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PDF ADA4853-2 Data sheet ( Hoja de datos )
| Número de pieza | ADA4853-2 | |
| Descripción | (ADA4853-x) Video Op Amp | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Low Power, Rail-to-Rail Output,
Video Op Amp with Ultralow Power Disable
ADA4853-1/ADA4853-2/ADA4853-3
FEATURES
Ultralow power-down current: 0.1 μA
Low quiescent current: 1.4 mA/amplifier
Ideal for standard definition video
High speed
100 MHz, −3 dB bandwidth
120 V/μs slew rate
0.5 dB flatness: 22 MHz
Differential gain: 0.20%
Differential phase: 0.10°
Single-supply operation
Rail-to-rail output
Output swings to within 200 mV of either rail
Low voltage offset: 1 mV
Wide supply range: 2.65 V to 5 V
APPLICATIONS
Portable multimedia players
Video cameras
Digital still cameras
Consumer video
GENERAL DESCRIPTION
The ADA4853-1/ADA4853-2/ADA4853-3 are low power, low
cost, high speed, rail-to-rail output op amps with ultralow
power disable that are ideal for portable consumer electronics.
Despite their low price, the ADA4853-1/ADA4853-2/ADA4853-3
provide excellent overall performance and versatility. The
100 MHz, −3 dB bandwidth and 120 V/μs slew rate make these
amplifiers well-suited for many general-purpose, high speed
applications.
The ADA4853-1/ADA4853-2/ADA4853-3 voltage feedback op
amps are designed to operate at supply voltages as low as 2.65 V
and up to 5 V using only 1.4 mA of supply current per amplifier.
To further reduce power consumption, the amplifiers are equipped
with a power-down mode that lowers the supply current to less
than 1.5 μA maximum, making them ideal in battery-powered
applications.
The ADA4853-1/ADA4853-2/ADA4853-3 provide users with a
true single-supply capability, allowing input signals to extend
200 mV below the negative rail and to within 1.2 V of the
positive rail. On the output, the amplifiers can swing within
200 mV of either supply rail.
Rev. B
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.
PIN CONFIGURATIONS
VOUT 1 ADA4853-1 6 +VS
–VS 2
5 POWER DOWN
+IN 3
4 –IN
TOP VIEW
(Not to Scale)
Figure 1. 6-Lead SC70
ADA4853-3
DISABLE 1 1
DISABLE 2 2
DISABLE 3 3
+VS 4
+–
–+
+
–
12 –VS
11 +IN
10 –IN
9 VOUT
VOUT1 1
–IN1 2
+IN1 3
–VS 4
ADA4853-2
–
+–
+
12 +VS
11 VOUT2
10 –IN2
9 +IN2
NC = NO CONNECT
Figure 2. 16-Lead LFCSP_VQ
DISABLE 1 1
14 VOUT
DISABLE 2 2
+ – 13 –IN
DISABLE 3 3
12 +IN
+VS 4 ADA4853-3 11 –VS
+IN 5
10 +IN
–IN 6 – + + – 9 –IN
VOUT 7
8 VOUT
Figure 3. 16-Lead LFCSP_VQ
Figure 4. 16-Lead TSSOP
With their combination of low price, excellent differential gain
(0.2%), differential phase (0.10°), and 0.5 dB flatness out to
22 MHz, these amplifiers are ideal for video applications.
The ADA4853-1 is available in a 6-lead SC70, the ADA4853-2 is
available in a 16-lead LFCSP_VQ, and the ADA4853-3 is available
in both a 16-lead LFCSP_VQ and a 14-lead TSSOP. The
ADA4853-1 temperature range is −40°C to +85°C, while the
ADA4853-2/ADA4853-3 temperature range is −40°C to +105°C.
6.5
6.4
VS = 5V
RL = 150Ω
G = +2
6.3
0.1V p-p
6.2
6.1
6.0 2.0V p-p
5.9
5.8
5.7
5.6
5.5
0.1
1
FREQUENCY (MHz)
10
Figure 5. 0.5 dB Flatness Frequency Response
40
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
©2006 Analog Devices, Inc. All rights reserved.
