Changes to Gain vs. Temperature Parameter, Table 3 ..................6
Changes to Gain Selection Section .............................................. 19
Changes to Reference Terminal Section and Input Voltage
Range Section.............................................................................. 20
Changes to Ordering Guide .......................................................... 25
1/09—Revision 0: Initial Version
Rev. C | Page 2 of 28
Data Sheet
SPECIFICATIONS
+V
S
= +15 V, −V
S
= −15 V, V
REF
= 0 V, T
A
= 25°C, G = 1, R
L
= 10 kΩ, specifications referred to input, unless otherwise noted.
Table 2.
Parameter
COMMON-MODE REJECTION RATIO (CMRR)
CMRR, DC to 60 Hz
G=1
G = 10
G = 100
G = 1000
CMRR at 5 kHz
G=1
G = 10
G = 100
G = 1000
NOISE
Voltage Noise
Input Voltage Noise, e
NI
Output Voltage Noise, e
NO
RTI
G=1
G = 10
G = 100 to 1000
Current Noise
VOLTAGE OFFSET
Input Offset, V
OSI
Average Temperature Coefficient
Output Offset, V
OSO
Average Temperature Coefficient
Offset RTI vs. Supply (PSR)
G=1
G = 10
G = 100
G = 1000
INPUT CURRENT
Input Bias Current
1
Conditions
V
CM
= −10 V to +10 V
Min
ARZ, ARMZ
Typ
Max
Min
BRZ, BRMZ
Typ
Max
AD8226
Unit
86
106
120
120
80
90
90
100
Total noise: e
N
= √(e
NI2
+ (e
NO
/G)
2
)
1 kHz
22
120
f = 0.1 Hz to 10 Hz
2
0.5
0.4
100
3
24
125
90
106
120
120
80
90
90
100
dB
dB
dB
dB
dB
dB
dB
dB
22
120
2
0.5
0.4
100
3
24
125
nV/√Hz
nV/√Hz
µV p-p
µV p-p
µV p-p
fA/√Hz
pA p-p
f = 1 kHz
f = 0.1 Hz to 10 Hz
Total offset voltage:
V
OS
= V
OSI
+ (V
OSO
/G)
V
S
= ±5 V to ±15 V
T
A
= −40°C to +125°C
V
S
= ±5 V to ±15 V
T
A
= −40°C to +125°C
V
S
= ±5 V to ±15 V
100
115
120
120
T
A
= +25°C
T
A
= +125°C
T
A
= −40°C
T
A
= −40°C to +125°C
T
A
= +25°C
T
A
= +125°C
T
A
= −40°C
T
A
= −40°C to +125°C
5
5
5
0.5
2
100
2
600
10
100
115
120
120
0.5
1
50
1
400
5
µV
µV/°C
µV
µV/°C
dB
dB
dB
dB
Average Temperature Coefficient
Input Offset Current
20
15
30
70
27
25
35
1
1.5
2
5
5
5
20
15
30
70
27
25
35
0.5
0.5
0.5
Average Temperature Coefficient
REFERENCE INPUT
R
IN
I
IN
Voltage Range
Reference Gain to Output
Reference Gain Error
DYNAMIC RESPONSE
Small-Signal −3 dB Bandwidth
G=1
G = 10
G = 100
G = 1000
5
100
7
−V
S
1
0.01
+V
S
−V
S
5
100
7
+V
S
1
0.01
nA
nA
nA
pA/°C
nA
nA
nA
pA/°C
kΩ
µA
V
V/V
%
1500
160
20
2
Rev. C | Page 3 of 28
1500
160
20
2
kHz
kHz
kHz
kHz
AD8226
Parameter
Settling Time 0.01%
G=1
G = 10
G = 100
G = 1000
