Datasheet
(e ) +
NI
2
e
NO
G
2
Total RTI voltage noise = .
INA827
www.ti.com
SBOS631A –JUNE 2012–REVISED JULY 2013
ELECTRICAL CHARACTERISTICS
At T
A
= +25°C, V
S
= ±15 V, R
L
= 10 kΩ, V
REF
= 0 V, and G = 5, unless otherwise noted.
INA827
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT
RTI, V
OS
= V
OSI
+ (V
OSO
/ G) 40 150 µV
V
OSI
Input stage
T
A
= –40°C to +125°C 0.5 2.5 µV/°C
Offset voltage
(1)
RTI, V
OS
= V
OSI
+ (V
OSO
/ G) 500 2000 µV
V
OSO
Output stage
T
A
= –40°C to +125°C 5 30 µV/°C
G = 5, V
S
= ±1.35 V to ±18 V 100 120 dB
PSRR Power-supply rejection ratio G = 10, V
S
= ±1.35 V to ±18 V 106 126 dB
G > 100, V
S
= ±1.35 V to ±18 V 120 140 dB
Differential 2 || 1 GΩ || pF
Z
IN
Impedance
Common-mode 10 || 5 GΩ || pF
RFI filter, –3-dB frequency 25 MHz
V
S
= ±1.35 V to ±18 V, V
O
= 0 V (V–) – 0.2 (V+) – 0.9 V
V
CM
Operating input range
(2)
V
S
= ±1.35 V to ±18 V, V
O
= 0 V, T
A
= +125°C (V–) – 0.05 (V+) – 0.8 V
V
S
= ±1.35 V to ±18 V, V
O
= 0 V, T
A
= –40°C (V–) – 0.3 (V+) – 0.95 V
Input overvoltage range T
A
= –40°C to +125°C (V+) – 40 (V–) + 40 V
G = 5, V
CM
= V– to (V+) – 1 V 88 100 dB
DC to 60 Hz G = 10, V
CM
= V– to (V+) – 1 V 94 106 dB
G > 100, V
CM
= V– to (V+) – 1 V 110 126 dB
CMRR Common-mode rejection ratio
G = 5, V
CM
= V– to (V+) – 1 V 88 dB
At 5 kHz G = 10, V
CM
= V– to (V+) – 1 V 94 dB
G > 100, V
CM
= V– to (V+) – 1 V 104 dB
BIAS CURRENT
35 50 nA
I
B
Input bias current
T
A
= –40°C to +125°C 95 nA
–5 0.7 5 nA
I
OS
Input offset current
T
A
= –40°C to +125°C 10 nA
NOISE VOLTAGE
(3)
e
NI
Input f = 1 kHz, G = 1000, R
S
= 0 Ω 17 18 nV/√Hz
Voltage noise
e
NO
Output f = 1 kHz, G = 5, R
S
= 0 Ω 250 285 nV/√Hz
G = 5, f
B
= 0.1 Hz to 10 Hz, R
S
= 0 Ω 1.4 µV
PP
RTI Referred-to-input
G = 1000, f
B
= 0.1 Hz to 10 Hz, R
S
= 0 Ω 0.5 µV
PP
f = 1 kHz 120 fA/√Hz
i
N
Noise current
f
B
= 0.1 Hz to 10 Hz 5 pA
PP
(1) Total offset, referred-to-input (RTI): V
OS
= V
OSI
+ (V
OSO
/ G).
(2) Input voltage range of the INA827 input stage. The input range depends on the common-mode voltage, differential voltage, gain, and
reference voltage. See the Typical Characteristics for more information.
(3)
Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 3
Product Folder Links: INA827