Datasheet

OP
A659
1
FEATURES DESCRIPTION
APPLICATIONS
TRANSIMPEDANCEGAIN
vsFREQUENCY(C =22pF)
D
130
120
110
100
90
80
70
60
50
40
T
ransimpedanceGain (dB )
W
100k
1M
10M 100M
Frequency(Hz)
R =1M ,C =Open
F F
W
R =1k ,C =4.7pF
F F
W
R =10k ,
C =Open
F
F
W
R =10k ,C =1.5pF
F F
W
R =100k ,C =Open
F F
W
R =100k ,
C =0.5pF
F
F
W
R =1k ,C =Open
F F
W
OPA659
+6V
R
OUT
0.1 Fm 10 Fm
0.1 Fm 10 Fm
-6V
50 LoadW
I
D
C
D
C
F
V
OUT
R
F
Photo
Diode
-V
B
l
OPA659
www.ti.com
............................................................................................................................................ SBOS342B DECEMBER 2008 REVISED AUGUST 2009
Wideband, Unity-Gain Stable, JFET-Input
OPERATIONAL AMPLIFIER
23
HIGH BANDWIDTH: 650MHz (G = +1V/V)
The OPA659 combines a very wideband, unity-gain
stable, voltage-feedback operational amplifier with a
HIGH SLEW RATE: 2550V/ µ s (4V Step)
JFET-input stage to offer an ultra-high dynamic range
EXCELLENT THD: 78dBc at 10MHz
amplifier for high impedance buffering in data
LOW INPUT VOLTAGE NOISE: 8.9nV/ Hz
acquisition applications such as oscilloscope
FAST OVERDRIVE RECOVERY: 8ns front-end amplifiers and machine vision applications
such as photodiode transimpedance amplifiers used
FAST SETTLING TIME (1% 4V Step): 8ns
in wafer inspection.
LOW INPUT OFFSET VOLTAGE: ± 1mV
The wide 650MHz unity-gain bandwidth is
LOW INPUT BIAS CURRENT: ± 10pA
complemented by a very high 2550V/ µ s slew rate.
HIGH OUTPUT CURRENT: 70mA
The high input impedance and low bias current
provided by the JFET input are supported by the low
8.9nV/ Hz input voltage noise to achieve a very low
HIGH-IMPEDANCE DATA ACQUISITION INPUT
integrated noise in wideband photodiode
AMPLIFIER
transimpedance applications.
HIGH-IMPEDANCE OSCILLOSCOPE INPUT
Broad transimpedance bandwidths are possible with
AMPLIFIER
the high 350MHz gain bandwidth product of this
WIDEBAND PHOTODIODE TRANSIMPEDANCE
device.
AMPLIFIER
Where lower speed with lower quiescent current is
WAFER SCANNING EQUIPMENT
required, consider the OPA656 . Where unity-gain
stability is not required, consider the OPA657 .
RELATED
OPERATIONAL AMPLIFIER
PRODUCTS
VOLTAGE
SLEW
BW
V
S
RATE NOISE AMPLIFIER
DEVICE (V) (MHz) (V/ µ s) (nV/ Hz) DESCRIPTION
Unity-Gain
OPA356 +5 200 300 5.80
Stable CMOS
Fixed Gain of
OPA653 ± 6 500 2675 6.1 +2V/V
JFET-Input
Unity-Gain
OPA656 ± 5 500 290 7 Stable
JFET-Input
Gain of +7
OPA657 ± 5 1600 700 4.8 Stable
JFET-Input
Unity-Gain
OPA627 ± 15 16 55 4.5 Stable
DI-FET-Input
Unity-Gain
THS4631 ± 15 105 900 7 Stable
JFET-Input
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2 PowerPAD is a trademark of Texas Instruments.
3 All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2008 2009, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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