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: [phone] www.analog.com
Fax: [phone] ©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

ADA4853-1/ADA4853-2/ADA4853-3

www.BDTIC.com/ADI

TYPICAL PERFORMANCE CHARACTERISTICS

2

1

0

–1

–2

–3

*ADA4853-1/ADA4853-2

–4

VS = 5V

–5

NORMALIZED CLOSED-LOOP GAIN (dB)

= 150Ω

R

L

V

= 0.1V p-p

OUT

–6

0.1 200

110100

ADA4853-3

LFCSP

G = +2*

G = +10*

FREQUENCY (MHz )

Figure 7. Small Signal Frequency Response for Various Gains

3

VS = 5V
G = +1

2

V

= 0.1V p-p

OUT

1

0

–1

–2

–3

CLOSED-LOOP GAIN (dB)

–4

–5

–6

0.1 1 10 100 200
FREQUENCY (MHz)

R

= 75Ω

L

R

R

L

= 1kΩ

L

= 150Ω

G = –1*

5

VS = 5V
R

= 150Ω

4

L

V

= 0.1V p-p

OUT

3

G = +1

2

1

0

–1

–2

–3

CLOSED-LOOP GAIN (dB)

–4

–5

–6

0.1 1 10 100 200

5884-006

R

SNUB

C

L

R

L

FREQUENCY (MHz)

CL = 10pF/25Ω SNUB

= 10pF

C

L

= 5pF

C

L

C

= 0pF

L

05884-009

Figure 10. Small Signal Frequency Response for Various Capacitive Loads

6.5
VS=5V
R

=150Ω

6.4

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

5884-007

0.1 1 10 40
FREQUENCY (MHz )

2.0V p-p

0.1V p-p

05884-010

Figure 8. Small Signal Frequency Response for Various Loads

4

G = +1

3

R

= 150Ω

L

V

= 0.1V p-p

OUT

2

1

0

–1

–2

–3

CLOSED-LOOP GAIN (dB)

–4

–5

–6

0.1 1 10 100 200
FREQUENCY (MHz)

V

S

= 5V

V

S

Figure 9. Small Signal Frequency Response for Various Supplies

= 3V

05884-008

Figure 12. ADA4853-3 LFCSP_VQ Flatness Response for Various Output Voltages

Rev. C | Page 6 of 16

Figure 11. 0.5 dB Flatness Response for Various Output Voltages

8.0
VS = 5V

7.8

R

= 150Ω

L

G = +2

7.6

7.4

7.2

7.0

6.8

6.6

6.4

6.2

CLOSED-LOOP GAIN (dB)

6.0

5.8

5.6

0.1 1000

110100

FREQUENCY (MHz )

0.1V p-p

2V p-p

05884-060

ADA4853-1/ADA4853-2/ADA4853-3

T
V

www.BDTIC.com/ADI

1

0

= 150Ω

= 2V p-p

G=+10

–1

–2

–3

–4

VS = 5V

–5

NORMALIZED CLOSED-LOOP GAIN (dB)

R

L

V

OUT

–6

0.1 1 10 100 200

G=–1

G=+2

FREQUENCY (MHz)

Figure 13. Large Signal Frequency Response for Various Gains

7

6

5

4

3

2

CLOSED-LOOP GAIN (dB)

VS=5V

1

=2Vp-p

V

OUT

G=+2

0

0.1 200

110100

RL=75Ω

RL=150Ω

FREQUENCY (MHz)

RL=1kΩ

Figure 14. Large Signal Frequency Response for Various Loads

5

V

= 3V

S

= 150Ω

R

4

L

= 0.1V p-p

V

OUT

G = +1

3

2

1

0

–1

–2

–3

CLOSED-LOOP GAIN (dB)

–4

–5

–6

0.1 1 10 100 200
FREQUENCY (MHz)

+25°C

+85°C

–40°C

Figure 15. Small Signal Frequency Response for Various Temperatures

4

VS = 5V
R

= 150Ω

L

3

V

= 0.1V p-p

OUT

G = +1

2

1

0

–1

–2

–3

CLOSED-LOOP GAIN (dB)

–4

–5

–6

05884-011

0.1 1 10 100 200
FREQUENCY (MHz)

+25°C

–40°C

+85°C

05884-014

Figure 16. Small Signal Frequency Response for Various Temperatures

250

VS=5V

= 150Ω

R

L

G=+2

200

/µs)

150

E(

100

SLEW RA

50

0

5884-012

0 0.5 1.5 2.5 3.51.0 2.0 3.0 4.0

NEGATIVE SLEW RAT E

POSITIVE SLEW RATE

OUTPUT VOLTAGE STEP (V)

5884-015

Figure 17. Slew Rate vs. Output Voltage

= 150Ω

0

–30

–60

–90

–120

–150

–180

–210

–240

5884-029

OPEN-LO OP PHASE (Degrees)

140

120

100

80

60

40

OPEN-LOOP GAIN (dB)

20

0

–20

05884-013

100

1k 10k 100k 1M 10M 100M

FREQUENCY ( Hz)

PHASE

GAIN

VS=5V
R

L

Figure 18. Open-Loop Gain and Phase vs. Frequency

Rev. C | Page 7 of 16

ADA4853-1/ADA4853-2/ADA4853-3

–

–

R

–

R

www.BDTIC.com/ADI

20

VS = 5V

–30

–40

–50

–60

–70

COMMON-MO DE REJECTIO N (dB)

–80

–90

100 1k 10k 100k 1M 10M 100M

FREQUENCY (Hz)

Figure 19. Common-Mode Rejection vs. Frequency

0

VS = 5V
GAIN = +2

–10

RTO

–20

–30

–40

–50

–60

–70

–80

POWER SUPPLY REJECTI ON (dB)

–90

–100

100 1k 10k 100k 1M 10M 100M

FREQUENCY (Hz)

–PSR

+PSR

Figure 20. Power Supply Rejection vs. Frequency

1000

VS = 5V
G = +1

100

05884-030

05884-031

10M

VS = 5V
G = +1

1M

100k

10k

1k

100

CLOSED-LOOP OUTPUT IMPEDANCE (Ω)

10

100 1k 10k 100k 1M 10M 100M

ADA4853-3

FREQUENCY (Hz)

ADA4853-1/
ADA4853-2

Figure 22. Output Impedance vs. Frequency Disabled

40

G = +2
V

= 3V

S

V

= 2V p-p

OUT

–50

= 150Ω HD3

R

–60

–70

–80

MONIC DISTORTION (dBc)

–90

HA

–100

–110

0.1 1 10

L

FREQUENCY (MHz )

= 150Ω HD2

R

L

R

= 1kΩ HD2

L

Figure 23. Harmonic Distortion vs. Frequency

40

G = +2
V

= 5V

–50

–60

V

S
OUT

= 2V p-p

= 150Ω HD3

R

L

R

= 1kΩ HD3

L

05884-050

05884-016

10

1

0.1

CLOSED-LO OP OUTP UT IMPEDANCE (Ω)

0.01
100 1k 10k 100k 1M 10M 100M

FREQUENCY (Hz)

05884-032

Figure 21. Output Impedance vs. Frequency Enabled

Rev. C | Page 8 of 16

–70

–80

–90

MONIC DISTORTION (dBc)

–100

HA

–110

–120

0.1 1 10

R

= 150Ω HD2

L

FREQUENCY (MHz)

= 1kΩ HD2

R

L

R

Figure 24. Harmonic Distortion vs. Frequency

= 1kΩ HD3

L

05884-017

ADA4853-1/ADA4853-2/ADA4853-3

–

R

–

–

R

www.BDTIC.com/ADI

40

G = +1
V

= 5V

S

V

= 2V p-p

OUT

R

= 75Ω HD2

L

= 75Ω HD3

R

L

0.1 1 10

= 150Ω HD3

R

L

R

= 150Ω HD2

L

1kΩ HD2

=

R

L

FREQUENCY (MHz)

