Analog Devices ADD8704 Datasheet

16 V Quad

+

FEATURES

Single-supply operation: 4.5 V to 16.5 V
Upper/lower buffers swing to V
Continuous output current: 35 mA
V

peak output current: 250 mA

COM

Offset voltage: 15 mV
Slew rate: 6 V/µs
Unity gain stable with large capacitive loads
Supply current: 700 µA per amplifier
Drop-in replacement for EL5420

APPLICATIONS

TFT LCD monitor panels
TFT LCD notebook panels
Communications equipment
Portable instrumentation
Electronic games

GENERAL DESCRIPTION

The ADD8704 is a single-supply quad operational amplifier that
has been optimized for today’s low cost TFT LCD notebook and
monitor panels. Output channels A and D swing to the rail for
use as end-point gamma references. Output channels B and C
provide high continuous and peak current drive for use as V
or repair amplifiers; they can also be used as midpoint gamma
references. All four amplifiers have excellent transient response
and have high slew rate and capacitive load drive capability. The
ADD8704 is specified over the –40°C to +85°C temperature
range and is available in either a 14-lead TSSOP or a 16-lead
LFCSP package for thin, portable applications.

Table 1. Input/Output Characteristics

Channel VIH V

A VDD – 1.7 V GND 15 150
B VDD – 1.7 V GND 35 250
C VDD GND 35 250
D VDD GND + 1.7 V 15 150

/GND

DD

I

IL

(mA) ISC (mA)

O

COM

Operational Amplifier

ADD8704

PIN CONFIGURATIONS

1

OUT A

+–

2

–IN A

3

+IN A

4

V+ V–

ADD8704

5

+IN B

6

–IN B

OUT B

+–

7

Figure 1. 14-Lead TSSOP (RU Suffix)

OUT A14OUT D13NC

16NC15

1

–IN A

+IN A

2

ADD8704

V+

3

TOP VIEW

IN B

4

5

–IN A

OUT B6OUT C

Figure 2. 16-Lead CSP (CP Suffix)

14

OUT D

+–

13

–IN D

12

+IN D

11

10

+IN C

9

–IN C

+–

8

OUT C

00001-0-0-1

12

–IN D

11

+IN D

10

V–

9

+IN C

7

8

–IN C

00001-0-002

Rev. 0

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] © 2003 Analog Devices, Inc. All rights reserved.

ADD8704

TABLE OF CONTENTS

Electrical Characteristics ................................................................. 3

Absolute Maximum Ratings............................................................ 5

Typical Performance Characteristics ............................................. 6

Application Information................................................................ 12

Theory.......................................................................................... 12

REVISION HISTORY

Revision 0: Initial Version

Input............................................................................................. 12

Output.......................................................................................... 12

Important Note........................................................................... 12

Outline Dimensions....................................................................... 14

Ordering Guide .......................................................................... 14

Rev. 0 | Page 2 of 16

ADD8704

ELECTRICAL CHARACTERISTICS

Table 2. VS = 16 V, VCM = VS/2, TA @ 25°C, unless otherwise noted

Parameter Symbol Condition Min Typ Max Unit

INPUT CHARACTERISTICS

Offset Voltage VOS 2 15 mV
Offset Voltage Drift

∆V

OS

Input Bias Current IB 200 1100 nA

–40°C ≤ TA ≤ +85°C 1500 nA

Input Offset Current IOS 10 100 nA

–40°C ≤ TA ≤ +85°C 250 nA

Common-Mode Rejection Ratio CMRR –40°C ≤ TA ≤ +85°C

Amp A VCM = 0 to (VS – 1.7 V) 54 95 dB
Amp B VCM = 0 to (VS – 1.7 V) 54 95 dB
Amp C VCM = 0 to VS 54 95 dB

Amp D VCM = 1.7 V to VS 54 95 dB
Large Signal Voltage Gain AVO RL = 10 kΩ, VO = 0.5 to (VS – 0.5 V) 1 10 V/mV
Input Impedance ZIN 400 kΩ
Input Capacitance CIN 1 pF

