ANALOG DEVICES ADA4853-1, ADA4853-2, ADA4853-3 Service Manual
Low Power, Rail-to-Rail Output,
V
V
A
www.BDTIC.com/ADI
Video Op Amps with Ultralow Power
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
Clock buffer
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
disables 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.
ADA4853-1/ADA4853-2/ADA4853-3
PIN CONFIGURATIONS
NC
PD2
PD1
14
13
15NC16
ADA4853-2
1
1
OUT
2
–IN1
OUT
–V
+IN
1
2
S
3
ADA4853-1
TOP VIEW
(Not to Scale)
+V
6
S
5
POWER DOWN
–IN
4
5884-001
3
+IN1
4
–V
S
NC = NO CONNECT
–
+
5NC6
NC7NC8NC
Figure 1. 6-Lead SC70 Figure 2. 16-Lead LFCSP_VQ
DISABLE 1
DISABLE 2
DISABLE 3
+V
S
1
2
3
4
DA4853-3
S
OUT
V
+V
–IN
14
16
15
+–
7
5
6
–IN
+IN
OUT
V
+IN
13
+–
+
–
8
S
–V
DISABLE 1
DISABLE 2
DISABLE 3
12
–V
S
+IN
11
–IN
10
9
V
OUT
05884-057
V
+V
+IN
–IN
OUT
S
1
2
3
ADA4853-3
4
5
–
6
7
Figure 3. 16-Lead LFCSP_VQ Figure 4. 14-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
VS=5V
6.4
= 150Ω
R
L
G=+2
6.3
6.2
6.1
6.0
5.9
5.8
CLOSED-LOOP GAIN (dB)
5.7
5.6
5.5
0.1 1 10 40
FREQUENC Y (MHz)
Figure 5. 0.5 dB Flatness Frequency Response
2.0V p-p
–
+
+
+
+
0.1V p-p
12
+V
S
11
V
OUT
10
–IN2
9
+IN2
14
V
OUT
13
–IN
–
12
+IN
11
–V
S
10
+IN
–
9
–IN
8
V
OUT
05884-010
2
5884-056
05884-058
Rev. C
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.
Trademarks and registered trademarks are the property of their respective owners.
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 ©2006–2007 Analog Devices, Inc. All rights reserved.
ADA4853-1/ADA4853-2/ADA4853-3
www.BDTIC.com/ADI
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Specifications with 3 V Supply ................................................... 3
Specifications with 5 V Supply ................................................... 4
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution .................................................................................. 5
REVISION HISTORY
10/07—Rev. B to Rev. C
Changes to Applications Section .................................................... 1
Changes to Ordering Guide .......................................................... 16
10/06—Rev. A to7 Rev. B
Added ADA4853-3 ............................................................. Universal
Added 16-Lead LFCSP_VQ .............................................. Universal
Added 14-Lead TSSOP ...................................................... Universal
Changes to Features .......................................................................... 1
Changes to DC Performance, Input Characteristics, and Power
Supply Sections ................................................................................. 3
Changes to DC Performance, Input Characteristics, and Power
Supply Sections ................................................................................. 4
Changes to Figure 20 ........................................................................ 8
Changes to Figure 49 ...................................................................... 13
Updated Outline Dimensions ....................................................... 16
Changes to Ordering Guide .......................................................... 16
Typical Performance Characteristics ..............................................6
Circuit Description......................................................................... 14
Headroom Considerations ........................................................ 14
Overload Behavior and Recovery ............................................ 14
Applications Information .............................................................. 15
Single-Supply Video Amplifier ................................................. 15
Power Supply Bypassing ............................................................ 15
Layout .......................................................................................... 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 16
