Datasheet
OPA170
OPA2170
OPA4170
www.ti.com
SBOS557B –AUGUST 2011–REVISED SEPTEMBER 2012
ELECTRICAL CHARACTERISTICS
Boldface limits apply over the specified temperature range, T
A
= –40°C to +125°C.
At T
A
= +25°C, V
CM
= V
OUT
= V
S
/2, and R
L
= 10kΩ connected to V
S
/2, unless otherwise noted.
OPA170, OPA2170, OPA4170
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
Input offset voltage V
OS
0.25 ±1.8 mV
Over temperature ±2 mV
Drift dV
OS
/dT ±0.3 ±2 µV/°C
vs power supply PSRR V
S
= +4V to +36V 1 ±5 µV/V
Channel separation, dc dc 5 µV/V
INPUT BIAS CURRENT
Input bias current I
B
±8 ±15 pA
Over temperature ±3.5 nA
Input offset current I
OS
±4 ±15 pA
Over temperature ±3.5 nA
NOISE
Input voltage noise f = 0.1Hz to 10Hz 2 µV
PP
f = 100Hz 22 nV/√Hz
Input voltage noise density e
n
f = 1kHz 19 nV/√Hz
INPUT VOLTAGE
Common-mode voltage range
(1)
V
CM
(V–) – 0.1V (V+) – 2V V
V
S
= ±2V, (V–) – 0.1V < V
CM
< (V+) – 2V 90 104 dB
Common-mode rejection ratio CMRR
V
S
= ±18V, (V–) – 0.1V < V
CM
< (V+) – 2V 104 120 dB
INPUT IMPEDANCE
Differential 100 || 3 MΩ || pF
Common-mode 6 || 3
10
12
Ω || pF
OPEN-LOOP GAIN
V
S
= +4V to +36V, (V–) + 0.35V < V
O
< (V+) –
Open-loop voltage gain A
OL
110 130 dB
0.35V
FREQUENCY RESPONSE
Gain bandwidth product GBP 1.2 MHz
Slew rate SR G = +1 0.4 V/µs
To 0.1%, V
S
= ±18V, G = +1, 10V step 20 µs
Settling time t
S
To 0.01% (12 bit), V
S
= ±18V, G = +1, 10V step 28 µs
Overload recovery time V
IN
× Gain > V
S
2 µs
Total harmonic distortion + noise THD+N G = +1, f = 1kHz, V
O
= 3V
RMS
0.0002 %
OUTPUT
Voltage output swing from rail V
O
I
L
= 0mA, V
S
= +4V to +36V 10 mV
Positive rail
I
L
sourcing 1mA, V
S
= +4V to +36V 115 mV
I
L
= 0mA, V
S
= +4V to +36V 8 mV
Negative Rail
I
L
sinking 1mA, V
S
= +4V to +36V 70 mV
V
S
= 5V, R
L
= 10kΩ (V–) + 0.03 (V+) – 0.05 V
Over temperature
R
L
= 10kΩ, A
OL
≥ 110dB (V–) + 0.35 (V+) – 0.35 V
Short-circuit current I
SC
+17/–20 mA
Capacitive load drive C
LOAD
See Typical Characteristics pF
Open-loop output resistance R
O
f = 1MHz, I
O
= 0A 900 Ω
POWER SUPPLY
Specified voltage range V
S
+2.7 +36 V
Quiescent current per amplifier I
Q
I
O
= 0A 110 145 µA
Over temperature I
O
= 0A 155 µA
(1) The input range can be extended beyond (V+) – 2V up to V+. See the Typical Characteristics and Application Information sections for
additional information.
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