OPA653_15 Datasheet, PDF (1/26 Pages) Texas Instruments – Wideband, Fixed Gain, JFET-Input AMPLIFIER

OPA653
OPA653
www.ti.com
SBOS348A – DECEMBER 2008 – REVISED NOVEMBER 2009
Wideband, Fixed Gain, JFET-Input AMPLIFIER
Check for Samples: OPA653
FEATURES
1
•23 HIGH BANDWIDTH: 500 MHz (G = +2 V/V)
• HIGH SLEW RATE: 2675 V/μs (4-V Step)
• EXCELLENT THD: –71dBc at 10 MHz
• LOW INPUT VOLTAGE NOISE: 6.1 nV/√Hz
• FAST OVERDRIVE RECOVERY: 8 ns
• FAST SETTLING TIME (1% 4-V Step): 7.9 ns
• LOW INPUT OFFSET VOLTAGE: ±1 mV
• LOW INPUT BIAS CURRENT: ±10 pA
• HIGH INPUT IMPEDANCE: 10¹² Ω||2.5 pF
• INTERNAL GAIN SETTING RESISTORS:
G = +2 V/V or G = –1 V/V
• HIGH OUTPUT CURRENT: 70 mA
APPLICATIONS
• TEST AND MEASUREMENT FRONT-END
• HIGH-INPUT IMPEDANCE PROBES
• DATA ACQUISITION CARDS
• OSCILLOSCOPE INPUT
• ADC INPUT AMPLIFIER
NONINVERTING GAIN OF +2 V/V
50-W TEST ENVIRONMENT
+6 V
50-W
Source
49.9 W
V_IN+
V_IN-
160 W
V_S+
OPA653
0.1 mF
10 mF
V_OUT ^{49.9 W}
50-W
Load
160 W
V_S-
-6 V
0.1 mF
10 mF
SMALL-SIGNAL FREQUENCY RESPONSE
6
3
0
-3
-6
-9
-12
-15
-18 ^{VO = 200 mVPP}
100 k
1M
10 M
100 M
1G
Frequency (Hz)
DESCRIPTION
The OPA653 combines a very wideband
voltage-feedback operational amplifier with a
JFET-input stage with internal gain setting resistors to
achieve an ultra-high, dynamic-range amplifier for
fixed gain of +2-V/V or –1-V/V applications.
The 500-MHz wide gain of +2-V/V bandwidth is
complemented by a very high 2675-V/μs slew rate
and fast settling time that make it ideal for
time-domain and pulse-oriented applications.
Excellent –72-dBc THD distortion performance at
10 MHz makes the OPA653 an excellent choice for
frequency-domain and FFT analysis applications.
Additionally, with the low 6.1-nV/√Hz voltage noise,
low bias current, and high impedance JFET input, it
supports very low noise, wideband, high input
impedance applications. Examples include
high-impedance probes, data acquisition cards, and
oscilloscope front-ends.
RELATED
OPERATIONAL AMPLIFIER
PRODUCTS
DEVICE
OPA356
V_S (V)
+5
OPA656 ±5
OPA657 ±5
OPA659 ±6
THS4631 ±15
BW
(MHz)
200
500
350
650
105
SLEW
RATE
(V/μs)
300
290
700
2550
900
VOLTAGE
NOISE
(nV/√Hz)
5.80
7
4.8
8.9
7
AMPLIFIER
DESCRIPTION
Unity-Gain
Stable CMOS
Unity-Gain
Stable
JFET-Input
Gain of +7
Stable
JFET-Input
Unity-Gain
Stable
JFET-Input
Unity-Gain
Stable
JFET-Input
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008–2009, Texas Instruments Incorporated