LT1990AIS8 Linear Technology, LT1990AIS8 Datasheet

IC AMP DIFF +/-250V MCRPWR 8SOIC

LT1990AIS8

Manufacturer Part Number
LT1990AIS8
Description
IC AMP DIFF +/-250V MCRPWR 8SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LT1990AIS8

Amplifier Type
Differential
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
0.55 V/µs
-3db Bandwidth
105kHz
Voltage - Input Offset
900µV
Current - Supply
140µA
Current - Output / Channel
22mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 36 V, ±1.35 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Gain Bandwidth Product
-
Current - Input Bias
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1990AIS8
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT1990AIS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Pin Selectable Gain of 1 or 10
High Common Mode Voltage Range:
Common Mode Rejection Ratio: 70dB Min
Input Protection to ±350V
Gain Error: 0.28% Max
PSRR: 82dB Min
High Input Impedance: 2MΩ Differential,
500kΩ Common Mode
Micropower: 120µA Max Supply Current
Wide Supply Range: 2.7V to 36V
–3dB Bandwidth: 100kHz
Rail-to-Rail Output
8-Pin SO Package
Battery Cell Voltage Monitoring
High Voltage Current Sensing
Signal Acquisition in Noisy Environments
Input Protection
Fault Protected Front Ends
Level Sensing
Isolation
85V Window (V
±250V (V
S
= ±15V)
+V
SOURCE
U
V
OUT
S
–12V ≤ V
= 5V, 0V)
= V
I
L
REF
+
± (10 • I
CM
≤ 73V
L
R
• R
S
U
S
)
5V
IN
LT6650
Full-Bridge Load Current Monitor
GND
OUT
FB
54.9k
20k
V
REF
1µF
DESCRIPTIO
The LT
fier with a very high common mode input voltage range. It
has pin selectable gains of 1 or 10. The LT1990 operates
over a ±250V common mode voltage range on a ±15V
supply. The inputs are fault protected from common
mode voltage transients up to ±350V and differential
voltages up to ±500V. The LT1990 is ideally suited for both
high side and low side current or voltage monitoring.
On a single 5V supply, the LT1990 has an adjustable 85V
input range, 70dB min CMRR and draws less than 120µA
supply current. The rail-to-rail output maximizes the dy-
namic range, especially important for single supplies as
low as 2.7V.
The LT1990 is specified for single 3V, 5V and ±15V
supplies over both commercial and industrial temperature
ranges. The LT1990 is available in the 8-pin SO package.
All other trademarks are the property of their respective owners.
= 1.5V
1nF
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
®
7
2
3
4
1990 is a micropower precision difference ampli-
G = 1, 10, Micropower,
LT1990
1M
1M
Difference Amplifier
1
40k
±250V Input Range
40k
U
+
900k
900k
100k
100k
10k
10k
1990 TA01
6
5
8
V
OUT
LT1990
1990fb
1

Related parts for LT1990AIS8

LT1990AIS8 Summary of contents

Page 1

... The LT1990 is specified for single 3V, 5V and ±15V supplies over both commercial and industrial temperature ranges. The LT1990 is available in the 8-pin SO package. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Full-Bridge Load Current Monitor ...

Page 2

... ORDER PART NUMBER LT1990CS8 LT1990IS8 LT1990HS8 LT1990ACS8 LT1990AIS8 LT1990AHS8 Order Options Tape and Reel: Add #TR Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: Consult LTC Marketing for parts specified with wider operating temperature ranges. ...

Page 3

ELECTRICAL CHARACTERISTICS V = 3V, 0V 5V, 0V 10k SYMBOL PARAMETER V Offset Voltage, RTI OS e Input Noise Voltage, RTI n Noise Voltage Density, RTI R Input Resistance IN ...

Page 4

LT1990 3V/5V ELECTRICAL CHARACTERISTICS ● The denotes the specifications which apply over the temperature range half supply 10, unless otherwise noted. (Notes REF SYMBOL PARAMETER V Input Offset ...

Page 5

ELECTRICAL CHARACTERISTICS denotes the specifications which apply over the temperature range of –40°C ≤ T The ● 10k half supply 10, unless otherwise noted. (Notes REF ...

Page 6

LT1990 3V/5V ELECTRICAL CHARACTERISTICS denotes the specifications which apply over the temperature range of –40°C ≤ T The ● half supply 10, unless otherwise noted. (Notes REF SYMBOL PARAMETER V ...

Page 7

ELECTRICAL CHARACTERISTICS = ±15V 10k 0V 10 REF SYMBOL PARAMETER I Output Short-Circuit Current SC BW Bandwidth SR Slew Rate Settling Time to 0.01% AV ...

Page 8

LT1990 ±15V ELECTRICAL CHARACTERISTICS denotes the specifications which apply over the temperature range of –40°C ≤ T The ● 10, unless otherwise noted. (Notes 4, 6) SYMBOL PARAMETER ∆G Gain Error GNL Gain Nonlinearity G/T Gain vs ...

Page 9

ELECTRICAL CHARACTERISTICS denotes the specifications which apply over the temperature range of –40°C ≤ T The ● 10, unless otherwise noted. (Notes 4, 6) SYMBOL PARAMETER V Input Offset Voltage Hysteresis, RTI OSH PSRR Power Supply ...

Page 10

LT1990 W U TYPICAL PERFOR A CE CHARACTERISTICS Supply Current vs Supply Voltage 220 1.25V REF OUT – 200 T = 125°C A 180 T = 85°C A 160 T = 25°C A ...

Page 11

W U TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 100 100 1k FREQUENCY (Hz) –3dB Bandwidth vs Supply Voltage 120 T = 25°C ...

Page 12

LT1990 W U TYPICAL PERFOR A CE CHARACTERISTICS Output Impedance vs Frequency 100 5V 25° 100 1k 10k 100k 200k FREQUENCY (Hz) 1990 ...

Page 13

W U TYPICAL PERFOR A CE CHARACTERISTICS Small Signal Transient Response 1.5V 1990 G28 V = 3V, 0V 50µs/DIV – 10k 1.5V REF W BLOCK DIAGRA ...

Page 14

LT1990 U U APPLICATIO S I FOR ATIO Primary Features The LT1990 is a complete gain-block solution for high input common mode voltage applications, incorporating a low power precision operational amplifier providing rail- to-rail output swing along with on-chip precision ...

Page 15

... Figure 2. PWM-Based ±1A Electromagnet Current Controller Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...

Page 16

... NOTE .004 – .010 (0.101 – 0.254) .150 – .157 .228 – .244 (3.810 – 3.988) (5.791 – 6.197) .050 (1.270) BSC 0406 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2004 NOTE 3 SO8 0303 1990fb ...

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