OUTPUT CHARACTERISTIS

Output Voltage High (A) VOH I

Optimized for Low Swing IL = 5 mA 15.6 15.75 V

–40°C ≤ TA ≤ +85°C 15.5 V

Output Voltage High (B) VOH I

Optimized for V

I

COM

–40°C ≤ TA ≤ +85°C 15.75 V

Output Voltage High (C) VOH I

Optimized for Midrange IL = 5 mA 15.8 15.9 V

–40°C ≤ TA ≤ +85°C 15.75 V

Output Voltage High (D) VOH I

Optimized for High Swing IL = 5 mA 15.75 15.85 V

–40°C ≤ TA ≤ +85°C 15.65 V

Output Voltage Low (A) VOL I

Optimized for Low Swing IL = 5 mA 80 200 mV

–40°C ≤ TA ≤ +85°C 300 mV

Output Voltage Low (B) VOL I

Optimized for V

I

COM

–40°C ≤ TA ≤ +85°C 250 mV

Output Voltage Low (C) VOL I

Optimized for Midrange IL = 5 mA 50 150 mV

–40°C ≤ TA ≤ +85°C 250 mV

Output Voltage Low (D) VOL I

Optimized for High Swing IL = 5 mA 375 500 mV

–40°C ≤ TA ≤ +85°C 600 mV

Continuous Output Current (A and D) I
Continuous Output Current (B and C) I

15 mA

OUT

35 mA

OUT

Peak Output Current (A and D) IPK V
Peak Output Current (B and C) IPK V

SUPPLY CHARACTERISTICS

Supply Voltage VS 4.5 16 V
Power Supply Rejection Ratio PSRR VS = 4 V to 17 V, –40°C ≤ TA ≤ +85°C 70 90 dB
Total Supply Current ISY V

–40°C ≤ TA ≤ +85°C 4 mA

/∆T

–40°C ≤ T

= 100 µA 15.985 V

L

= 100 µA 15.995 V

L

= 5 mA 15.8 15.9 V

L

= 100 µA 15.995 V

L

= 100 µA 15.99 V

L

= 100 µA 20 mV

L

= 100 µA 5 mV

L

= 5 mA 50 150 mV

L

= 100 µA 5 mV

L

= 100 µA 50 mV

L

= 16 V 50 mA

S

= 16 V 200 mA

S

= VS/2, No Load 2.8 3.4 mA

O

≤ +85°C 10 µV/°C

A

Rev. 0 | Page 3 of 16

ADD8704

ELECTRICAL CHARACTERISTICS (CONTINUED)

Parameter Symbol Condition Min Typ Max Unit

DYNAMIC PERFORMANCE

Slew Rate SR RL = 2 kΩ, CL = 200 pF 4 6 V/µs
Gain Bandwidth Product GBP RL = 10 kΩ, CL = 40 pF 5.8 MHz
–3 dB Bandwidth BW RL = 10 kΩ, CL = 40 pF 6.8 MHz
Phase Margin Øo RL = 10 kΩ, CL = 40 pF 55 Degrees
Channel Separation 75 dB

NOISE PERFORMANCE

Voltage Noise Density (A, B, and C) en f = 1 kHz 26 nV/√Hz

e

Voltage Noise Density (D) en f = 1 kHz 36 nV/√Hz

e

Current Noise Density in f = 10 kHz 0.8 pA/√Hz

f = 10 kHz 25 nV/√Hz

n

f = 10 kHz 35 nV/√Hz

n

Rev. 0 | Page 4 of 16

ADD8704

ABSOLUTE MAXIMUM RATINGS

Table 3. ADD8704 Stress Ratings1

Parameter Rating

Supply Voltage (VS) 18 V
Input Voltage –0.5 V to VS + 0.5 V
Differential Input Voltage VS
Storage Temperature Range –65°C to +150°C
Operating Temperature Range –40°C to +85°C
Junction Temperature Range –65°C to +150°C
Lead Temperature Range 300°C
ESD Tolerance (HBM) ±1500 V
ESD Tolerance (MM) 175 V

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this part features proprietary
ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic
discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of
functionality.

Table 4. Package Characteristics

Package Type θ

2

θJC Unit

JA

14-Lead TSSOP (RU) 180 35 °C/W
16-Lead LFCSP (CP) 383 303 °C/W

1

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 sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.

2

θJA is specified for worst-case conditions, i.e., θJA is specified for devices

soldered onto a circuit board for surface-mount packages.

3

DAP is soldered down to PCB.

Rev. 0 | Page 5 of 16