OPA211_08 Datasheet, PDF (4/17 Pages) Texas Instruments – 1.1nV/√Hz Noise, Low Power, Precision Operational Amplifier in Small DFN-8 Package

OPA211
OPA2211
SBOS377D – OCTOBER 2006 – REVISED FEBRUARY 2008
www.ti.com
ELECTRICAL CHARACTERISTICS: V_S = ±2.25V to ±18V
BOLDFACE limits apply over the specified temperature range, T_A = –40°C to +125°C.
At T_A = +25°C and R_L = 10kΩ, unless otherwise noted.
Standard Grade
OPA211A, OPA2211A
PARAMETER
CONDITIONS
MIN
TYP
MAX
OFFSET VOLTAGE
Input Offset Voltage
Drift
vs Power Supply
Over Temperature
V_OS
dV_OS/dT
PSRR
V_S = ±15V
V_S = ±2.25V to ±18V
±30
±125
0.35
0.1
1
3
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
I_B
V_CM = 0V
±60
±175
±200
Offset Current
Over Temperature
I_OS
V_CM = 0V
±25
±100
±150
NOISE
Input Voltage Noise
e_n
f = 0.1Hz to 10Hz
80
Input Voltage Noise Density
f = 10Hz
2
f = 100Hz
1.4
f = 1kHz
1.1
Input Current Noise Density
i_n
f = 10Hz
3.2
f = 1kHz
1.7
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
INPUT IMPEDANCE
V_CM
V_S ≥ ±5V
(V–) + 1.8
(V+) – 1.4
V_S < ±5V
(V–) + 2
(V+) – 1.4
CMRR
V_S ≥ ±5V, (V–) + 2V ≤ V_CM ≤ (V+) – 2V
114
120
V_S < ±5V, (V–) + 2V ≤ V_CM ≤ (V+) – 2V
110
120
Differential
20k || 8
Common-Mode
10⁹ || 2
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over Temperature
FREQUENCY RESPONSE
A_OL
(V–) + 0.2V ≤ V_O ≤ (V+) – 0.2V,
R_L = 10kΩ
A_OL
(V–) + 0.6V ≤ V_O ≤ (V+) – 0.6V,
R_L = 600Ω
A_OL
(V–) + 0.6V ≤ V_O ≤ (V+) – 0.6V,
I_O ≤ 15mA
A_OL
(V–) + 0.6V ≤ V_O ≤ (V+)–0.6V
15mA ≤ I_O ≤ 30mA
114
130
110
114
110
103
Gain-Bandwidth Product
GBW
G = 100
80
G=1
45
Slew Rate
SR
27
Settling Time, 0.01%
0.0015% (16-bit)
Overload Recovery Time
t_S V_S = ±15V, G = –1, 10V Step, C_L = 100pF
400
V_S = ±15V, G = –1, 10V Step, C_L = 100pF
700
G = –10
500
Total Harmonic Distortion + Noise
THD+N
G = +1, f = 1kHz,
V_O = 3V_RMS, R_L = 600Ω
0.000015
–136
UNIT
µV
µV/°C
µV/V
µV/V
nA
nA
nA
nA
nV_PP
nV/√Hz
nV/√Hz
nV/√Hz
pA/√Hz
pA/√Hz
V
V
dB
dB
Ω || pF
Ω || pF
dB
dB
dB
dB
MHz
MHz
V/µs
ns
ns
ns
%
dB
4
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