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Details, datasheet, quote on part number:AD820BR
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FEATURES True Single Supply Operation Output Swings Rail-to-Rail Input Voltage Range Extends Below Ground Single Supply Capability from 5 V to 36 V Dual Supply Capability from 2.5 V to 18 V Excellent Load Drive Capacitive Load Drive Up to 350 pF Minimum Output Current of 15 mA Excellent AC Performance for Low Power 800 A Max Quiescent Current Unity Gain Bandwidth: 1.8 MHz Slew Rate of 3.0 V/ s Excellent DC Performance 800 V Max Input Offset Voltage 1 V/ C Typ Offset Voltage Drift 25 pA Max Input Bias Current Low Noise 13 nV/Hz @ 10 kHz APPLICATIONS Battery-Powered Precision Instrumentation Photodiode Preamps Active Filters 12- to 14-Bit Data Acquisition Systems Medical Instrumentation Low Power References and Regulators PRODUCT DESCRIPTION
NULL IN +IN VS
Single Supply, Rail to Rail Low Power FET-Input Op Amp AD820
FUNCTIONAL BLOCK DIAGRAM
1 2 3 4
AD820
8 NC 7 +VS 6 VOUT
NC IN +IN VS
1 2 3 4
AD820
8 NC 7 +VS 6 VOUT
TOP VIEW (Not to Scale)
5 NULL
TOP VIEW (Not to Scale)
5 NC
NC = NO CONNECT
allowing the AD820 to accommodate input signals below ground in the single supply mode. Output voltage swing extends to within 10 mV of each rail providing the maximum output dynamic range. Offset voltage of 800 µV max, offset voltage drift of 1 µV/°C, typical input bias currents below 25 pA and low input voltage noise provide dc precision with source impedances up to a Gigaohm. 1.8 MHz unity gain bandwidth, 93 dB THD at 10 kHz and 3 V/µs slew rate are provided for a low supply current of 800 µA. The AD820 drives up to 350 pF of direct capacitive load and provides a minimum output current of 15 mA. This allows the amplifier to handle a wide range of load conditions. This combination of ac and dc performance, plus the outstanding load drive capability, results in an exceptionally versatile amplifier for the single supply user. The AD820 is available in two performance grades. The A and B grades are rated over the industrial temperature range of 40°C to +85°C. The AD820 is offered in two varieties of 8-lead package: plastic DIP, and surface mount (SOIC).
The AD820 is a precision, low power FET input op amp that can operate from a single supply of 5.0 V to 36 V, or dual supplies of ± 2.5 V to ± 18 V. It has true single supply capability with an input voltage range extending below the negative rail,
50 45 40
NUMBER OF UNITS
35 30 25 20 15 10 5 0 0 1 2 3 4 5 6 7 INPUT BIAS CURRENT pA 8 9 10
Figure 2. Gain of 2 Amplifier; VS = 5, 0, VIN = 2.5V Sine Centered at 1.25 Volts
Figure 1. Typical Distribution of Input Bias Current
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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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002
AD820SPECIFICATIONS (V = 0, 5 V @ T = 25 C, V
S A
CM
= 0 V, VOUT = 0.2 V unless otherwise noted.)
Max 0.8 1.2 25 5 20 500 400 80 80 15 10 Min AD820B Typ 0.1 0.5 2 2 0.5 2 0.5 1000 150 30 Max 0.4 0.9 10 2.5 10 Unit mV mV µV/°C pA nA pA nA V/mV V/mV V/mV V/mV V/mV V/mV
Parameter DC PERFORMANCE Initial Offset Max Offset over Temperature Offset Drift Input Bias Current a t TM A X Input Offset Current a t TM A X Open-Loop Gain TMIN to TMAX TMIN to TMAX TMIN to TMAX NOISE/HARMONIC PERFORMANCE Input Voltage Noise 0.1 Hz to 10 Hz f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz Input Current Noise 0.1 Hz to 10 Hz f = 1 kHz Harmonic Distortion f = 10 kHz DYNAMIC PERFORMANCE Unity Gain Frequency Full Power Response Slew Rate Settling Time to 0.1% to 0.01% INPUT CHARACTERISTICS Common-Mode Voltage Range1 TMIN to TMAX CMRR TMIN to TMAX Input Impedance Differential Common Mode OUTPUT CHARACTERISTICS Output Saturation Voltage2 V O L V E E TMIN to TMAX VCCVOH TMIN to TMAX V O L V E E TMIN to TMAX VCCVOH TMIN to TMAX V O L V E E TMIN to TMAX VCCVOH TMIN to TMAX Operating Output Current TMIN to TMAX Short-Circuit Current Capacitive Load Drive POWER SUPPLY Quiescent Current Power Supply Rejection TMIN to TMAX
