-Up Response without Output Capacitor V IN 2V/DIV V OUT 1V/DIV C = 1µF 100µs/DIV OUT Figure 9. Start-Up Response with 1µF Output Capacitor ...

Page 13

LTC6652-2.5 MS8 PACKAGE 3 TYPICAL PARTS T = 35° –20 –40 0 300 600 900 HOURS Figure 12a. MS8 Long-Term Drift 35 125°C TO 25°C –40°C TO 25° ...

Page 14

LTC6652 applications inForMation PC Board Layout The mechanical stress of soldering a surface mount volt- age reference board can cause the output voltage to shift and temperature coefficient to change. These two changes are not correlated. For ...

Page 15

OUTPUT VOLTAGE SHIFT DUE TO IR REFLOW (%) Figure 15a. MS8 Output Voltage Shift Due to IR Reflow 0.7 0.6 0.5 0.4 0.3 0.2 0 ...

Page 16

LTC6652 typical applications Extended Supply Range Reference 4V TO 30V R1 V LTC6652-2 SHDN BZX84C18 GND C1 6652 TA02 0.1µF Negative Rail Circuit V ≥ 1.75V 0.1µF 6 LTC6652-2 500 ...

Page 17

Description Please refer to http://www.linear.com/designtools/packaging/ 0.889 ± 0.127 (.035 ± .005) 5.23 3.20 – 3.45 (.206) (.126 – .136) MIN 0.42 ± 0.038 0.65 (.0165 ± .0015) (.0256) TYP BSC RECOMMENDED SOLDER PAD LAYOUT NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) ...

Page 18

LTC6652 package Description Please refer to http://www.linear.com/designtools/packaging/ 8 2.50 ±0. 0.70 ±0.05 5.00 SQ ±0.15 5.80 SQ ±0.15 APPLY SOLDER MASK TO AREAS THAT ARE NOT SOLDERED 5.00 SQ ±0.15 4.20 SQ ±0.10 8 PIN 1 ...

Page 19

Rev C) REV DATE DESCRIPTION C 11/09 Change to Typical Performance Characteristics. Change to Typical Application. D 6/12 Addition of 5mm × 5mm Hermetic LS8 Package. Update to Electrical Characteristics to Include LS8 Package. ...

Page 20

LTC6652 typical application Improved Reference Supply Rejection in a Data Converter Application R1 50k SHDN C1 0.1µF C2 10µF relateD parts PART NUMBER DESCRIPTION LT1460 Micropower Series References LT1461 Micropower Series Low Dropout LT1790 Micropower Precision Series References LT6650 Micropower ...

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