7/06—Rev. 0 to Rev. A
Added ADA4853-2 ............................................................. Universal
Changes to Features and General Description .............................. 1
Changes to Table 1 ............................................................................. 3
Changes to Table 2 ............................................................................. 4
Changes to Table 3 ............................................................................. 5
Changes to Figure 7 ........................................................................... 6
Changes to Figure 11 Caption, Figure 12, Figure 13,
and Figure 16 ...................................................................................... 7
Changes to Figure 17 and Figure 19................................................ 8
Inserted Figure 21; Renumbered Sequentially .............................. 8
Inserted Figure 25; Renumbered Sequentially .............................. 9
Changes to Figure 28 ......................................................................... 9
Changes to Figure 31 through Figure 35 ..................................... 10
Changes to Figure 37, Figure 39 through Figure 42 .................. 11
Inserted Figure 43 and Figure 46 .................................................. 12
Inserted Figure 47 ........................................................................... 13
Changes to Circuit Description Section ...................................... 13
Changes to Headroom Considerations Section ......................... 13
Changes to Figure 48 ...................................................................... 14
Updated Outline Dimensions ....................................................... 15
Changes to Ordering Guide .......................................................... 15
1/06—Revision 0: Initial Version
Rev. C | Page 2 of 16
ADA4853-1/ADA4853-2/ADA4853-3
www.BDTIC.com/ADI
SPECIFICATIONS
SPECIFICATIONS WITH 3 V SUPPLY
TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = +2, RL = 150 Ω, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth G = +1, VO = 0.1 V p-p 90 MHz
G = +2, VO = 2 V p-p 32 MHz
Bandwidth for 0.5 dB Flatness G = +2, VO = 2 V p-p, RL = 150 Ω 22 MHz
Settling Time to 0.1% VO = 2 V step 45 ns
Slew Rate G = +2, VO = 2 V step 88 100 V/μs
NOISE/DISTORTION PERFORMANCE
Differential Gain RL = 150 Ω 0.20 %
Differential Phase RL = 150 Ω 0.10 Degrees
Input Voltage Noise f = 100 kHz 22 nV/√Hz
Input Current Noise f = 100 kHz 2.2 pA/√Hz
Crosstalk G = +2, VO = 2 V p-p, RL = 150 Ω, f = 5 MHz −66 dB
DC PERFORMANCE
Input Offset Voltage 1 4 mV
Input Offset Voltage Drift 1.6 μV/°C
Input Bias Current
Input Bias Current Drift 4 nA/°C
Input Bias Offset Current 50 nA
Open-Loop Gain VO = 0.5 V to 2.5 V 72 80 dB
INPUT CHARACTERISTICS
Input Resistance Differential/common mode 0.5/20 MΩ
Input Capacitance 0.6 pF
Input Common-Mode Voltage Range −0.2 to +VCC − 1.2 V
Input Overdrive Recovery Time (Rise/Fall) VIN = −0.5 V to +3.5 V, G = +1 40 ns
Common-Mode Rejection Ratio VCM = 0 V to 1 V −69 −85 dB
POWER-DOWN
Power-Down Input Voltage Power-down 1.2 V
Turn-Off Time 1.4 μs
Turn-On Time 120 ns
Power-Down Bias Current
Enabled Power-down = 3.0 V 25 30 μA
Power-Down Power-down = 0 V 0.01 μA
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time VIN = −0.25 V to +1.75 V, G = +2 70 ns
Output Voltage Swing RL = 150 Ω 0.3 to 2.7 0.15 to 2.88 V
Short-Circuit Current Sinking/sourcing 150/120 mA
POWER SUPPLY
Operating Range 2.65 5 V
Quiescent Current/Amplifier 1.3 1.6 mA
Quiescent Current (Power-Down)/Amplifier Power-down = low 0.1 1.5 μA
Positive Power Supply Rejection +VS = +1.5 V to +2.5 V, −VS = −1.5 V −76 −86 dB
Negative Power Supply Rejection −VS = −1.5 V to −2.5 V, +VS = +1.5 V −77 −88 dB
1.0 1.7 μA
Rev. C | Page 3 of 16
ADA4853-1/ADA4853-2/ADA4853-3
www.BDTIC.com/ADI
SPECIFICATIONS WITH 5 V SUPPLY
TA = 25°C, RF = 1 kΩ, RG = 1 kΩ for G = +2, RL = 150 Ω, unless otherwise noted.
