Datasheet
OPA890
www.ti.com
SBOS369B –MAY 2007–REVISED DECEMBER 2009
ELECTRICAL CHARACTERISTICS: V
S
= +5V
Boldface limits are tested at +25°C.
At R
F
= 750Ω, G = +2V/V, and R
L
= 100Ω, unless otherwise noted.
OPA890ID, IDBV
TYP MIN/MAX OVER TEMPERATURE
0°C to –40°C to MIN/ TEST
PARAMETER CONDITIONS +25°C +25°C
(2)
+70°C
(3)
+85°C
(3)
UNITS MAX LEVEL
(1)
AC PERFORMANCE
Small-Signal Bandwidth G = +1V/V, V
O
= 100mV
PP
, R
F
= 0Ω 220 MHz typ C
G = +2V/V, V
O
= 100mV
PP
105 70 60 55 MHz min B
G = +10V/V, V
O
= 100mV
PP
12 8 6.8 6.3 MHz min B
Gain Bandwidth Product G > +20V/V 125 90 75 70 MHz min B
Bandwidth for 0.1dB Flatness G = +2V/V, V
O
= 100mV
PP
16 MHz typ C
Peaking at a Gain of +1V/V V
O
< 100mV
PP
2 dB typ C
Large-Signal Bandwidth G = +2V/V, V
O
= 2V
PP
130 MHz typ C
Slew Rate G = +2V/V, V
O
= 2V Step 350 250 200 175 V/μs min B
Rise-and-Fall Time 0.2V Step 3.8 ns typ C
Settling Time to 0.02% G = +1V/V, V
O
= 2V Step 18 ns typ C
Settling Time to 0.1% 12 ns typ C
Harmonic Distortion G = +2V/V, f = 1MHz, V
O
= 2V
PP
2nd-Harmonic R
L
= 200Ω –85 –76 -73 -72 dBc max B
R
L
≥ 500Ω –90 –78 –74 –73 dBc max B
3rd-Harmonic R
L
= 200Ω –85 –81 –79 –78 dBc max B
R
L
≥ 500Ω –87 –84 –82 –81 dBc max B
Input Voltage Noise f > 100kHz 8.1 9.1 10.1 11.1 nV/√Hz max B
Input Current Noise f > 100kHz 1.1 1.4 1.7 2.0 pA/√Hz max B
Differential Gain G = +2V/V, V
O
= 1.4V
PP
, R
L
= 150Ω 0.06 % typ C
Differential Phase G = +2V/V, V
O
= 1.4V
PP
, R
L
= 150Ω 0.04 ° typ C
Channel-to-Channel Crosstalk f = 5MHz, Input-Referred –68 dB typ C
DC PERFORMANCE
(4)
Open-Loop Voltage Gain (A
OL
) V
O
= V
S
/2, R
L
= 100Ω 60 55 54 52 dB min A
Input Offset Voltage V
CM
= V
S
/2 ±1 ±5 ±5.7 ±6 mV max A
Average Offset Voltage Drift V
CM
= V
S
/2 ±15 ±15 μV/°C max B
Input Bias Current V
CM
= V
S
/2 ±0.1 ±1.7 ±1.9 ±2.1 μA max A
Average Input Bias Current Drift V
CM
= V
S
/2 ±5 ±6 nA/°C max B
Input Offset Current V
CM
= V
S
/2 ±70 ±400 ±500 ±550 nA max A
Average Input Offset Current Drift V
CM
= V
S
/2 ±2.5 ±2.5 nA/°C max B
INPUT
Most Positive Input Voltage
(5)
+4 +3.7 +3.65 +3.6 V min A
Least Positive Input Voltage
(5)
+1 +1.3 +1.3 +1.4 V max A
Common-Mode Rejection Ratio (CMRR) V
CM
= V
S
/2, Input-Referred 65 59 56 55 dB min A
Input Impedance
Differential V
CM
= V
S
/2 190 || 0.6 kΩ || pF typ C
Common-Mode V
CM
= V
S
/2 3.2 || 0.9 MΩ || pF typ C
OUTPUT
Most Positive Output Voltage No Load +4.0 +3.9 +3.85 +3.8 V min A
R
L
= 100Ω +3.9 +3.75 +3.7 +3.65 V min A
Least Positive Output Voltage No Load +1.0 +1.1 +1.15 +1.2 V max A
R
L
= 100Ω +1.1 +1.35 +1.4 +1.45 V max A
Output Current: Sourcing, Sinking V
O
= V
S
/2 ±35 ±30 ±28 ±25 mA min A
Short-Circuit Output Current Output Shorted to Ground ±65 mA typ C
Closed-Loop Output Impedance G = +2V/V, f = 100kHz 0.04 Ω typ C
(1) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization
and simulation. (C) Typical value only for information.
(2) Junction temperature = ambient for +25°C tested specifications.
(3) Junction temperature = ambient at low temperature limit; junction temperature = ambient +2°C at high temperature limit for over
temperature specifications.
(4) Current is considered positive out-of-node. V
CM
is the input common-mode voltage.
(5) Tested < 3dB below minimum specified CMRR at ±CMIR limits
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