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DC1698A-B

Description
Amplifier IC Development Tool LT1999-20 (MS8) Demoboard
CategoryEmbedded solution    Engineering tools    Analog and digital IC development tools    Amplifier IC development tools   
File Size132KB,7 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
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DC1698A-B Overview

Amplifier IC Development Tool LT1999-20 (MS8) Demoboard

DC1698A-B Parametric

Parameter NameAttribute value
MakerADI
Product CategoryAmplifier IC Development Tools
Shipping restrictionsMouser does not currently sell this product.
productDemonstration Boards
typeCurrent Sense
Tools for assessmentLT1999IMS8-20
Working power voltage4.5 V to 5.5 V
seriesLT1999
Factory packaging quantity1
DEMO MANUAL DC1698A
LT1999: High Voltage,
Bidirectional Current
Sense Amplifier
DESCRIPTION
Demonstration circuit 1698A features the LT1999, a high
voltage, bi-directional current sense amplifier.
The demo board amplifies the voltage drop across an on
board current sense resistor. The output voltage is a bi-
directional signal that is centered on the V
REF
voltage and
is proportional to the current through the sense resistor.
The output is scaled by one of three fixed gain options. The
gain options are: 10V/V (DC1698A-A), 20V/V (DC1698A-B)
and 50V/V (DC1698A-C). The input voltage range is from
–5V to 80V (independent of the device supply voltage)
allowing the part to be used for high or low side current
sensing. The LT1999 requires a separate 5V supply voltage.
Design files for this circuit board are available at
http://www.linear.com/demo
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.
PERFORMANCE SUMMARY
Table 1. Performance Summary (T
A
= 25°C)
SYMBOL
V
S
V
CM
CMRR
V
OUT
V
OSI
I
Q
V
REF
V
REFIN
PARAMETER
Supply Range
CM Input Voltage Range
Common Mode Rejection Ratio
Swing Output High (with Respect to V
+
)
Swing Output Low (with Respect to V
)
Input Referred Offset Voltage
V
+
Quiescent Current
Open Circuit Voltage
REF Pin Input Range
V
CM
= 0V , 7V
P-P
, f = 100kHz
R
LOAD
= Open
R
LOAD
= Open
T
A
= 25°C, V
CM
> 5.5V
V
CM
> 5.5V
V
S
= 5V
2.44
1.25
CONDITIONS
MIN
4.5
–5
80
100
5
150
550
1.55
2.5
2.55
V
+
– 1.5
125
225
TYP
MAX
5.5
80
UNITS
V
V
dB
mV
mV
μV
mA
V
V
OPERATING PRINCIPLES
The LT1999 operates by amplifying the voltage drop
across a user selected sense resistor. The voltage across
the resistor is amplified by a fixed gain of 10V/V, 20V/V
or 50V/V(LT1999-10,LT1999-20,LT1999-50) and is level
shifted to the OUT pin of the device. The voltage difference
and polarity with respect to the V
REF
pin voltage indicates
the magnitude and direction of the current in the sense
resistor.
dc1698afa
1

DC1698A-B Related Products

DC1698A-B DC1698A-C DC1698A-A
Description Amplifier IC Development Tool LT1999-20 (MS8) Demoboard Amplifier IC Development Tool LT1999-50 (MS8) Demoboard Amplifier IC Development Tool LT1999-10 (MS8) Demoboard
Maker ADI ADI ADI
Product Category Amplifier IC Development Tools Amplifier IC Development Tools Amplifier IC Development Tools
Shipping restrictions Mouser does not currently sell this product. Mouser does not currently sell this product. Mouser does not currently sell this product.
product Demonstration Boards Demonstration Boards Demonstration Boards
type Current Sense Current Sense Current Sense
Tools for assessment LT1999IMS8-20 LT1999IMS8-50 LT1999IMS8-10
Working power voltage 4.5 V to 5.5 V 4.5 V to 5.5 V 4.5 V to 5.5 V
series LT1999 LT1999 LT1999
Factory packaging quantity 1 1 1
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