1 page  
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ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Power Dissipation
Common-Mode Input Voltage
Differential Input Voltage
Storage Temperature Range
Operating Temperature Range
6-Lead SC70
16-Lead LFCSP_VQ
14-Lead TSSOP
Lead Temperature
Junction Temperature
Rating
5.5 V
See Figure 6
−VS − 0.2 V to +VS − 1.2 V
±VS
−65°C to +125°C
−40°C to +85°C
−40°C to +105°C
−40°C to +105°C
JEDEC J-STD-20
150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, θJA is
specified for the device soldered in the circuit board for surface-
mount packages.
Table 4.
Package Type
6-Lead SC70
16-Lead LFCSP_VQ
14-Lead TSSOP
θJA Unit
430 °C/W
63 °C/W
120 °C/W
Maximum Power Dissipation
The maximum safe power dissipation for the ADA4853-1/
ADA4853-2/ADA4853-3 is limited by the associated rise in
junction temperature (TJ) on the die. At approximately 150°C,
which is the glass transition temperature, the plastic changes its
properties. Even temporarily exceeding this temperature limit
can change the stresses that the package exerts on the die,
permanently shifting the parametric performance of the
amplifiers. Exceeding a junction temperature of 150°C for an
extended period can result in changes in silicon devices,
potentially causing degradation or loss of functionality.
ADA4853-1/ADA4853-2/ADA4853-3
The power dissipated in the package (PD) for a sine wave and a
resistor load is the total power consumed from the supply
minus the load power.
PD = Total Power Consumed − Load Power
( )PD = VSUPPLY VOLTAGE × ISUPPLY CURRENT
– VOUT 2
RL
RMS output voltages should be considered.
Airflow increases heat dissipation, effectively reducing θJA.
In addition, more metal directly in contact with the package
leads and through holes under the device reduces θJA.
Figure 6 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the 6-lead SC70
(430°C/W), the 14-lead TSSOP (120°C/W), and the 16-lead
LFCSP_VQ (63°C/W) on a JEDEC standard 4-layer board. θJA
values are approximations.
3.0
2.5
2.0
1.5
TSSOP
1.0
LFCSP
0.5
0
–55
SC70
–35 –15
5
25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
Figure 6. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
ESD CAUTION
Rev. B | Page 5 of 16
5 Page 
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–0.6
VS = 5V
–0.8
–1.0
–1.2
–1.4
–1.6
–1.8
–2.0
–1.0 –0.5 0
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VCM (V)
Figure 37. VOS vs. Common-Mode Voltage
1.5
VS = 5V, T = +85°C
VS = 5V, T = –40°C
VS = 5V, T = +25°C
1.0
VS = 3V, T = –40°C
VS = 3V, T = +25°C
VS = 3V, T = +85°C
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
POWER DOWN VOLTAGE (V)
Figure 38. Supply Current vs. POWER DOWN Voltage
–0.6
VS = 5V
–0.7
VS = 3V
–0.8
–0.9
–1.0
–50
–25
0 25 50
TEMPERATURE (°C)
75
Figure 39. Input Offset Voltage vs. Temperature
100
ADA4853-1/ADA4853-2/ADA4853-3
–0.50
–0.52
–0.54
–0.56
VS = 5V
–0.58
–0.60
–0.62
VS = 3V
+IB
–0.64
–0.66
–IB
–0.68
–40
–20
0 20 40
TEMPERATURE (°C)
60
Figure 40. Input Bias Current vs. Temperature
80
3.0
VS = 3V
2.8 POSITIVE SWING
2.6
LOAD RESISTANCE TIED
TO MIDSUPPLY
2.4
0.6
0.4
0.2
NEGATIVE SWING
0
1 10 100 1k
LOAD RESISTANCE (Ω)
Figure 41. Output Voltage vs. Load Resistance
10k
5.0
VS = 5V
4.8 POSITIVE SWING
4.6
LOAD RESISTANCE TIED
TO MIDSUPPLY
4.4
0.6
0.4
0.2
0
10
NEGATIVE SWING
100 1k
LOAD RESISTANCE (Ω)
Figure 42. Output Voltage vs. Load Resistance
10k
Rev. B | Page 11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ADA4853-2.PDF ] | |
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