= 1kΩ HD3

R

L

MONICDISTORTION(dBc)

HA

–50

–60

–70

–80

–90

–100

–110

–120

Figure 25. Harmonic Distortion vs. Frequency

30

G=+2
V

=2Vp-p

OUT

R

=75Ω

L

–40

–50

–60

–70

–80

HARMONIC DISTORTION (dBc)

–90

–100

VS=3VHD2

0.1 10

VS= 3V HD3

VS=5VHD2

VS=5VHD3

1

FREQUENCY (MHz)

Figure 26. Harmonic Distortion vs. Frequency

40

G = +1
V

= 5V

S

R

= 150Ω

–50

L

f = 100kHz

–60

–70

–80

–90

MONIC DIS TORTIO N (dBc)

–100

HA

–110

–120

HD2

HD3

0123

2V

(V p-p)

V

OUT

5V

GND

Figure 27. Harmonic Distortion for Various Output Voltages

5884-018

05884-051

05884-019

4

2.60
G = +2

= 150Ω

R

2.58

L

25ns/DIV

2.56

2.54

2.52

2.50

2.48

2.46

OUTPUT VO LTAGE (V )

2.44

2.42

2.40

= 3V

V

S

V

= 5V

S

Figure 28. Small Signal Pulse Response for Various Supplies

2.60

2.58

2.56

2.54

2.52

2.50

2.48

2.46

OUTPUT VOLTAGE (V)

2.44

VS=5V
R

= 150Ω

2.42

L

25ns/DIV

2.40

G=+1;CL=5pF

G=+2;CL= 0pF, 5pF, 10pF

Figure 29. Small Signal Pulse Response for Various Capacitive Loads

3.75
G = +2

R

= 150Ω

3.50

L

25ns/DIV

3.25

3.00

2.75

2.50

2.25

2.00

OUTPUT VO LTAGE (V )

1.75

1.50

1.25

V

= 3V, 5V

S

Figure 30. Large Signal Pulse Response for Various Supplies

05884-033

05884-034

05884-035

Rev. C | Page 9 of 16

ADA4853-1/ADA4853-2/ADA4853-3

www.BDTIC.com/ADI

3.75
G = +2

V

= 5V

3.50

S

R

= 150Ω

L

25ns/DIV

3.25

3.00

2.75

2.50

2.25

2.00

OUTPUT VO LTAGE (V )

1.75

1.50

1.25

= 0pF, 20p F

C

L

Figure 31. Large Signal Pulse Response for Various Capacitive Loads

5.5

4.5

3.5

2×INPUT

OUTPUT

VS=5V
G=+2
R

=150Ω

L

f=1MHz

05884-036

1000

100

VOLTAGE NOISE (nV/ Hz)

10

10 100 1k 1 0k 100k 1M 10M

FREQUENCY ( Hz)

Figure 34. Voltage Noise vs. Frequency

100

05884-037

2.5

1.5

INPUT AND OUTP UT VOLT AGE (V)

0.5

–0.5

100ns/DIV

05884-020

Figure 32. Output Overdrive Recovery

5.5

4.5

OUTPUT

3.5

2.5

1.5

INPUT AND OUTP UT VOLT AGE (V)

0.5

–0.5

INPUT

100ns/DIV

VS=5V
G=+1
R

= 150Ω

L

f=1MHz

05884-021

Figure 33. Input Overdrive Recovery

10

CURRENT NOISE (pA/ Hz)

1

10 100 1k 10k 100k 1M 10M

FREQUENCY ( Hz)

Figure 35. Current Noise vs. Frequency

20

VS = 5V

18

N = 155
x = –0.370mV

16

σ = 0.782

14

12

10

COUNT

8

6

4

2

0

–4 4321–1–3 0–2

VOS (mV)

