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Details, datasheet, quote on part number:ICL7621BCPA
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| Part: | ICL7621BCPA |
| Category: | Analog & Mixed-Signal Processing => Amplifiers => Operational Amplifiers |
| Description: | Dual/Quad, Low Power CMOS Operational Amplifiers |
| Company: | Intersil Corporation |
| Datasheet: | Download ICL7621BCPA datasheet File size : 174 kB |
| Request For quote: | Find where to buy ICL7621BCPA
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Datasheet text preview:
ICL7621
Da ta S h eet M ay 200 1 Fi l e N u m b er 34 03. 4
Dual, Low Power CMOS Operational Amplifiers
The ICL761X/762X series is a family of m onolithic CM OS operational amplifiers. These devices provide the designer with high performance operation at low supply voltages and selectable quiescent currents. They are an ideal design tool when ultra low input current and low power dissipation are desired.
Features
· Wide Operating Voltage Range . . . . . . . . . . . ±1V to ±8V · High Input Impedance . . . . . . . . . . . . . . . . . . . . . . . 1012 · Input Current Lower Than BIFETs . . . . . . . . . . . 1pA (Typ) · Output Voltage Swing . . . . . . . . . . . . . . . . . . . . V+ and V· Available as Duals (Refer to ICL7611 for Singles) · Low Power Replacement for Many Standard Op Am ps
Title CL76 , L76 The basic amplifier will operate at supply voltages ranging , from ±1V to ±8V, and m ay be operated from a single Lithium L76 cell. The output swing ranges to within a few millivolts of the supply voltages. ) ubThe quiescent supply current of these am plifiers is set to 100µA at the factory. This results in power consumption as ct ual/ low as 200µW per amplifier. uad, Of particular significance is the extremely low (1pA) input current, input noise current of 0.01pA/Hz, and 1012 input w wer impedance. These features optimize performance in very MOS high source impedance applications. pera- The inputs are internally protected. Outputs are fully nal protected against short circuits to ground or to either supply. mpli- Because of the low power dissipation, junction temperature rise and drift are quite low. Applications utilizing these rs) utho features may include stable instruments, extended life designs, or high density packages. ) ey- Ordering Information TEMP. P KG . ords PART NUMBER RANGE (oC) P ACKAGE NO. nterE8.3 ICL7621BCP A 0 to 70 8 Ld PDIP l B Grade - IQ = 100µ A orpo- ICL7621DCPA E8.3 0 to 70 8 Ld PDIP D Grade - IQ = 100µ A tion, M8.15 ICL7621DCB A 0 to 70 8 Ld SOIC miD Grade - IQ = 100µ A nM8.15 ICL7621DCB A-T 0 to 70 8 Ld SOIC - D Grade Tape and Reel ctor, IQ = 100µA al, ad, eranal pli-
Applications
· Portable Instrum ents · Telephone Headsets · Hearing Aid/M icrophone Am plifiers · M eter Am plifiers · M edical Instrum ents · High Impedance Buffers
Pinouts
OUTA -INA +IN A V-
ICL7621 (PDIP, SOIC) TOP VIE W
1 + 2 3 4 8 V+ OUTB -INB +IN B
-
7
-
6 5
+
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Americas Inc. | Copyright © Intersil Americas Inc. 2001
ICL7621
Absolute Maximum Ratings
Supply Voltage V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . V- -0.3 to V+ +0.3V Differential Input Voltage (Note 1) . . . . . . . . . [( V+ +0.3) - (V- -0.3)]V Duration of Output Short Circuit (Note 2) . . . . . . . . . . . . . . Unlimited
Thermal Information
Thermal Resistance (Typical, Note 3) JA ( oC/W) JC (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . 120 N/A SOIC Package . . . . . . . . . . . . . . . . . . . 160 N/A Maximum Junction Temperature (Plastic P ackage) . . . . . . . . 150oC Maximum Storage Temperature Range . . . . . . . . . . - 65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300oC (SOIC - Lead Tips Only)
Operating Conditions
Temperature Range ICL7621C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0oC to 70oC
CAUTION: Stresses abo ve those listed in "Absolut e Ma ximum Ratings" may cause perma nent damag e to the device. This is a stress only ra ting and operation of th e device at th ese or any other conditio ns a bove those indicated in the ope ra tiona l sections of this sp ecification is n ot implied.