Conditions
Min
AD820A Typ 0.1 0.5 2 2 0.5 2 0.5
VO = 0 V to 4 V
VO = 0.2 V to 4 V RL = 100 k RL = 10 k R L = 1 k
400 400 80 80 15 10
1000 150 30
2 25 21 16 13 18 0.8 RL = 10 k to 2.5 V VO = 0.25 V to 4.75 V 93 1.8 210 3 1.4 1.8 0.2 0.2 66 66 +4 +4 80 0.2 0.2 72 66
2 25 21 16 13 18 0.8 93 1.8 210 3 1.4 1.8 +4 +4 80
µV p-p n V / H z n V / H z n V / H z n V / H z fA p-p fA/ Hz dB MHz kHz V/µs µs µs V V dB dB pF pF
VO p-p = 4.5 V VO = 0.2 V to 4.5 V
VCM = 0 V to 2 V
1013 0.5 1013 2.8 ISINK = 20 µA ISOURCE = 20 µA ISINK = 2 mA ISOURCE = 2 mA ISINK = 15 mA ISOURCE = 15 mA 15 12 25 350 TMIN to TMAX VS+ = 5 V to 15 V 620 80 800 66 66
1013 0.5 1013 2.8
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900 15 12
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900
25 350 620 80 800
mV mV mV mV mV mV mV mV mV mV mV mV mA mA mA pF µA dB dB
70 70
2
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SPECIFICATIONS (V = 0, 5 V @ T = 25 C, V
S A
CM
= 0 V, VOUT = 0.2 V unless otherwise noted.)
Min AD820A Typ 0.1 0.5 2 2 0.5 2 0.5 400 400 80 80 20 10 1000 150 30 Max 0.8 1.5 25 5 20 400 400 80 80 20 10 Min AD820B Typ 0.3 0.5 2 2 0.5 2 0.5 1000 150 30
AD820
Max 0.4 1 10 2.5 10 Unit mV mV µV/°C pA nA pA nA V/mV V/mV V/mV V/mV V/mV V/mV
Parameter DC PERFORMANCE Initial Offset Max Offset over Temperature Offset Drift Input Bias Current a t T MAX Input Offset Current a t T MAX Open-Loop Gain TMIN to TMAX TMIN to TMAX TMIN to TMAX NOISE/HARMONIC PERFORMANCE Input Voltage Noise 0.1 Hz to 10 Hz f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz Input Current Noise 0.1 Hz to 10 Hz f = 1 kHz Harmonic Distortion f = 10 kHz DYNAMIC PERFORMANCE Unity Gain Frequency Full Power Response Slew Rate Settling Time to 0.1% to 0.01% INPUT CHARACTERISTICS Common-Mode Voltage Range 1 TMIN to TMAX CMRR TMIN to TMAX Input Impedance Differential Common Mode OUTPUT CHARACTERISTICS Output Saturation Voltage 2 V O L V E E TMIN to TMAX V CC V OH TMIN to TMAX V O L V E E TMIN to TMAX V CC V OH TMIN to TMAX V O L V E E TMIN to TMAX V CC V OH TMIN to TMAX Operating Output Current TMIN to TMAX Short-Circuit Current Capacitive Load Drive POWER SUPPLY Quiescent Current Power Supply Rejection TMIN to TMAX
Conditions
VO = 5 V to 4 V
VO = 4 V to 4 V RL = 100 k RL = 10 k R L = 1 k
2 25 21 16 13 18 0.8 93 1.9 105 3 1.4 1.8 5.2 5.2 66 66 +4 +4 80 1013 0.5 1013 2.8 ISINK = 20 µA ISOURCE = 20 µA ISINK = 2 mA ISOURCE = 2 mA ISINK = 15 mA ISOURCE = 15 mA 15 12 30 350 TMIN to TMAX VS+ = 5 V to 15 V 650 80 800 70 70 5.2 5.2 72 66
2 25 21 16 13 18 0.8 93 1.8 105 3 1.4 1.8 +4 +4 80 1013 0.5 1013 2.8
µV p-p nV/ Hz nV/ Hz nV/ Hz nV/ Hz fA p-p fA/ Hz dB MHz kHz V/µs µs µs V V dB dB pF pF
RL = 10 k VO = ± 4.5 V
VO p-p = 9 V VO = 0 V to ± 4.5 V
VCM = 5 V to +2 V
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900 15 12
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900
30 350 620 80 800
mV mV mV mV mV mV mV mV mV mV mV mV mA mA mA pF µA dB dB
70 70
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3
AD820SPECIFICATIONS
Parameter DC PERFORMANCE Initial Offset Max Offset over Temperature Offset Drift Input Bias Current a t T MAX Input Offset Current a t T MAX Open-Loop Gain TMIN to TMAX TMIN to TMAX TMIN to TMAX NOISE/HARMONIC PERFORMANCE Input Voltage Noise 0.1 Hz to 10 Hz f = 10 Hz f = 100 Hz f = 1 kHz f = 10 kHz Input Current Noise 0.1 Hz to 10 Hz f = 1 kHz Harmonic Distortion f = 10 kHz DYNAMIC PERFORMANCE Unity Gain Frequency Full Power Response Slew Rate Settling Time to 0.1% to 0.01% INPUT CHARACTERISTICS Common-Mode Voltage Range 1 TMIN to TMAX CMRR TMIN to TMAX Input Impedance Differential Common Mode OUTPUT CHARACTERISTICS Output Saturation Voltage2 V O L V E E TMIN to TMAX V C C VO H TMIN to TMAX V O L V E E TMIN to TMAX V C C VO H TMIN to TMAX V O L V E E TMIN to TMAX V C C VO H TMIN to TMAX Operating Output Current TMIN to TMAX Short-Circuit Current Capacitive Load Drive POWER SUPPLY Quiescent Current Power Supply Rejection TMIN to TMAX
