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PDF AD8620 Data sheet ( Hoja de datos )
| Número de pieza | AD8620 | |
| Descripción | (AD8610 / AD8620) Wide Bandwidth JFET Operational Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Precision, Very Low Noise,
Low Input Bias Current, Wide
Bandwidth JFET Operational Amplifiers
AD8610/AD8620
FEATURES
Low noise: 6 nV/√Hz
Low offset voltage: 100 μV maximum
Low input bias current: 10 pA maximum
Fast settling: 600 ns to 0.01%
Low distortion
Unity gain stable
No phase reversal
Dual-supply operation: ±5 V to ±13 V
APPLICATIONS
Photodiode amplifiers
ATE
Instrumentation
Sensors and controls
High performance filters
Fast precision integrators
High performance audio
GENERAL DESCRIPTION
The AD8610/AD8620 are very high precision JFET input ampli-
fiers featuring ultralow offset voltage and drift, very low input
voltage and current noise, very low input bias current, and wide
bandwidth. Unlike many JFET amplifiers, the AD8610/AD8620
input bias current is low over the entire operating temperature
range. The AD8610/AD8620 are stable with capacitive loads of
over 1000 pF in noninverting unity gain; much larger capacitive
loads can be driven easily at higher noise gains. The AD8610/
AD8620 swing to within 1.2 V of the supplies even with a 1 kΩ
load, maximizing dynamic range even with limited supply volt-
ages. Outputs slew at 50 V/μs in either inverting or noninverting
gain configurations, and settle to 0.01% accuracy in less than
600 ns. Combined with high input impedance, great precision,
and very high output drive, the AD8610/AD8620 are ideal
amplifiers for driving high performance ADC inputs and
buffering DAC converter outputs.
PIN CONFIGURATIONS
NULL 1
8 NC
–IN 2 AD8610 7 V+
+IN 3 TOP VIEW 6 OUT
V– 4 (Not to Scale) 5 NULL
NC = NO CONNECT
Figure 1. 8-Lead MSOP and 8-Lead SOIC_N
OUTA 1
8 V+
–INA 2 AD8620 7 OUTB
+INA 3 TOP VIEW 6 –INB
V– 4 (Not to Scale) 5 +INB
Figure 2. 8-Lead SOIC_N
Applications for the AD8610/AD8620 include electronic instru-
ments; ATE amplification, buffering, and integrator circuits;
CAT/MRI/ultrasound medical instrumentation; instrumentation
quality photodiode amplification; fast precision filters (including
PLL filters); and high quality audio.
The AD8610/AD8620 are fully specified over the extended
industrial temperature range (−40°C to +125°C). The AD8610
is available in the narrow 8-lead SOIC and the tiny 8-lead MSOP
surface-mount packages. The AD8620 is available in the narrow
8-lead SOIC package. The 8-lead MSOP packaged devices are
avail-able only in tape and reel.
Rev. F
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.
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 ©2001–2008 Analog Devices, Inc. All rights reserved.
1 page  
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 10 sec)
Rating
27.3 V
VS− to VS+
±Supply voltage
Indefinite
–65°C to +150°C
–40°C to +125°C
–65°C to +150°C
300°C
AD8610/AD8620
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
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 4. Thermal Resistance
Package Type
8-Lead MSOP (RM)
8-Lead SOIC (R)
θJA1
190
158
θJC Unit
44 °C/W
43 °C/W
1 θJA is specified for worst-case conditions, that is, θJA is specified for a device
soldered in circuit board for surface-mount packages.
ESD CAUTION
Rev. F | Page 5 of 24
5 Page 
40
35 VRVSILN===±215k0VΩ0mV
30
25
20
15
+OS –OS
10
5
0
0 10 100 1k
CAPACITANCE (pF)
Figure 33. Small Signal Overshoot vs. Load Capacitance
10k
VS = ±13V
VIN = ±14V
AV = +1
FREQ = 0.5kHz
VIN
VOUT
TIME (400µs/DIV)
Figure 34. No Phase Reversal
AVVRCSIVLLN====p22±-+p0k11pΩ3=VF20V
AD8610/AD8620
CVVRASIVLLN====p22±-+pk011Ωp3=VF20V
TIME (400ns/DIV)
Figure 36. +Slew Rate at G = +1
CVVRASIVLLN====p22±-+p0k11Ωp3=VF20V
TIME (400ns/DIV)
Figure 37. –Slew Rate at G = +1
CVVRASIVLLN====p22±-–p0k11Ωp3=VF20V
TIME (1µs/DIV)
Figure 35. Large Signal Response at G = +1
TIME (1µs/DIV)
Figure 38. Large Signal Response at G = −1
Rev. F | Page 11 of 24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet AD8620.PDF ] | |
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