NOTES: 1. Long term offset voltage stability will be degraded if large input differential voltages are applied for long periods of time. 2. The outputs may be shorted to ground or to either supply, for VSUPPLY 10V. Care must be taken to insure that the dissipation rating is not exceeded. 3. JA is measured w ith the component mounted on an evaluation PC board in free air. Electrical Specifications VSUPPLY = ±5V, Unless Otherwise Specified ICL7621B PARAMETER Input Offset Voltage SYMBOL VOS TEST CONDITIONS R S 100k TE MP . (oC) 25
Full
ICL7621D TYP MAX UNITS 25 0.5 15 20 30 300 800 1.0 102 0.48 1012 91 86 100 0.01 0.1 120 0.16 2 10 50 400 4000 0.25 mV mV µV/oC pA pA pA pA pA pA V V V V dB dB dB MHz dB dB nV/Hz pA/Hz mA dB V/µs µs %
MIN ±4.2 ±4.9 ±4.8 ±4.5 80 75 68 70 80 -
TYP MAX MIN 15 0.5 5 7 30 300 800 1.0 102 0.48 1012 91 86 100 0.01 0.1 120 0.16 2 10 50 400 4000 0.25 ±4.2 ±4.9 ±4.8 ±4.5 80 75 68 70 80 -
Temperature Coefficient of VOS Input Offset Current
VOS/T R S 100k IOS
25 0 to 70 -55 to 125
Input Bias Cur rent
IBIAS
25 0 to 70 -55 to 125 IQ = 100µ A IQ = 100µA, RL = 100k
C ommon Mode V oltage Range Output Voltage Swing
V C MR VOUT
25 25 0 to 70 -55 to 125
Large Signal V oltage Gain
AVOL
VO = ±4.0V , R L = 100k , IQ = 100µ A
25 0 to 70 -55 to 125
U nity Gain Bandwidth Input Resistance C ommon Mode R ejection Ratio Power Supply Rejection Ratio ( VSUPPLY = ±8V to ±2V) Input Referred Noise Voltage Input Referred Noise Current S upply Current (Per Amplifier) C hannel Separation S lew Rate R ise Time Overshoot Factor
GB W RI N CM RR PSR R eN iN
IQ = 100µ A RS 100k , IQ = 100µ A RS 100k , IQ = 100µ A RS = 100, f = 1kHz RS = 100, f = 1kHz
25 25 25 25 25 25 25 25 25 25 25
ISUPPLY No Signal, No Load, IQ = 100µA VO1/VO2 AV = 100 SR tR OS AV = 1, C L = 100pF, VIN = 8VP-P, IQ = 100µA, RL = 100k VIN = 50mV, CL = 100pF, IQ = 100µA, RL = 100k VIN = 50mV, CL = 100pF, IQ = 100µA, RL = 100k
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ICL7621 Schematic Diagram
IQ INPUT STAGE SETTING STAGE OUTPUT STAGE V+
3K
3K
9 00K QP5 100K
A C VQP 6 QP4 QP9 QP7 QP 8 6.3V
QP 1 V+ +INP UT Q N1
QP2
QP3
Q N2
CFF = 9 pF OUTPUT CC = 33pF
VV+
-INPUT QN7 VQ N3 QN8 Q N4 QN5 V+ E G VQN6 Q N9 QN10 6.3V QN11
TABLE OF JUMPERS ICL7621 C, E
IQ 100µA
Application Information
Static Protection
All devices are static protected by the use of input diodes. However, strong static fields should be avoided, as it is possible for the strong fields to cause degraded diode junction characteristics, which m ay result in increased input leakage currents.
Output Stage and Load Driving Considerations
Each am plifiers' quiescent current flows prim arily in the output stage. This is approximately 70% of the IQ settings. This allows output swings to almost the supply rails for output loads of 1M, 100k, and 10k, using the output stage in a highly linear class A m ode. In this mode, crossover distortion is avoided and the voltage gain is maximized. However, the output stage can also be operated in Class AB for higher output currents. (See graphs under Typical Operating Characteristics). During the transition from Class A to Class B operation, the output transfer characteristic is nonlinear and the voltage gain decreases.
Latchup Avoidance
Junction-isolated CMO S circuits employ configurations which produce a parasitic 4-layer (PNPN ) structure. The 4-layer structure has characteristics similar to an SCR , and under certain circumstances m ay be triggered into a low impedance state resulting in excessive supply current. To avoid this condition, no voltage greater than 0.3V beyond the supply rails m ay be applied to any pin. In general, the op amp supplies must be established simultaneously with, or before any input signals are applied. If this is not possible, the drive circuits must lim it input current flow to 2mA to prevent latchup.
Frequency Com pensation
The ICL 76XX are interna lly com pensa te d, a nd are stab le for c los ed lo op gains as low as un ity with capacitive load s up to 100p F.
Choosing the Proper IQ
Each device in the ICL76XX family has a similar IQ setup scheme, which allows the amplifier to be set to nominal quiescent currents of 10µA, 100µA or 1mA. These current settings change only very slightly over the entire supply voltage range. The ICL7611/12 have an external IQ control term inal, permitting user selection of each amplifiers' quiescent current. The ICL7621 has a fixed IQ setting of 100µA.
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