LTC6102HV Linear Technology, LTC6102HV Datasheet - Page 7

• Manufacturer Part Number: LTC6102HV
• Description: Zero Drift High Side Current Sense Amplifier
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
PIN FUNCTIONS
BLOCK DIAGRAM
–INS (Pin 1): Amplifi er Inverting Input. When tied to –INF,
the internal sense amplifi er will drive –INS to the same
potential as +IN.
–INF (Pin 2): Force Input. This pin carries the input
current from R
resistor (R
I
ternal R
V
OUT (Pin 4): Open-Drain Current output. OUT will source a
current that is proportional to the sense voltage into an ex-
OUT
–
(Pins 3, 5): Negative Supply.
= V
SENSE
SENSE
IN
) tied from V
.
/R
IN
IN
and must be tied to –INS near R
. V
–1
–2
–3
–4
–5
5
4
3
2
1
0
0
SENSE
Input Referred Noise
0.1Hz to 10Hz
T
V
R
R
V
I
A
+
IN
OUT
SENSE
LOAD
1
= 25°C
= 12V
+
= 10Ω
O
A
D
L
= 1k
to –INF sets the output current
2
= 2mV
is the voltage across the ex-
Figure 1. LTC6102/LTC6102HV Block Diagram and Typical Connection
3
–
V
R
SENSE
SENSE
4
TIME (s)
5
+
R
IN
6
+IN
–INF
–INS
LTC6102/LTC6102HV
7
8
10V
6102 G20
9
5k
5k
10
IN
5V
. A
10V
V
–
–
+
V
BATTERY
ternal resistor. I
V
larger) capacitor should be tied from V
not designed to drive external circuits.
V
through this pin.
+IN (Pin 8): Amplifi er Non-Inverting Input. Must be tied
to the system load end of the sense resistor.
Exposed Pad (Pin 9, DFN Only): V
must be soldered to PCB.
REG
+
(Pin 7): Positive Supply. Supply current is drawn
V
V
–
+
(Pin 6): Internal Regulated Supply. A 0.1μF (or
10V
0.1μF
5V
2
1
0
100
Noise Spectral Density
V
REG
OUT
6102 BD
LTC6102/LTC6102HV
OUT
1k
I
OUT
is the same current that enters –INF.
FREQUENCY (Hz)
R
OUT
V
OUT
10k
= V
SENSE
x
R
100k
R
OUT
IN
6102 G21
–
. The Exposed Pad
REG
1M
to V
+
. V
REG
7
6102f
is