Slew Rate
GAIN
Gain Range
Gain Error
G=1
G = 5 to 1000
Gain Nonlinearity
G = 1 to 10
G = 100
G = 1000
Gain vs. Temperature
2
G=1
G>1
INPUT
Input Impedance
Differential
Common Mode
Input Operating Voltage Range
3
Conditions
10 V step
Min
ARZ, ARMZ
Typ
Max
25
15
40
350
0.4
0.6
1
V
OUT
±10 V
0.015
0.15
V
OUT
= −10 V to +10 V
R
L
≥ 2 kΩ
R
L
≥ 2 kΩ
R
L
≥ 2 kΩ
T
A
= −40°C to +85°C
T
A
= 85°C to 125°C
T
A
= −40°C to +125°C
V
S
= ±1.35 V to +36 V
0.8||2
0.4||2
T
A
= +25°C
T
A
= +125°C
T
A
= −40°C
T
A
= −40°C to +125°C
−V
S
− 0.1
−V
S
− 0.05
−V
S
− 0.15
+V
S
− 40
+V
S
− 0.8
+V
S
− 0.6
+V
S
− 0.9
−V
S
+ 40
−V
S
− 0.1
−V
S
− 0.05
−V
S
− 0.15
+V
S
− 40
10
75
750
5
5
−100
1000
1
Min
Data Sheet
BRZ, BRMZ
Typ
Max
25
15
40
350
0.4
0.6
1000
0.01
0.1
10
75
750
1
2
−100
Unit
µs
µs
µs
µs
V/µs
V/µs
V/V
%
%
ppm
ppm
ppm
ppm/°C
ppm/°C
ppm/°C
G=1
G = 5 to 100
G = 1 + (49.4 kΩ/R
G
)
0.8||2
0.4||2
+V
S
− 0.8
+V
S
− 0.6
+V
S
− 0.9
−V
S
+ 40
Input Overvoltage Range
OUTPUT
Output Swing
R
L
= 2 kΩ to Ground
GΩ||pF
GΩ||pF
V
V
V
V
T
A
= +25°C
T
A
= +125°C
T
A
= −40°C
R
L
= 10 kΩ to Ground
T
A
= +25°C
T
A
= +125°C
T
A
= −40°C
R
L
= 100 kΩ to Ground
T
A
= −40°C to +125°C
Short-Circuit Current
POWER SUPPLY
Operating Range
Quiescent Current
−V
S
+ 0.4
−V
S
+ 0.4
−V
S
+ 1.2
−V
S
+ 0.2
−V
S
+ 0.3
−V
S
+ 0.2
−V
S
+ 0.1
13
+V
S
− 0.7
+V
S
– 1.0
+V
S
– 1.1
+V
S
− 0.2
+V
S
− 0.3
+V
S
− 0.2
+V
S
− 0.1
−V
S
+ 0.4
−V
S
+ 0.4
−V
S
+ 1.2
−V
S
+ 0.2
−V
S
+ 0.3
−V
S
+ 0.2
−V
S
+ 0.1
13
+V
S
− 0.7
+V
S
– 1.0
+V
S
– 1.1
+V
S
− 0.2
+V
S
− 0.3
+V
S
− 0.2
+V
S
− 0.1
V
V
V
V
V
V
V
mA
V
µA
µA
µA
µA
°C
Dual-supply operation
T
A
= +25°C
T
A
= −40°C
T
A
= +85°C
T
A
= +125°C
±1.35
350
250
450
525
−40
TEMPERATURE RANGE
1
2
±18
425
325
525
600
+125
±1.35
350
250
450
525
−40
±18
425
325
525
600
+125
The input stage uses pnp transistors; therefore, input bias current always flows out of the part.
The values specified for G > 1 do not include the effects of the external gain-setting resistor, R
G
.
3
Input voltage range of the AD8226 input stage. The input range depends on the common-mode voltage, the differential voltage, the gain, and the reference voltage.
See the Input Voltage Range section for more information.
Rev. C | Page 4 of 28
Data Sheet
+V
S
= 2.7 V, −V
S
= 0 V, V
REF
= 0 V, T
A
= 25°C, G = 1, R
L
= 10 kΩ, specifications referred to input, unless otherwise noted.
嵌入式系统
