Datasheet

OPA4872
www.ti.com SBOS346C –JUNE 2007–REVISED MARCH 2011
ELECTRICAL CHARACTERISTICS: V
S
= ±5V
At T
A
= +25°C, G = +2V/V, R
F
= 523Ω, and R
L
= 150Ω, unless otherwise noted.
OPA4872
MIN/MAX OVER
TYP 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 V
O
= 500mV
PP
, R
L
= 150Ω 500 375 360 355 MHz min B
Bandwidth for 0.1dB flatness V
O
= 500mV
PP
, R
L
= 150Ω 120 MHz typ C
Large-signal bandwidth V
O
= 2V
PP
, R
L
= 150Ω 500 400 370 350 MHz min B
Slew rate 4V step 2300 2150 2025 2000 V/μs min B
Rise time and fall time 4V step 1.25 1.4 1.45 1.5 ns max B
Settling time to 0.05% 2V step 15 ns typ C
to 0.1% 2V step 14 17 17.5 18 ns max B
Channel switching time 10 12 12.5 13 ns max B
Harmonic distortion G = +2V/V, f = 10MHz, V
O
= 2V
PP
2nd-harmonic R
L
= 150Ω –60 –56 –52 –50 dBc max B
3rd-harmonic R
L
= 150Ω –78 –75 –72 –70 dBc max B
Input voltage noise f > 100kHz 4.5 5.4 5.8 6.2 nV/√Hz max B
Noninverting input current noise f > 100kHz 4.0 4.8 5.0 5.2 pA/√Hz max B
Inverting input current noise f > 100kHz 19 22 23 24 pA/√Hz max B
Differential gain G = +2V/V, PAL, V
O
= 1.4V
P
0.035 % typ C
Differential phase G = +2V/V, PAL, V
O
= 1.4V
P
0.005 ° typ C
All hostile crosstalk, input-referred Three channels driven at 5MHz, 1V
PP
–80 dB typ C
Three channels driven at 30MHz, 1V
PP
–66 dB typ C
DC PERFORMANCE
Open-loop transimpedance (Z
OL
) V
O
= 0V, R
L
= 100Ω 103 92 90 86 kΩ min A
Input offset voltage V
CM
= 0V ±1 ±5 ±5.7 ±6.3 mV max A
Average Input offset voltage drift V
CM
= 0V ±15 ±20 μV/°C max B
Input offset voltage matching V
CM
= 0V ±1 ±5 ±5.5 ±6 mV max A
Noninverting input bias current V
CM
= 0V ±4 ±14 ±14.7 ±15.3 μA max A
Average noninverting input bias current V
CM
= 0V ±15 ±20 nA/°C max B
Inverting bias current V
CM
= 0V ±4 ±18 ±21.4 ±22.9 μA max A
Average inverting input bias current V
CM
= 0V ±75 ±75 nA/°C max B
INPUT
Common-mode input range (CMIR) Each noninverting input ±2.7 ±2.55 ±2.5 ±2.45 V min A
Common-mode rejection ratio (CMRR) V
CM
= 0V, input-referred, noninverting input 56 50 49 48 dB min A
Input resistance
Noninverting Channel enabled 2.5 MΩ typ C
Inverting open loop 70 Ω typ C
Input capacitance
Noninverting Channel selected 0.9 pF typ C
Channel deselected 0.9 pF typ C
Chip disabled 0.9 pF typ C
OUTPUT
Output voltage swing R
L
≥ 1kΩ ±4 ±3.9 ±3.85 ±3.8 V min A
R
L
= 150Ω ±3.7 ±3.55 ±3.5 ±3.45 V min A
Output current V
O
= 0V ±75 ±48 ±47 ±45 mA min A
Short-circuit output current Output shorted to ground ±100 mA typ C
Closed-Loop output impedance G = +2V/V, f ≤ 100kHz 0.03 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 +9°C at high temperature limit for over
temperature specifications.
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