Datasheet

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SBOS278B − SEPTEMBER 2003 − REVISED JANUARY 2004
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4
ELECTRICAL CHARACTERISTICS: V
S
= +4V to +12V or V
S
= ±2V to ±6V
Boldface limits apply over the specified temperature range, T
A
= −40°C to +125°C.
At T
A
= +25°C, R
L
= 10kΩ connected to V
S
/2, and V
OUT
= V
S
/2, unless otherwise noted.
OPA725, OPA726, OPA2725, OPA2726
PARAMETER CONDITIONS
MIN TYP MAX
UNIT
OFFSET VOLTAGE
Input Offset Voltage V
OS
OPA725, OPA726 V
S
= ±6V, V
CM
= 0V 1.2 3 mV
OPA2725, OPA2726 V
S
= ±6V, V
CM
= 0V 1.5 5 mV
Drift dV
OS
/dT 4 µV/°C
vs Power Supply PSRR V
S
= ±2V to ±6V, V
CM
= V− 30 100 µV/V
Over Temperature V
S
= ±2V to ±6V, V
CM
= V− 150 mV/V
Channel Separation, DC 1 µV/V
INPUT BIAS CURRENT
Input Bias Current I
B
30 200 pA
Over Temperature See Typical Characteristics
Input Offset Current I
OS
10 50 pA
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz e
n
V
S
= ±6V, V
CM
= 0V 10 µV
PP
Input Voltage Noise Density, f = 10kHz e
n
V
S
= ±6V, V
CM
= 0V 10 nV/√Hz
Input Voltage Noise Density, f = 100kHz e
n
V
S
= ±6V, V
CM
= 0V 6 nV/√Hz
Input Current Noise Density, f = 1kHz i
n
V
S
= ±6V, V
CM
= 0V 2.5 fA/√Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
(V−) (V+) − 2 V
Common-Mode Rejection Ratio CMRR (V−) ≤ V
CM
≤ (V+) − 2V 88 94 dB
Over Temperature (V−) ≤ V
CM
≤ (V+) − 2V 84 dB
(V−) ≤ V
CM
≤ (V+) − 3V 94 100 dB
Over Temperature (V−) ≤ V
CM
≤ (V+) − 3V 84 dB
INPUT IMPEDANCE
Differential 10
11
 5 Ω pF
Common-Mode 10
11
 4 Ω pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain A
OL
OPA725, OPA726 R
L
= 100kΩ, 0.15V < V
O
< (V+) − 0.15V 110 120 dB
Over Temperature R
L
= 100kΩ, 0.15V < V
O
< (V+) − 0.15V 100 dB
OPA2725, OPA2726 R
L
= 100kΩ, 0.175V < V
O
< (V+) − 0.175V 110 120 dB
Over Temperature R
L
= 100kΩ, 0.175V < V
O
< (V+) − 0.175V 100 dB
OPA725, OPA726 R
L
= 1kΩ, 0.25V < V
O
< (V+) − 0.25V 106 116 dB
Over Temperature R
L
= 1kΩ, 0.25V < V
O
< (V+) − 0.25V 96 dB
OPA2725, OPA2726 R
L
= 2kΩ, 0.25V < V
O
< (V+) − 0.25V 106 116 dB
Over Temperature R
L
= 2kΩ, 0.25V < V
O
< (V+) − 0.25V 96 dB
FREQUENCY RESPONSE C
L
= 20pF
Gain-Bandwidth Product GBW 20 MHz
Slew Rate SR G = +1 30 V/µs
Settling Time, 0.1% t
S
V
S
= ±6V, 5V Step, G = +1 350 ns
0.01% V
S
= ±6V, 5V Step, G = +1 450 ns
Overload Recovery Time V
IN
• Gain > V
S
50 ns
Total Harmonic Distortion + Noise THD+N V
S
= ±6V, V
OUT
= 2V
RMS
, R
L
= 600Ω,
G = +1, f = 1kHz
0.0003 %