Figure 36. VOS Distribution

05884-038

05884-042

Rev. C | Page 10 of 16

ADA4853-1/ADA4853-2/ADA4853-3

–

–

–

www.BDTIC.com/ADI

0.6

VS = 5V

–0.8

–1.0

–1.2

(mV)

OS

–1.4

V

–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

Figure 37. V

VCM (V)

vs. Common-Mode Voltage

OS

1.5

1.0

= 3V, T = +25°C

V

S

=3V,T=+85°C

V

S

VS=5V,T=+85°C

VS= 5V, T = –40° C

VS= 5V, T = +25°C

VS= 3V, T = –40° C

5884-022

0.50

–0.52

INPUT BIAS CURRENT (µA)

–0.54

–0.56

–0.58

–0.60

–0.62

–0.64

–0.66

–0.68

VS=5V

+I

B

VS=3V

–I

B

–40–200 20406080

TEMPERATURE (°C)

Figure 40. Input Bias Current vs. Temperature

3.0
VS=3V

2.8

2.6

2.4

0.6

POSITIVE SWING

LOAD RESI STANCE TI ED
TO MIDSUPPLY

05884-027

0.5

SUPPLY CURRENT (mA)

0

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

Figure 38. Supply Current vs.

POWER DOWN VOLTAGE (V)

POWER DOWN

0.6

–0.7

–0.8

–0.9

INPUT OFFSET VOLTAGE (mV)

–1.0

–50 –25 0 25 50 75 100

TEMPERATURE (° C)

VS = 5V

V

= 3V

S

Figure 39. Input Offset Voltage vs. Temperature

Voltage

0.4

OUTPUT VOLTAGE (V)

0.2

05884-023

0

1

NEGATIVE SWING

10 100 1k 10k

LOAD RESI STANCE (Ω)

05884-039

Figure 41. Output Voltage vs. Load Resistance

5.0
=5V

V

S

POSITIVE SWING

4.8

4.6

4.4

0.6

0.4

OUTPUT VOLTAGE (V)

0.2

05884-026

NEGATIVE SWING

0

10 100 10k1k

LOAD RESISTANCE (Ω)

LOAD RESI STANCE TI ED
TO MIDSUPPLY

05884-040

Figure 42. Output Voltage vs. Load Resistance

Rev. C | Page 11 of 16

ADA4853-1/ADA4853-2/ADA4853-3

www.BDTIC.com/ADI

3.0

2.9

2.8

2.7

2.6

2.5

0.5

0.4

0.3

OUTPUT VO LTAGE (V )

0.2

0.1

0

POSITIVE SWING

NEGATIVE SWING

050

5 1015202530354045

LOAD CURRENT (mA)

VS=3V

05884-041

Figure 43. Output Voltage vs. Load Current

5.0

4.9

4.8

4.7

4.6

4.5

0.5

0.4

0.3

OUTPUT VO LTAGE (V )

0.2

0.1

0

POSITIVE SWING

NEGATIVE SWING

050

5 1015202530354045

LOAD CURRENT (mA)

VS=5V

05884-052

Figure 44. Output Voltage vs. Load Current

0.25
RL= 150Ω

+V

0.20

0.15

0.10

0.05

OUTPUT SAT URATION VO LTAGE (V)

0

–40 –20 0 20 40 60 80

VS=5V

V

=3V

S

TEMPERATURE (°C)

SAT

–V

SAT

05884-053

Figure 45. Output Saturation Voltage vs. Temperature for Various Supplies

3.0

VS=5V

3.1
R

=150Ω

L

2.9

2V

2.8

INPUT

2.7

2.6

2.5

2.4

VOLTAGE (V)

2.3

2.2

2.1

2.0

1.9

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

V

OUTPUT

TIME (ns)

2V

INPUT –VOUTPUT

+0.001
(+0.1%)

–0.001
(–0.1%)

Figure 46. 0.1% Settling Time

(V)

OUTPUT

V

INPUT –

2V

05884-045

Rev. C | Page 12 of 16

ADA4853-1/ADA4853-2/ADA4853-3

–

www.BDTIC.com/ADI

6

POWER DOW N

5

4

V

OUT

= 5V

S

= 100kHz

ADA4853-1/
ADA4853-2

TIME (µs)

3

2

1

POWER DOW N PIN VOLT AGE (V)

0

–1

012345678910

G = +2
V
f

IN

ADA4853-3

Figure 47. Enable/Disable Time

40

VS = 5V
G = +2
R

= 150Ω

L

–50

V

= 2V p-p

OUT

–60

–70

CROSST ALK (d B)

–80

V

2 TO V

OUT

ADA4853-2

OUT

1

V

1 TO V

OUT

ADA4853-2

V

OUT

OUT

3

2

1

OUTPUT VOLTAGE (V)

0

05884-046

2

0

VS = 5V
R

= 150Ω

L

V

= 1V p-p

IN

G = +2

–20

–40

–60

–80

INPUT-TO-OUTPUT ISOLATION (dB)

–100

0.1 200

110100

FREQUENCY (MHz )

Figure 49. Input-to-Output Isolation, Chip Disabled

05884-055

–90

–100

100k 200M

Figure 48. Crosstalk vs. Frequency

ADA4853-3

ALL HOSTILE

1M 10M 100M

FREQUENCY (Hz)

5884-054

Rev. C | Page 13 of 16

ADA4853-1/ADA4853-2/ADA4853-3

–

www.BDTIC.com/ADI

CIRCUIT DESCRIPTION

The ADA4853-1/ADA4853-2/ADA4853-3 feature a high slew
rate input stage that is a true single-supply topology capable of
sensing signals at or below the minus supply rail. The rail-to­rail output stage can pull within 100 mV of either supply rail
when driving light loads and within 200 mV when driving
150 Ω. High speed performance is maintained at supply
voltages as low as 2.65 V.

HEADROOM CONSIDERATIONS

The ADA4853-1/ADA4853-2/ADA4853-3 are designed for use
in low voltage systems. To obtain optimum performance, it is
useful to understand the behavior of the amplifiers as input and
output signals approach their headroom limits. The amplifiers’
input common-mode voltage range extends from the negative
supply voltage (actually 200 mV below this) to within 1.2 V of
the positive supply voltage.

Exceeding the headroom limits is not a concern for any
inverting gain on any supply voltage, as long as the reference
voltage at the amplifiers’ positive input lies within the
amplifiers’ input common-mode range.

The input stage is the headroom limit for signals approaching
the positive rail. Figure 50 shows a typical offset voltage vs. the
input common-mode voltage for the ADA4853-1/ADA4853-2/
ADA4853-3 on a 5 V supply. Accurate dc performance is
maintained from approximately 200 mV below the negative
supply to within 1.2 V of the positive supply. For high speed
signals, however, there are other considerations. As the
common-mode voltage gets within 1.2 V of positive supply, the
amplifier responds well but the bandwidth begins to drop as the
common-mode voltage approaches the positive supply. This can
manifest itself in increased distortion or settling time. Higher
frequency signals require more headroom than the lower
frequencies to maintain distortion performance.

0.6

VS = 5V

–0.8

For signals approaching the negative supply, inverting gain, and
high positive gain configurations, the headroom limit is the
output stage. The ADA4853-1/ADA4853-2/ADA4853-3 use a
common-emitter output stage. This output stage maximizes the
available output range, limited by the saturation voltage of the
output transistors. The saturation voltage increases with the
drive current that the output transistor is required to supply due
to the output transistor’s collector resistance.

As the saturation point of the output stage is approached, the
output signal shows increasing amounts of compression and
clipping. For the input headroom case, higher frequency signals
require a bit more headroom than the lower frequency signals.
Figure 27 illustrates this point by plotting the typical distortion
vs. the output amplitude.

OVERLOAD BEHAVIOR AND RECOVERY

Input

The specified input common-mode voltage of the ADA4853-1/
ADA4853-2/ADA4853-3 is 200 mV below the negative supply
to within 1.2 V of the positive supply. Exceeding the top limit
results in lower bandwidth and increased rise time. Pushing the
input voltage of a unity-gain follower to less than 1.2 V from the
positive supply leads to an increasing amount of output error as
well as increased settling time. The recovery time from input
voltages 1.2 V or closer to the positive supply is approximately
40 ns; this is limited by the settling artifacts caused by transis­tors in the input stage coming out of saturation.

The amplifiers do not exhibit phase reversal, even for input
voltages beyond the voltage supply rails. Going more than

0.6 V beyond the power supplies turns on protection diodes
at the input stage, greatly increasing the current draw of the
devices.

–1.0

–1.2

(mV)

OS

–1.4

V

–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

Figure 50. V

vs. Common-Mode Voltage, VS = 5 V

OS

VCM (V)

5884-022

Rev. C | Page 14 of 16

ADA4853-1/ADA4853-2/ADA4853-3

www.BDTIC.com/ADI

APPLICATIONS INFORMATION

SINGLE-SUPPLY VIDEO AMPLIFIER

With low differential gain and phase errors and wide 0.5 dB
flatness, the ADA4853-1/ADA4853-2/ADA4853-3 are ideal
solutions for portable video applications. Figure 51 shows a
typical video driver set for a noninverting gain of +2, where

= RG = 1 kΩ. The video amplifier input is terminated into a

R

F

shunt 75 Ω resistor. At the output, the amplifier has a series
75 Ω resistor for impedance matching to the video load.

When operating in low voltage, single-supply applications, the
input signal is only limited by the input stage headroom.

R

F

C1

+V

S

2.2µF

+

P

D

R

G

V

IN

C2

0.01µF

U1

Figure 51. Video Amplifier

75Ω

V

75Ω CABLE

75Ω

V

OUT

5884-043

POWER SUPPLY BYPASSING

Attention must be paid to bypassing the power supply pins of
the ADA4853-1/ADA4853-2/ADA4853-3. High quality capacitors
with low equivalent series resistance (ESR), such as multilayer
ceramic capacitors (MLCCs), should be used to minimize
supply voltage ripple and power dissipation. A large, usually
tantalum, 2.2 μF to 47 μF capacitor located in proximity to the
ADA4853-1/ADA4853-2/ADA4853-3 is required to provide
good decoupling for lower frequency signals. The actual value is
determined by the circuit transient and frequency requirements.
In addition, 0.1 μF MLCC decoupling capacitors should be
located as close to each of the power supply pins as is physically
possible, no more than ⅛ inch away. The ground returns should
terminate immediately into the ground plane. Locating the bypass
capacitor return close to the load return minimizes ground loops
and improves performance.

LAYOUT

As is the case with all high speed applications, careful attention
to printed circuit board (PCB) layout details prevents associated
board parasitics from becoming problematic. The ADA4853-1/
ADA4853-2/ADA4853-3 can operate at up to 100 MHz; there­fore, proper RF design techniques must be employed. The PCB
should have a ground plane covering all unused portions of the
component side of the board to provide a low impedance return
path. Removing the ground plane on all layers from the area
near and under the input and output pins reduces stray capacit­ance. Signal lines connecting the feedback and gain resistors
should be kept as short as possible to minimize the inductance
and stray capacitance associated with these traces. Termination
resistors and loads should be located as close as possible to their
respective inputs and outputs. Input and output traces should
be kept as far apart as possible to minimize coupling (crosstalk)
through the board. Adherence to microstrip or stripline design
techniques for long signal traces (greater than 1 inch) is
recommended. For more information on high speed board
layout, go to: www.analog.com to view A Practical Guide to
High-Speed Printed-Circuit-Board Layout.

Rev. C | Page 15 of 16

ADA4853-1/ADA4853-2/ADA4853-3

R

R

www.BDTIC.com/ADI

OUTLINE DIMENSIONS

2.20

2.00

1.80

2.40

0.30

0.15

4 5 6

3 2 1

0.65 BSC

2.10

1.80

1.10

0.80

SEATING
PLANE

0.40

0.10

0.22

0.08

1.35

1.25

1.15

1.00

0.90

0.70

0.10 MAX

PIN 1

1.30 BSC

0.10 COPLANARITY

COMPLIANT TO JEDEC STANDARDS MO-203-AB

Figure 52. 6-Lead Thin Shrink Small Outline Transistor Package [SC70]

(KS-6)—Dimensions shown in millimeters

3.00

BSC SQ

PIN 1

INDICATO

0.90

0.85

0.80

SEATING

PLANE

12° MAX

TOP

VIEW

0.30

0.23

0.18

*

COMPLIANT

EXCEPT FOR EXPOSED PAD DIMENSION.

BSC SQ

Figure 54. 16-Lead Lead Frame Chip Scale Package [LFCSP_VQ]

3 mm × 3 mm Body, Very Thin Quad (CP-16-3)—Dimensions shown in millimeters

4.50

4.40

4.30

PIN 1

1.05

0.46

0.36

0.26

1.00

0.80

Figure 53. 14-Lead Thin Shrink Small Outline Package [TSSOP]

0.60 MAX

1.50 REF

13

12

(BOTTOM VIEW)

9

8

0.45

2.75

0.50

BSC

0.80 MAX

0.65 TYP

0.05 MAX

0.02 NOM

0.20 REF

TO

JEDEC STANDARDS MO-220-VEED-2

5.10

5.00

4.90

14

0.65

BSC

0.15

0.05

COMPLIANT TO JEDEC STANDARDS MO-153-AB-1

0.30

0.19

8

6.40

BSC

71

1.20
MAX

SEATING
PLANE

0.20

0.09

COPLANARITY

0.10

(RU-14)—Dimensions shown in millimeters

0.50

0.40

EXPOSED

PAD

0.30

16

1

4

5

N

P

I

D

N

I

*

1.65

1.50 SQ

1.35

0.25 MIN

1

O

C

I

A

T

8°
0°

0.75

0.60

0.45

ORDERING GUIDE

Te mp e ra tu r e

Model

ADA4853-1AKSZ-R21 –40°C to +85°C 6-Lead Thin Shrink Small Outline Transistor Package (SC70) 250 KS-6 HEC
ADA4853-1AKSZ-R71 –40°C to +85°C 6-Lead Thin Shrink Small Outline Transistor Package (SC70) 3,000 KS-6 HEC
ADA4853-1AKSZ-RL
ADA4853-2YCPZ-R2
ADA4853-2YCPZ-RL1 –40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 5,000 CP-16-3 H0H
ADA4853-2YCPZ-RL7
ADA4853-3YCPZ-R2
ADA4853-3YCPZ-RL1 –40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 5,000 CP-16-3 H0L
ADA4853-3YCPZ-R7
ADA4853-3YRUZ

1

ADA4853-3YRUZ-RL
ADA4853-3YRUZ-R7

1

Z = RoHS Compliant Part.

©2006–2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05884-0-10/07(C)

Range Package Description

1

–40°C to +85°C 6-Lead Thin Shrink Small Outline Transistor Package (SC70) 10,000 KS-6 HEC

1

–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 250 CP-16-3 H0H

1

–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 1,500 CP-16-3 H0H

1

–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 250 CP-16-3 H0L

1

–40°C to +105°C 16-Lead Lead Frame Chip Scale Package (LFCSP_VQ) 1,500 CP-16-3 H0L

–40°C to +105°C 14-Lead Thin Shrink Small Outline Package (TSSOP) 96 RU-14

1

–40°C to +105°C 14-Lead Thin Shrink Small Outline Package (TSSOP) 2,500 RU-14

1

–40°C to +105°C 14-Lead Thin Shrink Small Outline Package (TSSOP) 1,000 RU-14

Rev. C | Page 16 of 16

Ordering
Quantity

Package
Option Branding