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ADA4817-1 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADA4817-1
Beschreibung FastFET Op Amps
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 28 Seiten
ADA4817-1 Datasheet, Funktion
Data Sheet
FEATURES
High speed
−3 dB bandwidth (G = 1, RL = 100 Ω): 1050 MHz
Slew rate: 870 V/µs
0.1% settling time: 9 ns
Low input bias current: 2 pA
Low input capacitance
Common-mode capacitance: 1.3 pF
Differential-mode capacitance: 0.1 pF
Low noise
4 nV/√Hz @ 100 kHz
2.5 fA/√Hz @ 100 kHz
Low distortion
−90 dBc @ 10 MHz (G = 1, RL = 1 kΩ)
Offset voltage: 2 mV maximum
High output current: 40 mA
Supply current per amplifier: 19 mA
Power-down supply current per amplifier: 1.5 mA
APPLICATIONS
Photodiode amplifiers
Data acquisition front ends
Instrumentation
Filters
ADC drivers
CCD output buffers
Low Noise, 1 GHz
FastFET Op Amps
ADA4817-1/ADA4817-2
CONNECTION DIAGRAMS
ADA4817-1
TOP VIEW
(Not to Scale)
PD 1
FB 2
–IN 3
+IN 4
8 +VS
7 OUT
6 NC
5 –VS
NC = NO CONNECT
Figure 1. 8-Lead LFCSP (CP-8-2)
ADA4817-1
TOP VIEW
(Not to Scale)
FB 1
–IN 2
+IN 3
–VS 4
8 PD
7 +VS
6 OUT
5 NC
NC = NO CONNECT
Figure 2. 8-Lead SOIC (RD-8-1)
ADA4817-2
TOP VIEW
(Not to Scale)
–IN1 1
+IN1 2
NC 3
–VS2 4
12 –VS1
11 NC
10 +IN2
9 –IN2
GENERAL DESCRIPTION
The ADA4817-1 (single) and ADA4817-2 (dual) FastFET
amplifiers are unity-gain stable, ultrahigh speed voltage
feedback amplifiers with FET inputs. These amplifiers were
developed with the Analog Devices, Inc., proprietary eXtra Fast
Complementary Bipolar (XFCB) process, which allows the
amplifiers to achieve ultralow noise (4 nV/√Hz; 2.5 fA/√Hz)
as well as very high input impedances.
With 1.3 pF of input capacitance, low noise (4 nV/√Hz), low
offset voltage (2 mV maximum), and 1050 MHz −3 dB band-
width, the ADA4817-1/ADA4871-2 are ideal for data acquisition
front ends as well as wideband transimpedance applications,
such as photodiode preamps.
Rev. B
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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.
NC = NO CONNECT
Figure 3. 16-Lead LFCSP (CP-16-20)
With a wide supply voltage range from 5 V to 10 V and the
ability to operate on either single or dual supplies, the
ADA4817-1/ ADA4817-2 are designed to work in a variety of
applications including active filtering and ADC driving.
The ADA4817-1 is available in a 3 mm × 3 mm, 8-lead LFCSP and
8-lead SOIC, and the ADA4817-2 is available in a 4 mm × 4 mm,
16-lead LFCSP. These packages feature a low distortion pinout
that improves second harmonic distortion and simplifies circuit
board layout. They also feature an exposed paddle that provides a
low thermal resistance path to the printed circuit board (PCB).
This enables more efficient heat transfer and increases reliability.
These products are rated to work over the extended industrial
temperature range (−40°C to +105°C).
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com






ADA4817-1 Datasheet, Funktion
ADA4817-1/ADA4817-2
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
ADA4817-1
TOP VIEW
(Not to Scale)
PD 1
FB 2
–IN 3
+IN 4
8 +VS
7 OUT
6 NC
5 –VS
NC = NO CONNECT
NOTES
1. EXPOSED PAD CAN BE CONNECTED
TO GROUND PLANE OR NEGATIVE
SUPPLY PLANE.
Figure 5. ADA4817-1 Pin Configuration (8-Lead LFCSP)
Data Sheet
Table 5. ADA4817-1 Pin Function Descriptions (8-Lead LFCSP)
Pin No.
Mnemonic
Description
1 PD
Power-Down. Do not leave floating.
2 FB
Feedback Pin.
3 −IN
Inverting Input.
4 +IN
Noninverting Input.
5 −VS
Negative Supply.
6 NC
No Connect.
7 OUT
Output.
8 +VS
Positive Supply.
Exposed pad (EPAD)
Exposed Pad. Can be connected to GND, −VS plane, or left floating.
ADA4817-1
TOP VIEW
(Not to Scale)
FB 1
–IN 2
+IN 3
–VS 4
8 PD
7 +VS
6 OUT
5 NC
NC = NO CONNECT
NOTES
1. EXPOSED PAD CAN BE CONNECTED
TO GROUND PLANE OR NEGATIVE
SUPPLY PLANE.
Figure 6. ADA4817-1 Pin Configuration (8-Lead SOIC)
Table 6. ADA4817-1 Pin Function Descriptions (8-Lead SOIC)
Pin No.
Mnemonic
Description
1 FB
Feedback Pin.
2 −IN
Inverting Input.
3 +IN
Noninverting Input.
4 −VS
Negative Supply.
5 NC
No Connect.
6 OUT
Output.
7 +VS
8 PD
Positive Supply.
Power-Down. Do not leave floating.
Exposed pad (EPAD)
Exposed Pad. Can be connected to GND, −VS plane, or left floating.
Rev. B | Page 6 of 28

6 Page









ADA4817-1 pdf, datenblatt
ADA4817-1/ADA4817-2
1.6
VS = ±5V
1.5
1.4
RL = 100
–V-S + VOUT
1.3
+VS – VOUT
1.2 +VS – VOUT
1.1
1.0
0.9
0.8
–40
–20
VS = +5V
–VS + VOUT
0 20 40 60
TEMPERATURE (°C)
80
100
Figure 32. Output Saturation Voltage vs. Temperature
70 0
60
GAIN
50
–45
40
PHASE
30
–90
20
10 –135
0
–10
10k
100k
1M 10M
FREQUENCY (Hz)
100M
–180
1G
Figure 33. Open-Loop Gain and Phase vs. Frequency
Data Sheet
N: 4197
800 MEAN: –0.0248457
SD: 0.245658
700
600
500
400
300
200
100
0
–1.5 –1.0 –0.5
0
0.5 1.0 1.5
VOS (mV)
Figure 34. Input Offset Voltage Histogram
Rev. B | Page 12 of 28

12 Page





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