Datenblatt-pdf.com


AD8574 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer AD8574
Beschreibung Rail-to-Rail Input/Output Operational Amplifiers
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 28 Seiten
AD8574 Datasheet, Funktion
Data Sheet
Zero-Drift, Single-Supply, Rail-to-Rail
Input/Output Operational Amplifiers
AD8571/AD8572/AD8574
FEATURES
Low offset voltage: 1 μV
Input offset drift: 0.005 μV/°C
Rail-to-rail input and output swing
5 V/2.7 V single-supply operation
High gain: 145 dB typical
CMRR: 140 dB typical
PSRR: 130 dB typical
Ultralow input bias current: 10 pA typical
Low supply current: 750 μA per op amp
Overload recovery time: 50 μs
No external capacitors required
APPLICATIONS
Temperature sensors
Pressure sensors
Precision current sensing
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
GENERAL DESCRIPTION
This family of amplifiers has ultralow offset, drift, and bias
current. The AD8571/AD8572/AD85741 are single, dual, and
quad amplifiers, respectively, featuring rail-to-rail input and
output swings. All are guaranteed to operate from 2.7 V to 5 V
single supply.
The AD8571/AD8572/AD8574 provide benefits previously
found only in expensive auto-zeroing or chopper-stabilized
amplifiers. Using Analog Devices, Inc., topology, these zero-
drift amplifiers combine low cost with high accuracy. (No
external capacitors are required.) Using a spread-spectrum,
auto-zero technique, the AD8571/AD8572/AD8574 eliminate
the intermodulation effects from interaction of the chopping
function with the signal frequency in ac applications.
With an offset voltage of only 1 μV and drift of 0.005 μV/°C, the
AD8571/AD8572/AD8574 are perfectly suited for applications
where error sources cannot be tolerated. Position and pressure
sensors, medical equipment, and strain gage amplifiers benefit
greatly from nearly zero drift over their operating temperature
range. Many more systems require the rail-to-rail input and
output swings provided by the AD8571/AD8572/AD8574.
1 Protected by U.S. Patent 6,130,578.
Rev. F
Document Feedback
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
NC 1
8 NC
–IN A 2 AD8571 7 V+
+IN A
3
TOP VIEW
(Not to Scale)
6
OUT A
V– 4
5 NC
NC = NO CONNECT
Figure 1. 8-Lead MSOP (RM Suffix)
NC 1
8 NC
–IN A 2 AD8571 7 V+
+IN A 3 TOP VIEW 6 OUT A
V– 4 (Not to Scale) 5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC (R Suffix)
OUT A 1
8 V+
–IN A 2 AD8572 7 OUT B
+IN A
3
TOP VIEW
(Not to Scale)
6
–IN B
V– 4
5 +IN B
Figure 3. 8-Lead TSSOP (RU Suffix)
OUT A 1
8 V+
–IN A 2 AD8572 7 OUT B
+IN A
3
TOP VIEW
(Not to Scale)
6
–IN B
V– 4
5 +IN B
Figure 4. 8-Lead SOIC (R Suffix)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3 AD8574 12 +IN D
V+ 4 TOP VIEW 11 V–
+IN B 5 (Not to Scale) 10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 5. 14-Lead TSSOP (RU Suffix)
OUT A 1
14 OUT D
–IN A 2
13 –IN D
+IN A 3 AD8574 12 +IN D
V+ 4 TOP VIEW 11 V–
+IN B 5 (Not to Scale) 10 +IN C
–IN B 6
9 –IN C
OUT B 7
8 OUT C
Figure 6. 14-Lead SOIC (R Suffix)
The AD8571/AD8572/AD8574 are specified for the extended
industrial/ automotive temperature range (−40°C to +125°C).
The AD8571 single amplifier is available in 8-lead MSOP and
narrow SOIC packages. The AD8572 dual amplifier is available in
8-lead narrow SOIC and surface-mount TSSOP packages. The
AD8574 quad amplifier is available in 14-lead narrow SOIC and
TSSOP packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1999–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com






AD8574 Datasheet, Funktion
AD8571/AD8572/AD8574
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage1
ESD (Human Body Model)
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
Rating
6V
GND − 0.3 V to VS + 0.3 V
±5.0 V
2000 V
Indefinite
−65°C to +150°C
−40°C to +125°C
−65°C to +150°C
300°C
1 Differential input voltage is limited to ±5.0 V or the supply voltage,
whichever is less.
Data Sheet
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
THERMAL CHARACTERISTICS
θJA is specified for the worst-case conditions, that is, θJA is
specified for a device soldered in a circuit board for SOIC and
TSSOP packages.
Table 4. Thermal Resistance
Package Type
8-Lead SOIC (R)
8-Lead MSOP (RM)
8-Lead TSSOP (RU)
14-Lead SOIC (R)
14-Lead TSSOP (RU)
θJA
158
190
240
120
180
θJC Unit
43 °C/W
44 °C/W
43 °C/W
36 °C/W
36 °C/W
ESD CAUTION
Rev. F | Page 6 of 28

6 Page









AD8574 pdf, datenblatt
AD8571/AD8572/AD8574
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
100
VS = ±2.5V
RL = 2kΩ
AV = 1
THD + N < 1%
TA = 25°C
1k 10k 100k
FREQUENCY (Hz)
1M
Figure 37. Maximum Output Swing vs. Frequency
VS = ±1.35V
AV = 120,000
0V
1sec
50mV
Figure 38. 0.1 Hz to 10 Hz Noise
VS = ±2.5V
AV = 120,000
1sec
50mV
Figure 39. 0.1 Hz to 10 Hz Noise
Data Sheet
364
VS = 2.7V
RS = 0Ω
312
260
208
156
104
52
0 0.5 1.0 1.5 2.0 2.5
FREQUENCY (kHz)
Figure 40. Voltage Noise Density from 0 Hz to 2.5 kHz
112
VS = 2.7V
RS = 0Ω
96
80
64
48
32
16
0 5 10 15 20
FREQUENCY (kHz)
Figure 41. Voltage Noise Density from 0 Hz to 25 kHz
25
182
VS = 5V
RS = 0Ω
156
130
104
78
52
26
0 0.5 1.0 1.5 2.0 2.5
FREQUENCY (kHz)
Figure 42. Voltage Noise Density from 0 Hz to 2.5 kHz
Rev. F | Page 12 of 28

12 Page





SeitenGesamt 28 Seiten
PDF Download[ AD8574 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
AD857016 V Rail-to-Rail Buffer AmplifiersAnalog Devices
Analog Devices
AD8571Rail-to-Rail Input/Output Operational AmplifiersAnalog Devices
Analog Devices
AD8572Rail-to-Rail Input/Output Operational AmplifiersAnalog Devices
Analog Devices
AD8574Rail-to-Rail Input/Output Operational AmplifiersAnalog Devices
Analog Devices

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche