Datenblatt-pdf.com


ADA4862-3 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADA4862-3
Beschreibung Triple Op Amp
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 16 Seiten
ADA4862-3 Datasheet, Funktion
www.DataSheet4U.com
FEATURES
Ideal for RGB/HD/SD video
Supports 1080i/720p resolution
High speed
−3 dB bandwidth: 300 MHz
Slew rate: 750 V/μs
Settling time: 9 ns ( 0.5%)
0.1 dB flatness: 65 MHz
Differential gain: 0.02%
Differential phase: 0.03°
Wide supply range: 5 V to 12 V
Low power: 5.3 mA/amp
Low voltage offset (RTO): 3.5 mV (typ)
High output current: 25 mA
Also configurable for gains of +1, −1
Power-down
APPLICATIONS
Consumer video
Professional video
Filter buffers
GENERAL DESCRIPTION
The ADA4862-3 (triple) is a low cost, high speed, internally
fixed, G = +2 op amp, which provides excellent overall
performance for high definition and RGB video applications.
The 300 MHz, G = +2, −3 dB bandwidth, and 750 V/μs slew
rate make this amplifier well suited for many high speed
applications. The ADA4862-3 can also be configured to
operate in gains of G = +1 and G = −1.
With its combination of low price, excellent differential gain
(0.02%), differential phase (0.03°), and 0.1 dB flatness out to
65 MHz, this amplifier is ideal for both consumer and
professional video applications.
The ADA4862-3 is designed to operate on supply voltages as
low as +5 V and up to ±5 V using only 5.3 mA/amp of supply
current. To further reduce power consumption, each amplifier
is equipped with a power-down feature that lowers the supply
current to 200 μA/amp. The ADA4862-3 also consumes less
board area because feedback and gain set resistors are on-chip.
Having the resistors on chip simplifies layout and minimizes the
required board space.
High Speed, G = +2,
Low Cost, Triple Op Amp
ADA4862-3
PIN CONFIGURATION
POWER DOWN 1 1
550Ω
14 VOUT2
POWER DOWN 2 2
POWER DOWN 3 3
550Ω 13 –IN 2
12 +IN 2
+VS 4
ADA4862-3
11 –VS
+IN 1 5
–IN 1 6
550Ω
550Ω
10 +IN 3
9 –IN 3
VOUT1 7
550Ω
550Ω
8 VOUT3
Figure 1. 14-Lead SOIC (R-14)
The ADA4862-3 is available in a 14-lead SOIC package and is
designed to work in the extended temperature range of −40°C
to +105°C.
6.1
6.0
5.9
5.8
G = +2
RL = 150Ω
5.7
CL = 4pF
VOUT = 2V p-p
5.6
VS = ±5V
VS = +5V
5.5
5.4
5.3
5.2
5.1
0.1
1 10 100
FREQUENCY (MHz)
1000
Figure 2. Large Signal 0.1 dB Bandwidth for Various Supplies
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.






ADA4862-3 Datasheet, Funktion
ADA4862-3
TYPICAL PERFORMANCE CHARACTERISTICS
8
G = +2
RL = 150Ω
7 CL = 4pF
VOUT = 0.2V p-p
6
VS = +5V
5
VS = ±5V
4
3
2
1
0
0.1 1
10 100 1000
FREQUENCY (MHz)
Figure 4. Small Signal Frequency Response for Various Supplies
8
G = +2
7
RL = 150Ω
CL = 4pF
VOUT = 2V p-p
6
VS = ±5V
5
VS = +5V
4
3
2
1
0
0.1 1
10 100 1000
FREQUENCY (MHz)
Figure 5. Large Signal Frequency Response for Various Supplies
6.1
6.0
5.9
5.8
G = +2
RL = 150Ω
5.7
CL = 4pF
VOUT = 2V p-p
5.6
5.5
5.4
5.3
5.2
5.1
0.1
1
VS = ±5V
VS = +5V
10
FREQUENCY (MHz)
100
1000
Figure 6. Large Signal 0.1 dB Bandwidth for Various Supplies
200
VS = +5V
100
VS = ±5V
0
2.7
2.6
2.5
–100
–200
G = +2
RL = 150Ω
CL = 4pF
VOUT = 0.2V p-p
TIME = 5ns/DIV
2.4
2.3
Figure 7. Small Signal Transient Response for Various Supplies
200
150
100
50
0
–50
–100
–150
–200
CL = 9pF
CL = 4pF
CL = 6pF
G = +2
RL = 150Ω
CL = 4pF
VOUT = 0.2V p-p
VS = ±5V
TIME = 5ns/DIV
Figure 8. Small Signal Transient Response for Various Capacitor Loads
2.7
CL = 9pF
CL = 6pF
2.6
CL = 4pF
2.5
G = +2
2.4 RL = 150Ω
VOUT = 0.2V p-p
VS = 5V
TIME = 5ns/DIV
2.3
Figure 9. Small Signal Transient Response for Various Capacitor Loads
Rev. A | Page 6 of 16

6 Page









ADA4862-3 pdf, datenblatt
ADA4862-3
Option 2
Another option exists for running the ADA4862-3 as a unity-
gain amplifier. In this configuration, the noise gain is 2, see
Figure 34. The frequency response and transient response for
this configuration closely match the gain of +2 plots because the
noise gains are equal. This method does have twice the noise
gain of Option 1; however, in applications that do not require
low noise, Option 2 offers less peaking and ringing. By tying the
inputs together, the net gain of the amplifier becomes 1.
Equation 1 shows the transfer characteristic for the schematic
shown in Figure 34. Frequency and transient response are
shown in Figure 35 and Figure 36.
VO
= V i ⎜⎜⎝⎛
RF
RG
⎟⎟⎠⎞ + V i ⎜⎜⎝⎛
RF + RG
RG
⎟⎟⎠⎞
(1)
which simplifies to VO = Vi.
+VS
10μF
0.01μF
RF
RG
VIN
RT
VOUT
0.01μF
10μF
–VS
GAIN OF +1
Figure 34. Unity Gain of Option 2
1
0
G = +1
–1 RL = 150Ω
–2
–3
–4
–5
–6
–7
0.1
1 10 100
FREQUENCY (MHz)
Figure 35. Frequency Response of Option 2
1000
200
G = +1
150 VS = ±5V
RL = 150Ω
TIME = 2ns/DIV
100
50
0
–50
–100
–150
–200
Figure 36. Small Signals Transient Response of Option 2
+VS
10μF
0.01μF
VIN
RT
VOUT
0.01μF
10μF
–VS
GAIN OF –1
Figure 37. Inverting Configuration (G = −1)
2.0
1.5 CL = 9pF
CL = 6pF
1.0
0.5 CL = 4pF
0
–0.5
–1.0
–1.5
G = –1
RL = 150Ω
VOUT = 2V p-p
VS = ±5V
TIME = 5ns/DIV
–2.0
Figure 38. Large Signal Transient Response for Various Capacitor Loads
Rev. A | Page 12 of 16

12 Page





SeitenGesamt 16 Seiten
PDF Download[ ADA4862-3 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ADA4862-3Triple Op AmpAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche