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ADA4898-2 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADA4898-2
Beschreibung (ADA4898-1/-2) High Speed Op Amp
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 20 Seiten
ADA4898-2 Datasheet, Funktion
High Voltage, Low Noise, Low Distortion,
Unity-Gain Stable, High Speed Op Amp
ADA4898-1/ADA4898-2
FEATURES
Ultralow noise
0.9 nV/√Hz
2.4 pA/√Hz
1.2 nV/√Hz at 10 Hz
Ultralow distortion: −93 dBc at 500 kHz
Wide supply voltage range: ±5 V to ±16 V
High speed
−3 dB bandwidth: 65 MHz (G = +1)
Slew rate: 55 V/µs
Unity gain stable
Low input offset voltage: 160 µV maximum
Low input offset voltage drift: 1 μV/°C
Low input bias current: −0.1 µA
Low input bias current drift: 2 nA/°C
Supply current: 8 mA
Power-down feature for single 8-lead package
APPLICATIONS
Instrumentation
Active filters
DAC buffers
SAR ADC drivers
Optoelectronics
GENERAL DESCRIPTION
The ADA4898 is an ultralow noise and distortion, unity gain
stable, voltage feedback op amp that is ideal for use in 16-bit and
18-bit systems with power supplies from ±5 V to ±16 V. The
ADA4898 features a linear, low noise input stage and internal
compensation that achieves high slew rates and low noise.
With the wide supply voltage range, low offset voltage, and wide
bandwidth, the ADA4898 is extremely versatile, and it features a
cancellation circuit that reduces input bias current.
The ADA4898 is available in an 8-lead SOIC package that
features an exposed metal paddle to improve power dissipation and
heat transfer to the negative supply plane. This EPAD offers a
significant thermal relief over traditional plastic packages. The
ADA4898 is rated to work over the extended industrial
temperature range of −40°C to +105°C.
www.DataSheet.co.kr
CONNECTION DIAGRAM
ADA4898-1
TOP VIEW
(Not to Scale)
NC 1
–IN 2
+IN 3
–VS 4
8 PD
7 +VS
6 VOUT
5 NC
NC = NO CONNECT
Figure 1. Single 8-Lead ADA4898-1 SOIC_N_EP (RD-8-1)
ADA4898-2
TOP VIEW
(Not to Scale)
VOUT1 1
8 +VS
–IN1 2
7 VOUT2
+IN1 3
6 –IN2
–VS 4
5 +IN2
Figure 2. Dual 8-Lead ADA4898-2 SOIC_N_EP (RD-8-1)
10
CURRENT
1 VOLTAGE
10
1
0.1
1
0.1
10 100 1k 10k 100k
FREQUENCY (Hz)
Figure 3. Input Voltage Noise and Current Noise vs. Frequency
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
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 ©2008-2010 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/






ADA4898-2 Datasheet, Funktion
ADA4898-1/ADA4898-2
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
1 NC
2 −IN
3 +IN
4 −VS
5 NC
6 VOUT
7 +VS
8 PD
EP
Table 6. Pin Function Descriptions
Pin No.
Mnemonic
1 VOUT1
2 −IN1
3 +IN1
4 −VS
5 +IN2
6 −IN2
7 VOUT2
8 +VS
EP
ADA4898-1
TOP VIEW
(Not to Scale)
NC 1
8 PD
–IN 2
7 +VS
+IN 3
6 VOUT
–VS 4
5 NC
NOTES
1. EXPOSED PAD CAN BE CONNECTED
TO THE NEGATIVE SUPPLY (−VS) OR
LEFT FLOATING.
Figure 5. Single 8-Lead SOIC_N_EP Pin Configuration
Description
No Connect.
Inverting Input.
Noninverting Input.
Negative Supply.
No Connect.
Output.
Positive Supply.
Power Down Not.
Exposed Pad. Can be connected to the negative supply (−VS) or can be left floating.
ADA4898-2
TOP VIEW
www.DataSheet.co.kr
(Not to Scale)
VOUT1 1
8 +VS
–IN1 2
7 VOUT2
+IN1 3
6 –IN2
–VS 4
5 +IN2
NOTES
1. EXPOSED PAD CAN BE CONNECTED
TO THE NEGATIVE SUPPLY (−VS) OR
LEFT FLOATING.
Figure 6. Dual 8-Lead SOIC_N_EP Pin Configuration
Description
Output 1.
Inverting Input 1.
Noninverting Input 1.
Negative Supply.
Noninverting Input 2.
Inverting Input 2.
Output 2.
Positive Supply.
Exposed Pad. Can be connected to the negative supply (−VS) or can be left floating.
Rev. C | Page 6 of 20
Datasheet pdf - http://www.DataSheet4U.net/

6 Page









ADA4898-2 pdf, datenblatt
ADA4898-1/ADA4898-2
1000
N = 6180
MEAN: –0.13
SD: 0.02
VS = ±15V
800
600
400
200
0
–0.25
–0.20
–0.15
–0.10
–0.05
INPUT BIAS CURRENT (µA)
Figure 36. Input Bias Current Distribution
0
1000
800
N = 6180
MEAN: 27
SD: 20
VS = ±15V
600
400
200
0
–60 –30
0
30 60 90 120
INPUT OFFSET VOLTAGE (µV)
Figure 37. Input Offset Voltage Distribution, VS = ±15 V
www.DataSheet.co.kr
Rev. C | Page 12 of 20
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12 Page





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