How it Works
Analog Devices
Loading...
AD8515
Service Manual
16 pgs192.64 Kb0
Table of contents
Loading...

Analog Devices AD8515 Service Manual

1.8 V Low Power CMOS Rail-to-Rail
FEATURES Single-Supply Operation: 1.8 V to 5 V Offset Voltage: 6 mV Max Space-Saving SOT-23 and SC70 Packages Slew Rate: 2.7 V/␮s Bandwidth: 5 MHz Rail-to-Rail Input and Output Swing Low Input Bias Current: 2 pA Typ Low Supply Current @ 1.8 V: 450 ␮A Max
APPLICATIONS Portable Communications Portable Phones Sensor Interfaces Laser Scanners PCMCIA Cards Battery-Powered Devices New Generation Phones Personal Digital Assistants

GENERAL DESCRIPTION

The AD8515 is a rail-to-rail amplifier that can operate from a single-supply voltage as low as 1.8 V.
The AD8515 single amplifier, available in SOT-23-5L and SC70-5L packages, is small enough to be placed next to sensors, reducing external noise pickup.
The AD8515 is a rail-to-rail input and output amplifier with a gain bandwidth of 5 MHz and typical offset voltage of 1 mV from a 1.8 V supply. The low supply current makes these parts ideal for battery-powered applications. The 2.7 V/µs slew rate makes the AD8515 a good match for driving ASIC inputs, such as voice codecs.
The AD8515 is specified over the extended industrial tempera­ture range (–40°C to +125°C).
Input/Output Operational Amplifier
AD8515

PIN CONFIGURATION

5-Lead SC70 and SOT-23
(KS and RT Suffixes)
OUT
+IN
1
V–
2
AD8515
3
V+
5
ⴚIN
4
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. 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 © 2005 Analog Devices, Inc. All rights reserved.
AD8515–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(VS = 1.8 V, VCM = VS/2, TA = 25ⴗC, unless otherwise noted.)
Parameter Symbol Condition Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
Input Bias Current I
Input Offset Current I
OS
B
OS
VCM = VS/2 16mV –40°C < T
< +125°C8mV
A
VS = 1.8 V 2 30 pA –40°C < T –40°C < T
< +85°C 600 pA
A
< +125°C8nA
A
110pA
–40°C < T
< +125°C 500 pA
A
Input Voltage Range 0 1.8 V Common-Mode Rejection Ratio CMRR 0 V ≤ V
–40°C < T
Large Signal Voltage Gain A
VO
RL = 100 kΩ, 0.3 V ≤ V
≤ 1.8 V 50 dB
CM
< +125°C47 dB
A
≤ 1.5 V 110 400 V/mV
OUT
Offset Voltage Drift ∆VOS/∆T4µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
Output Voltage Low V
Short Circuit Limit I
OH
OL
SC
IL = 100 µA, –40°C < TA < +125°C 1.79 V
= 750 µA, –40°C < TA < +125°C 1.77 V
I
L
IL = 100 µA, –40°C < TA < +125°C10mV I
= 750 µA, –40°C < TA < +125°C30mV
L
20 mA
POWER SUPPLY
Supply Current/Amplifier I
SY
V
= VS/2 300 450 µA
OUT
–40°C < TA < +125°C 500 µA
DYNAMIC PERFORMANCE
Slew Rate SR RL = 10 kΩ 2.7 V/µs Gain Bandwidth Product GBP 5 MHz
NOISE PERFORMANCE
Voltage Noise Density e
n
f = 1 kHz 22 nV/√Hz f = 10 kHz 20 nV/√Hz
Current Noise Density i
Specifications subject to change without notice.
n
f = 1 kHz 0.05 pA/√Hz
REV. C–2–
AD8515
ELECTRICAL CHARACTERISTICS
(VS = 3.0 V, VCM = VS/2, TA = 25ⴗC, unless otherwise noted.)
Parameter Symbol Condition Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
Input Bias Current I
Input Offset Current I
OS
B
OS
VCM =VS/2 16mV –40°C < T
< +125°C8mV
A
VS = 3.0 V 2 30 pA –40°C < T –40°C < T
< +85°C 600 pA
A
< +125°C8nA
A
110pA
–40°C < T
< +125°C 500 pA
A
Input Voltage Range 0 3 V Common-Mode Rejection Ratio CMRR 0 V ≤ V
–40°C < T
Large Signal Voltage Gain A
VO
RL = 100 kΩ, 0.3 V ≤ V
≤ 3.0 V 54 dB
CM
< +125°C50 dB
A
≤ 2.7 V 250 1,000 V/mV
OUT
Offset Voltage Drift ∆VOS/∆T4µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
Output Voltage Low V
OH
OL
IL = 100 µA, –40°C < TA < +125°C 2.99 V
= 750 µA, –40°C < TA < +125°C 2.98 V
I
L
IL = 100 µA, –40°C < TA < +125°C10mV IL = 750 µA, –40°C < TA < +125°C20mV
POWER SUPPLY
Power Supply Rejection Ratio PSRR VS = 1.8 V to 5.0 V 65 85 dB
< +125°C5780dB
A
= VS/2 300 450 µA
Supply Current/Amplifier I
SY
–40°C < T V
OUT
–40°C < TA < +125°C 500 µA
DYNAMIC PERFORMANCE
Slew Rate SR R
= 10 kΩ 2.7 V/µs
L
Gain Bandwidth Product GBP 5 MHz
NOISE PERFORMANCE
Voltage Noise Density e
n
f = 1 kHz 22 nV/√Hz f = 10 kHz 20 nV/√Hz
Current Noise Density i
Specifications subject to change without notice.
n
f = 1 kHz 0.05 pA/√Hz
REV. C
–3–
AD8515
ELECTRICAL CHARACTERISTICS
(VS = 5.0 V, VCM = VS/2, TA = 25ⴗC, unless otherwise noted.)
Parameter Symbol Condition Min Typ Max Unit
INPUT CHARACTERISTICS
Offset Voltage V
Input Bias Current I
Input Offset Current I
OS
B
OS
VCM =VS/2 16mV –40°C < T
< +125°C8mV
A
VS = 5.0 V 5 30 pA –40°C < T –40°C < T
< +85°C 600 pA
A
< +125°C8nA
A
110pA
–40°C < T
< +125°C 500 pA
A
Input Voltage Range 0 5.0 V Common-Mode Rejection Ratio CMRR 0 V ≤ V
–40°C < T
Large Signal Voltage Gain A
VO
RL = 100 kΩ, 0.3 V ≤ V
≤ 5.0 V 60 75 dB
CM
< +125°C54 dB
A
≤ 4.7 V 500 2,000 V/mV
OUT
Offset Voltage Drift ∆VOS/∆T4µV/°C
OUTPUT CHARACTERISTICS
Output Voltage High V
Output Voltage Low V
OH
OL
IL = 100 µA, –40°C < TA < +125°C 4.99 V
= 750 µA, –40°C < TA < +125°C 4.98 V
I
L
IL = 100 µA, –40°C < TA < +125°C10mV IL = 750 µA, –40°C < TA < +125°C20mV
POWER SUPPLY
Power Supply Rejection Ratio PSRR VS = 1.8 V to 5.0 V 65 82 dB
< +125°C5780dB
A
= VS/2 350 500 µA
Supply Current/Amplifier I
SY
–40°C < T V
OUT
–40°C < TA < +125°C 600 µA
DYNAMIC PERFORMANCE
Slew Rate SR R
= 10 kΩ 2.7 V/µs
L
Gain Bandwidth Product GBP 5 MHz
NOISE PERFORMANCE
Voltage Noise Density e
n
f = 1 kHz 22 nV/√Hz f = 10 kHz 20 nV/√Hz
Current Noise Density i
Specifications subject to change without notice.
n
f = 1 kHz 0.05 pA/√Hz
REV. C–4–
AD8515

