OPA4820 Datasheet, PDF (1/35 Pages) Texas Instruments – Quad, Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier

OPA4820
SBOS317D − SEPTEMBER 2004 − REVISED AUGUST 2008
Quad, Unity-Gain Stable, Low-Noise,
Voltage-Feedback Operational Amplifier
FEATURES
DESCRIPTION
D HIGH BANDWIDTH: 220MHz (G = +2)
D HIGH OUTPUT CURRENT: ±85mA
D LOW INPUT NOISE: 2.5nV/√Hz
D LOW SUPPLY CURRENT: 5.7mA/ch
D FLEXIBLE SUPPLY VOLTAGE:
±2V to ±6.3V Dual Supply
+4V to +12.6V Single Supply
D EXCELLENT DC ACCURACY:
Maximum 25°C Input Offset Voltage = 0.8mV
Maximum 25°C Input Offset Current = 500nA
The OPA4820 provides a wideband, unity-gain stable,
voltage-feedback amplifier with a very low input noise
voltage and high output current using a low 5.7mA/ch
supply current. At unity-gain, the OPA4820 gives
> 600MHz bandwidth with < 1 dB peaking. The OPA4820
complements this high-speed operation with excellent DC
precision in a low-power device. A worst-case input offset
voltage of ±0.8mV and an offset current of ±500nA give
excellent absolute DC precision for pulse amplifier
applications.
Minimal input and output voltage swing headroom allow
the OPA4820 to operate on a single +5V supply with
APPLICATIONS
D LOW-COST VIDEO LINE DRIVERS
D ADC PREAMPS
> 2V_PP output swing. While not a rail-to-rail (RR) output,
this swing will support most emerging analog-to-digital
converter (ADC) input ranges with lower power and noise
than typical RR output op amps.
D ACTIVE FILTERS
D LOW-NOISE INTEGRATORS
D PORTABLE TEST EQUIPMENT
D OPTICAL CHANNEL AMPLIFIERS
D LOW-POWER, BASEBAND AMPLIFIERS
Exceptionally low dG/dP (0.01%/0.03°) supports low-cost
composite video line driver applications. Existing designs
can use the industry-standard quad pinout SO-14 package
while emerging high-density portable applications can use
the TSSOP-14.
D CCD IMAGING CHANNEL AMPLIFIERS
RELATED PRODUCTS
D OPA4650 UPGRADE
+12V
10kΩ
1/4
OPA4820
SINGLES
OPA354
OPA690
—
—
OPA820
DUALS
OPA2354
OPA2690
OPA2652
OPA2822
—
TRIPLES
—
OPA3690
—
—
—
QUADS
OPA4354
—
—
—
—
FEATURES
CMOS RR Output
High Slew Rate
SOT23-8
Low-Noise
Single Channel
402Ω
50Ω
1:1
Transmit
Filter
2V_PP
+6V
VCM
133Ω
14VPP
402Ω
50Ω
100Ω 10dBm
Line 3.5 Crest Factor
10kΩ
1/4
OPA4820
AFE
800Ω
VCM
1/4
OPA4820
800Ω
402Ω
402Ω
Receiver
Filter
402Ω
402Ω
1/4
OPA4820
V_CM
Low-Noise Transceiver Interface
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PRODUCTION DATA information is current as of publication date. Products
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