OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC6915CGN#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
LTC6915
1
6915fb
Typical applicaTion
FeaTures DescripTion
Zero Drift, Precision
Instrumentation Amplifier with
Digitally Programmable Gain
The LTC
®
6915 is a precision programmable gain instru-
mentation amplifier. The gain can be programmed to 0,
1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, or 4096
through a parallel or serial interface. The CMRR is typi-
cally 125dB with a single 5V supply with any programmed
gain. The offset is below 10µV with a temperature drift of
less than 50nV/°C.
The LTC6915 uses charge balanced sampled data tech-
niques to convert a differential input voltage into a single
ended signal that is in turn amplified by a zero-drift op-
erational amplifier.
The differential inputs operate from rail-to-rail and the
single-ended output swings from rail-to-rail. The LTC6915
can be used in single power supply applications as low as
2.7V, or with dual ±5V supplies. The LTC6915 is available
in a 16-lead SSOP package and a 12-lead DFN surface
mount package.
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
Differential Bridge Amplifier with Gain Programmed through the Serial Interface
applicaTions
n
14 Levels of Programmable Gain
n
125dB CMRR Independent of Gain
n
Gain Accuracy 0.1% (Typ)
n
Maximum Offset Voltage of 10µV
n
Maximum Offset Voltage Drift: 50nV/°C
n
Rail-to-Rail Input and Output
n
Parallel or Serial (SPI) Interface for Gain Setting
n
Supply Operation: 2.7V to ±5.5V
n
Typical Noise: 2.5µV
P-P
(0.01Hz to 10Hz)
n
16-Lead SSOP and 12-Lead DFN Packages
n
Thermocouple Amplifiers
n
Electronic Scales
n
Medical Instrumentation
n
Strain Gauge Amplifier
n
High Resolution Data Acquisition
–
+
3V
RESISTOR
ARRAY
MUX
4-BIT
LATCH
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
8-BIT
SHIFT-REGISTER
HOLD_THRU
µP
TO OTHER
DEVICES
CS(D0)
D
IN
(D1)
CLK(D2)
D
OUT
(D3)
PARALLEL_SERIAL
IN
+
IN
_
3
2
11
6
7
8
9
R < 10k
C
S
C
H
LTC6915 SSOP PACKAGE
0.1µF
V
+
V
–
SHDN
DGND
13
5
16
10
1
4
OUT
REF
15
14
C
F
6915 TA01
SENSE
3V
LTC6915
2
6915fb
absoluTe MaxiMuM raTings
Total Supply Voltage (V
+
to V
–
) ................................. 11V
Input Current ........................................................ ±10mA
|V
IN
+
– V
REF
| ........................................................5.5V
|V
IN
–
– V
REF
| ........................................................5.5V
|V
+
– V
DGND
| ........................................................5.5V
|V
DGND
– V
–
| ........................................................5.5V
Digital Input Voltage........................................... V
–
to V
+
Operating Temperature Range
LTC6915C ..............................................–0°C to 70°C
LTC6915I .............................................–40°C to 85°C
LTC6915H .......................................... –40°C to 125°C
Junction Temperature
(GN Package) .................................................... 150°C
(DFN Package) .................................................. 125°C
Storage Temperature
(GN Package) ..................................... –65°C to 150°C
(DFN Package) ................................... –65°C to 125°C
Lead Temperature (Soldering 10 sec) ....................300°C
(Note 1)
12
11
10
9
8
7
13
V
–
1
2
3
4
5
6
V
+
OUT
REF
PARALLEL_SERIAL
DGND
D
OUT
(D3)
IN
–
IN
+
V
–
CS(D0)
D
IN
(D1)
CLK(D2)
TOP VIEW
DE12 PACKAGE
12-LEAD (4mm × 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 160°C/W
EXPOSED PAD (PIN 13) IS V
–
, MUST BE SOLDERED TO PCB
TOP VIEW
GN PACKAGE
16-LEAD NARROW PLASTIC SSOP
