OPA379AIDBVR Datasheet, PDF (4/29 Pages) Texas Instruments – 1.8V, 2.9mA, 90kHz, Rail-to-Rail I/O PERATIONAL AMPLIFIERS

OPA379
OPA2379
OPA4379
SBOS347D – NOVEMBER 2005 – REVISED MAY 2008 ................................................................................................................................................... www.ti.com
ELECTRICAL CHARACTERISTICS: V_S = +1.8V to +5.5V
Boldface limits apply over the specified temperature range indicated.
At T_A = +25°C, R_L = 25kΩ connected to V_S/2, and V_CM < (V+) – 1V, unless otherwise noted.
OPA379, OPA2379, OPA4379
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
OFFSET VOLTAGE
Initial Offset Voltage
V_OS
Over –40°C to +125°C
V_S = 5V
0.4
1.5
2
Drift, –40°C to +85°C
dV_OS/dT
1.5
Drift, –40°C to +125°C
2.7
vs Power Supply
PSRR
2
10
Over –40°C to +125°C
20
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio⁽¹⁾
Over –40°C to +85°C
Over –40°C to +125°C
INPUT BIAS CURRENT
V_CM
CMRR
(V–) < V_CM < (V+) – 1V
(V–) < V_CM < (V+) – 1V
(V–) < V_CM < (V+) – 1V
(V–) – 0.1 to (V+) + 0.1
90
100
80
62
Input Bias Current
Input Offset Current
INPUT IMPEDANCE
I_B
V_S = 5V, V_CM ≤ V_S/2
I_OS
V_S = 5V
±5
±50
±5
±50
Differential
10¹³ || 3
Common-Mode
10¹³ || 6
NOISE
Input Voltage Noise
f = 0.1Hz to 10Hz
2.8
Input Voltage Noise Density
e_n
f = 1kHz
80
Input Current Noise Density
i_n
f = 1kHz
1
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over –40°C to +125°C
Over –40°C to +125°C
OUTPUT
A_OL V_S = 5V, R_L = 25kΩ, 100mV < V_O < (V+) – 100mV
100
120
V_S = 5V, R_L = 25kΩ, 100mV < V_O < (V+) – 100mV
80
V_S = 5V, R_L = 5kΩ, 500mV < V_O < (V+) – 500mV
100
120
V_S = 5V, R_L = 5kΩ, 500mV < V_O < (V+) – 500mV
80
Voltage Output Swing from Rail
Over –40°C to +125°C
Over –40°C to +125°C
Short-Circuit Current
Capacitive Load Drive
Closed-Loop Output Impedance
Open-Loop Output Impedance
FREQUENCY RESPONSE
Gain Bandwidth Product
I_SC
C_LOAD
R_OUT
R_O
GBW
R_L = 25kΩ
R_L = 25kΩ
R_L = 5kΩ
R_L = 5kΩ
G = 1, f = 1kHz, I_O = 0
f = 100kHz, I_O = 0
C_LOAD = 30pF
5
10
15
25
50
75
±5
See Typical Characteristics
10
28
90
Slew Rate
SR
G = +1
0.03
Overload Recovery Time
V_IN × GAIN > V_S
25
Turn-On Time
t_ON
1
(1) See Typical Characteristic gragh, Common-Mode Rejection Ratio vs Frequency (Figure 3).
UNIT
mV
mV
µV/°C
µV/°C
µV/V
µV/V
V
dB
dB
dB
pA
pA
Ω || pF
Ω || pF
µV_PP
nV/√Hz
fA/√Hz
dB
dB
dB
dB
mV
mV
mV
mV
mA
Ω
kΩ
kHz
V/µs
µs
ms
4
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