Table 2.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth G = +1, VO = 0.1 V p-p 100 MHz
G = +2, VO = 2 V p-p 35 MHz
Bandwidth for 0.5 dB Flatness G = +2, VO = 2 V p-p 22 MHz
Settling Time to 0.1% VO = 2 V step 54 ns
Slew Rate G = +2, VO = 2 V step 93 120 V/μs
NOISE/DISTORTION PERFORMANCE
Differential Gain RL = 150 Ω 0.22 %
Differential Phase RL = 150 Ω 0.10 Degrees
Input Voltage Noise f = 100 kHz 22 nV/√Hz
Input Current Noise f = 100 kHz 2.2 pA/√Hz
Crosstalk G = +2, VO = 2 V p-p, RL = 150 Ω, f = 5 MHz −66 dB
DC PERFORMANCE
Input Offset Voltage 1 4.1 mV
Input Offset Voltage Drift 1.6 μV/°C
Input Bias Current
Input Bias Current Drift 4 nA/°C
Input Bias Offset Current 60 nA
Open-Loop Gain VO = 0.5 V to 4.5 V 72 80 dB
INPUT CHARACTERISTICS
Input Resistance Differential/common mode 0.5/20 MΩ
Input Capacitance 0.6 pF
Input Common-Mode Voltage Range −0.2 to +VCC − 1.2 V
Input Overdrive Recovery Time (Rise/Fall) VIN = −0.5 V to +5.5 V, G = +1 40 ns
Common-Mode Rejection Ratio VCM = 0 V to 3 V −71 −88 dB
POWER-DOWN
Power-Down Input Voltage Power-down 1.2 V
Turn-Off Time 1.5 μs
Turn-On Time 120 ns
Power-Down Bias Current
Enabled Power-down = 5 V 40 50 μA
Power-Down Power-down = 0 V 0.01 μA
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time VIN = −0.25 V to +2.75 V, G = +2 55 ns
Output Voltage Swing RL = 75 Ω 0.55 to 4.5 0.1 to 4.8 V
Short-Circuit Current Sinking/sourcing 160/120 mA
POWER SUPPLY
Operating Range 2.65 5 V
Quiescent Current/Amplifier 1.4 1.8 mA
Quiescent Current (Power-Down)/Amplifier Power-down = low 0.1 1.5 μA
Positive Power Supply Rejection +VS = +2.5 V to +3.5 V, −VS = −2.5 V −75 −80 dB
Negative Power Supply Rejection −VS = −2.5 V to −3.5 V, +VS = +2.5 V −75 −80 dB
1.0 1.7 μA
Rev. C | Page 4 of 16
ADA4853-1/ADA4853-2/ADA4853-3
(
www.BDTIC.com/ADI
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Supply Voltage 5.5 V
Power Dissipation See Figure 6
Common-Mode Input Voltage −VS − 0.2 V to +VS − 1.2 V
Differential Input Voltage ±VS
Storage Temperature Range −65°C to +125°C
Operating Temperature Range
6-Lead SC70 −40°C to +85°C
16-Lead LFCSP_VQ −40°C to +105°C
14-Lead TSSOP −40°C to +105°C
Lead Temperature JEDEC J-STD-20
Junction Temperature 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.
The power dissipated in the package (P
resistor load is the total power consumed from the supply
minus the load power.
= Total Power Consumed − Load Power
P
D
D
IVP
RMS output voltages should be considered.
Airflow increases heat dissipation, effectively reducing θ
In addition, more metal directly in contact with the package
leads and through holes under the device reduces θ
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. θ
values are approximations.
3.0
2.5
2.0
LFCSP
1.5
TSSOP
1.0
) for a sine wave and a
D
V
OUT
)
CURRENTSUPPLYVOLTAGESUPPLY
–×=
R
L
2
.
JA
.
JA
JA
Table 4.
Package Type θJA Unit
6-Lead SC70 430 °C/W
16-Lead LFCSP_VQ 63 °C/W
14-Lead TSSOP 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 (T
) on the die. At approximately 150°C,
J
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.
0.5
MAXIMUM POW ER DISSIPAT ION (W)
0
Figure 6. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
SC70
125105856545255–15–35–55
AMBIENT TEM PERATURE (°C)
ESD CAUTION
05884-059
Rev. C | Page 5 of 16
Loading...