LTC6915IDE 查看數據表（PDF） - Linear Technology

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LTC6915IDE

Zero Drift, Precision Instrumentation Amplifier with Digitally Programmable Gain

Linear Technology 

LTC6915

Electrical Characteristics The l denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C.

SYMBOL PARAMETER

V+ = 3V, V– = 0V, VREF = 200mV

Gain Error (Note 2)

Gain Error (Note 2)

Gain Error (Note 2)

Gain Error (Note 2)

Gain Nonlinearity

VOS

Input Offset Voltage (Note 3)

Average Input Offset Drift (Note 3)

IB

Average Input Bias Current (Note 4)

IOS

Average Input Offset Current (Note 4)

en

Input Noise Voltage

V+ = 3V, V– = 0V, VREF = 200mV

CMRR

Common Mode Rejection Ratio

PSRR

Power Supply Rejection Ratio (Note 5)

Output Voltage Swing High (Referenced to V–)

Output Voltage Swing Low (Referenced to V–)

CONDITIONS

AV = 1 (RL =10k)

AV = 2 to 32 (RL = 10k)

AV = 64 to 1024 (RL = 10k)

AV = 2048, 4096 (RL = 10k)

AV = 1

VCM = 200mV

TA = –40°C to 85°C

TA = 85°C to 125°C

VCM = 1.2V

VCM = 1.2V

DC to 10Hz

AV = 1024, VCM = 0V to 3V, LTC6915C

AV = 1024, VCM = 0.1V to 2.9V, LTC6915I

AV = 1024, VCM = 0V to 3V, LTC6915I

AV = 1024, VCM = 0.1V to 2.9V, LTC6915H

AV = 1024, VCM = 0V to 2.97V, LTC6915H

VS = 2.7V to 6V

Sourcing 200µA

Sourcing 2mA

Sinking 200µA

Sinking 2mA

MIN TYP

l –0.075 0

l –0.5

0

l –0.6 –0.1

l –1

–0.2

l

3

–3

l

l

l

5

l

1.5

2.5

l 100 119

l 100 119

l 95

119

l 100

l 85

l 110 116

l 2.95 2.98

l 2.75 2.87

l

18

l

130

MAX

0.075

0.5

0.6

1.0

15

±10

±50

±100

10

3

50

300

Supply Current, Parallel Mode

Supply Current, Serial Mode (Note 6)

No Load at OUT, VCM = 200mV

l

No Load at OUT, Capacitive Load at

l

DOUT (CL) = 15pF, Continuous CLK

Frequency = 4MHz, CS = LOW,

Gain Control Code = 0001

0.88 1.3

1.1 1.65

Supply Current Shutdown

VSHDN = 2.7V (Hardware Shutdown)

l

VSHDN = 1V, Gain Control Code = 0000

l

(Software Shutdown)

1

4

125 180

SHDN Input High

l 2.7

SHDN Input Low

l

1

SHDN and HOLD_THRU Input Current (Note 2)

l

5

Internal Op Amp Gain Bandwidth

200

Slew Rate

0.2

Internal Sampling Frequency

V+ = 5V, V– = 0V, VREF = 200mV

Gain Error (Note 2)

Gain Error (Note 2)

Gain Error (Note 2)

Gain Error (Note 2)

Gain Nonlinearity

AV = 1 (RL = 10k)

AV = 2 to 32 (RL= 10k)

AV = 64 to 1024 (RL = 10k)

AV = 2048, 4096 (RL = 10k)

AV = 1

3

l –0.075 0

l –0.5

0

l –0.6 –0.1

l –1

–0.2

l

3

0.075

0.5

0.6

1

15

UNITS

%

%

%

%

ppm

µV

nV/°C

nV/°C

nA

nA

µVP-P

dB

dB

dB

dB

dB

dB

V

V

mV

mV

mA

mA

µA

µA

V

V

µA

kHz

V/µs

kHz

%

%

%

%

ppm

6915fb

3

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