ABSOLUTE MAXIMUM RATINGS*

(TA = 25°C, unless otherwise noted.)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND to V
Differential Input Voltage . . . . . . . . . . . . . . . . . . ±6 V or ±V
Output Short-Circuit Duration
to GND . . . . . . . . . . . . . . . . . . . . Observe Derating Curves
Package Type ␪JA* ␪
5-Lead SOT-23 (RT) 230 146 °C/W
S
5-Lead SC70 (KS) 376 126 °C/W
S
*θJA is specified for worst-case conditions, i.e., θ
dered in circuit board for surface-mount packages.
JA
Storage Temperature Range
KS and RT Packages . . . . . . . . . . . . . . . . –65°C to +150°C
Operating Temperature Range
AD8515 . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +125°C
Junction Temperature Range
KS and RT Packages . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300°C
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

ORDERING GUIDE

Model Temperature Range Package Description Package Option Branding
AD8515ART-R2 –40ºC to +125ºC 5-Lead SOT-23 RT-5 BDA AD8515ART-REEL –40ºC to +125ºC 5-Lead SOT-23 RT-5 BDA AD8515ART-REEL7 –40ºC to +125ºC 5-Lead SOT-23 RT-5 BDA AD8515ARTZ-R2* –40ºC to +125ºC 5-Lead SOT-23 RT-5 AOH AD8515ARTZ-REEL* –40ºC to +125ºC 5-Lead SOT-23 RT-5 AOH AD8515ARTZ-REEL7* –40ºC to +125ºC 5-Lead SOT-23 RT-5 AOH AD8515AKS-R2 –40ºC to +125ºC 5-Lead SC70 KS-5 BDA AD8515AKS-REEL –40ºC to +125ºC 5-Lead SC70 KS-5 BDA AD8515AKS-REEL7 –40ºC to +125ºC 5-Lead SC70 KS-5 BDA AD8515AKSZ-R2* –40ºC to +125ºC 5-Lead SC70 KS-5 AOH AD8515AKSZ-REEL* –40ºC to +125ºC 5-Lead SC70 KS-5 AOH AD8515AKSZ-REEL7* –40ºC to +125ºC 5-Lead SC70 KS-5 AOH
*Z = Pb-free part.
JC
is specified for device sol-
Unit
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 the AD8515 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.
REV. C
–5–
Loading...
+ 11 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use