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SHDN
IN
–
IN
+
V
–
HOLD_THRU
CS(D0)
D
IN
(D1)
CLK(D2)
V
+
OUT
SENSE
REF
NC
PARALLEL_SERIAL
DGND
D
OUT
(D3)
T
JMAX
= 150°C, θ
JA
= 135°C/W
pin conFiguraTion
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC6915CDE#PBF LTC6915CDE#TRPBF 6915
12-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC6915IDE#PBF LTC6915IDE#TRPBF 6915I
12-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LTC6915CGN#PBF LTC6915CGN#TRPBF 6915 16-Lead Narrow Plastic SSOP 0°C to 70°C
LTC6915IGN#PBF LTC6915IGN#TRPBF 6915I 16-Lead Narrow Plastic SSOP –40°C to 85°C
LTC6915HGN#PBF LTC6915HGN#TRPBF 6915H 16-Lead Narrow Plastic SSOP –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC6915CDE LTC6915CDE#TR 6915
12-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
LTC6915IDE LTC6915IDE#TR 6915I
12-Lead (4mm × 3mm) Plastic DFN
–40°C to 85°C
LTC6915CGN LTC6915CGN#TR 6915 16-Lead Narrow Plastic SSOP 0°C to 70°C
LTC6915IGN LTC6915IGN#TR 6915I 16-Lead Narrow Plastic SSOP –40°C to 85°C
LTC6915HGN LTC6915HGN#TR 6915H 16-Lead Narrow Plastic SSOP –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LTC6915
3
6915fb
elecTrical characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
+
= 3V, V
–
= 0V, V
REF
= 200mV
Gain Error (Note 2) A
V
= 1 (R
L
=10k)
l
–0.075 0 0.075 %
Gain Error (Note 2) A
V
= 2 to 32 (R
L
= 10k)
l
–0.5 0 0.5 %
Gain Error (Note 2) A
V
= 64 to 1024 (R
L
= 10k)
l
–0.6 –0.1 0.6 %
Gain Error (Note 2) A
V
= 2048, 4096 (R
L
= 10k)
l
–1 –0.2 1.0 %
Gain Nonlinearity A
V
= 1
l
3 15 ppm
V
OS
Input Offset Voltage (Note 3) V
CM
= 200mV –3 ±10 µV
Average Input Offset Drift (Note 3) T
A
= –40°C to 85°C
T
A
= 85°C to 125°C
l
l
±50
±100
nV/°C
nV/°C
I
B
Average Input Bias Current (Note 4) V
CM
= 1.2V
l
5 10 nA
I
OS
Average Input Offset Current (Note 4) V
CM
= 1.2V
l
1.5 3 nA
en Input Noise Voltage DC to 10Hz 2.5 µV
P-P
V
+
= 3V, V
–
= 0V, V
REF
= 200mV
CMRR Common Mode Rejection Ratio A
V
= 1024, V
CM
= 0V to 3V, LTC6915C
A
V
= 1024, V
CM
= 0.1V to 2.9V, LTC6915I
A
V
= 1024, V
CM
= 0V to 3V, LTC6915I
A
V
= 1024, V
CM
= 0.1V to 2.9V, LTC6915H
A
V
= 1024, V
CM
= 0V to 2.97V, LTC6915H
l
l
l
l
l
100
100
95
100
85
119
119
119
dB
dB
dB
dB
dB
PSRR Power Supply Rejection Ratio (Note 5) V
S
= 2.7V to 6V
l
110 116 dB
Output Voltage Swing High (Referenced to V
–
) Sourcing 200µA
Sourcing 2mA
l
l
2.95
2.75
2.98
2.87
V
V
Output Voltage Swing Low (Referenced to V
–
) Sinking 200µA
Sinking 2mA
l
l
18
130
50
300
mV
mV
Supply Current, Parallel Mode No Load at OUT, V
CM
= 200mV
l
0.88 1.3 mA
Supply Current, Serial Mode (Note 6) No Load at OUT, Capacitive Load at
D
OUT
(C
L
) = 15pF, Continuous CLK
Frequency = 4MHz, CS = LOW,
Gain Control Code = 0001
l
1.1 1.65 mA
Supply Current Shutdown V
SHDN
= 2.7V (Hardware Shutdown)
V
SHDN
= 1V, Gain Control Code = 0000
(Software Shutdown)
l
l
1
125
4
180
µA
µA
SHDN Input High
l
2.7 V
SHDN Input Low
l
1 V
SHDN and HOLD_THRU Input Current (Note 2)
l
5 µA
Internal Op Amp Gain Bandwidth 200 kHz
Slew Rate 0.2 V/µs
Internal Sampling Frequency 3 kHz
V
+
= 5V, V
–
= 0V, V
REF
= 200mV
Gain Error (Note 2) A
V
= 1 (R
L
= 10k)
l
–0.075 0 0.075 %
Gain Error (Note 2) A
V
= 2 to 32 (R
L
= 10k)
l
–0.5 0 0.5 %
Gain Error (Note 2) A
V
= 64 to 1024 (R
L
= 10k)
l
–0.6 –0.1 0.6 %
Gain Error (Note 2) A
V
= 2048, 4096 (R
L
= 10k)
l
–1 –0.2 1 %
Gain Nonlinearity A
V
= 1
l
3 15 ppm
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

LTC6915CGN#TRPBF

Mfr. #:
Buy LTC6915CGN#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
Instrumentation Amplifiers Zero-Drift R-R Precision Inst Amp w/ PGA
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet