Datasheet
OPA2890
www.ti.com
SBOS364C –DECEMBER 2007–REVISED DECEMBER 2009
ELECTRICAL CHARACTERISTICS: V
S
= +5V
At R
F
= 0Ω, G = +1V/V, and R
L
= 100Ω, unless otherwise noted.
OPA2890ID, IDGS
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 210 MHz typ C
G = +2V/V, V
O
= 100mV
PP
90 55 45 40 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 120 85 70 68 MHz min B
Bandwidth for 0.1dB flatness G = +2V/V, V
O
= 100mV
PP
15 MHz typ C
Peaking at a gain of +1V/V V
O
< 100mV
PP
0.2 dB typ C
Large-signal bandwidth G = +2V/V, V
O
= 2V
PP
100 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 80 71 68 67 dBc max B
R
L
≥ 500Ω 87 75 71 70 dBc max B
3rd harmonic R
L
= 200Ω 83 79 77 76 dBc max B
R
L
≥ 500Ω 86 83 81 80 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 ±2 ±5 ±6.6 ±7.1 mV max A
Average offset voltage drift V
CM
= V
S
/2 ±35 ±35 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 +3.63 +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 +4.1 +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 +0.9 +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
Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Link(s): OPA2890