(VS =
15 V @ TA = 25 C, VCM = 0 V, VOUT = 0 V unless otherwise noted.)
Min AD820A Typ 0.4 0.5 2 2 40 0.5 2 0.5 500 500 100 100 30 20 2000 500 45 Max 2 3 25 5 20 500 500 100 100 30 20 Min AD820B Typ Max 0.3 0.5 2 2 40 0.5 2 0.5 2000 500 45 1.0 2 10 2.5 10 Unit mV mV µV/°C pA pA nA pA nA V/mV V/mV V/mV V/mV V/mV V/mV µV p-p n V / H z n V / H z n V / H z n V / H z fA p-p fA/ Hz dB MHz kHz V/µs µs µs +14 +14 90 V V dB dB pF pF
Conditions
V CM = 0 V VCM = 10 V V CM = 0 V VO = +10 V to 10 V RL = 100 k RL = 10 k R L = 1 k
2 25 21 16 13 18 0.8 85 1.9 45 3 4.1 4.5 15.2 15.2 70 70 +14 +14 80 15.2 15.2 74 74
2 25 21 16 13 18 0.8 85 1.9 45 3 4.1 4.5
RL = 10 k VO = ± 10 V
VO p-p = 20 V VO = 0 V to ± 10 V
VCM = 15 V to 12 V
1013 0.5 1013 2.8 ISINK = 20 µA ISOURCE = 20 µA ISINK = 2 mA ISOURCE = 2 mA ISINK = 15 mA ISOURCE = 15 mA 20 15 45 350 TMIN to TMAX VS+ = 5 V to 15 V 700 80 900 70 70
1013 0.5 1013 2.8
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900 20 15
5 10 40 80 300 800
7 10 14 20 55 80 110 160 500 1000 1500 1900
45 350 700 80 900
mV mV mV mV mV mV mV mV mV mV mV mV mA mA mA
70 70
µA dB dB
4
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AD820
NOTES 1 This is a functional specification. Amplifier bandwidth decreases when the input common-mode voltage is driven in the range (+ VS 1 V) to +VS. Common-mode error voltage is typically less than 5 mV with the common-mode voltage set at 1 volt below the positive supply. 2 VOLVEE is defined as the difference between the lowest possible output voltage (V OL) and the minus voltage supply rail (V EE). VCCVOH is defined as the difference between the highest possible output voltage (V OH) and the positive supply voltage (V CC). Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS 1
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 18 V Internal Power Dissipation2 Plastic DIP (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6 W SOIC (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 W Input Voltage . . . . . . . . . . . . . . (+VS + 0.2 V) to (20 V + VS) Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ± 30 V Storage Temperature Range (N) . . . . . . . . . 65°C to +125°C Storage Temperature Range (R) . . . . . . . . . 65°C to +150°C Operating Temperature Range AD820A/B . . . . . . . . . . . . . . . . . . . . . . . . . 40°C to +85°C Lead Temperature Range (Soldering 60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
NOTES 1 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. 2 8-Lead Plastic DIP Package: JA = 90°C/W 8-Lead SOIC Package: JA = 160°C/W
ORDERING GUIDE
Model AD820AN AD820BN* AD820AR AD820BR
Temperature Range 40°C to +85°C 40°C to +85°C 40°C to +85°C 40°C to +85°C
Package Description 8-Lead Plastic Mini-DIP 8-Lead Plastic Mini-DIP 8-Lead SOIC 8-Lead SOIC
Package Options N-8 N-8 R-8 R-8
*Not for new design, obsolete April 2002.
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 AD820 features proprietary ESD protection circuitry, permanent damage may occur on devices s u b j e c t e d to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
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