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KA248/KA348
QUAD OPERATIONAL AMPLIFIER
QUAD OPERATIONAL AMPLIFIERS
The KA248/KA348 is a true quad KA741. It consists of four independent, high-gain, internally compensated, low-power operational amplifiers which have been designed to provide functional characteristics identical to those of the familiar KA741 operational amplifier. In addition the total supply current for all four amplifiers is comparable to the Supply current of a single KA741 type OP Amp. Other features include input offset currents and input bias current which are much less than those of a standard KA741. Also, excellent isolation between amplifiers has been achieved by independently biasing each amplifier and using layout techniques which minimize thermal coupling. 14 DIP
14 SOP
FEATURES
* * * * * * * * * * KA741 OP Amp operating characteristics Low supply current drain Class AB output stage-no crossover distortion Pin compatible with the KA324 & KA3403 Low input offset voltage- 1mV Type. Low input offset current-4nA Type. Low input bias current-30nA Type. Gain bandwidth product for KA348 (unity gain)-1.0MHz Type. High degree of isolation between amplifiers-120dB Overload protection for inputs and outputs
BLOCK DIAGRAM
ORDERING INFORMATION
Device KA348 KA348D KA248 KA248D Package 14 DIP 14 SOP 14 DIP 14 SOP Operating Temperature 0 ~ +70I -25 ~ +85I
SCHEMATIC DIAGRAM
(One Section Only)
KA248/KA348
QUAD OPERATIONAL AMPLIFIER
ABSOLUTE MAXIMUM RATINGS (TA = 25I)
Characteristic Supply Voltage Differential Input Voltage Input Voltage Output Short Circuit Duration Operating Temperature KA248 KA348 Storage Temperature T STG T OPR Symbol VCC VI(DIFF) VI Value
I
a18 a36 a18
Unit V V V
Continuous - 25 ~ +85 0~ +70 - 65~ +150
I I I
ELECTRICAL CHARACTERISTICS
(VCC =15V, VEE= -15V, T A=25I, unless otherwise specified) Characteristic Input Offset Voltage Input Offset Current Input Bias Current Input Resistance Supply Current (all Amplifiers) Large Signal Voltage Gain Channel Separation Common Mode Input Voltage Range Small Signal Bandwidth Phase Margin Slew Rate Output Short Circuit Current Output Voltage Swing Common Mode Rejection Ratio Power Supply Rejection Ratio Symbol VIO IIO IBIAS RI ICC GV CS VI(R) BW MPH SR ISC VO(P.P) CMRR PSRR RL RS Test Conditions KA248 Min Typ 1 NOTE 1 4 NOTE 1 30 NOTE 1 0.8 2.5 2.4 25 NOTE 1 15 160 120 4.5 25 15 Max 6.0 7.5 50 125 200 500 0.8 2.5 2.4 160 V/mV 120 dB V 1.0 60 0.5 MHz Degress V/Is mA V dB dB 4.5 30 4 Min KA348 Typ 1 Max 6.0 7.5 50 100 200 400 nA nA M< mA Unit mV
10K<
2K<
f = 1KHz to 20KHz NOTE 1 GV = 1 GV = 1 GV = 1
a12
a12
1.0 60 0.5
10K< R 2K< R 10K< R 10K<
RL
L S S
NOTE 1 NOTE 1 NOTE 1
a12 a13 a10 a12
70 77 90 96
25
a12 a13 0 a12
70 77 90 96
25
NOTE 1
KA348: 0 KA248: -25
T +70I T +85I
A A
KA248/KA348
QUAD OPERATIONAL AMPLIFIER
TYPICAL PERFORMANCE CHARACTERISTICS
Fig. 1 SUPPLY CURRENT Fig. 2 VOLTAGE SWING
SUPPLY VOLTAGE (aV) Fig. 3 SOURCE CURRENT LIMIT
SUPPLY VOLTAGE (a V) Fig. 4 SINK CURRENT LIMIT
OUTPUT SOURCE CURRENT (mA) Fig. 5 OUTPUT IMPEDANCE
OUTPUT SINK CURRENT (mA) Fig. 6 COMMON-MODE REJECTION RATIO
FREQUENCY (HZ)
FREQUENCY (Hz)
KA248/KA348
Fig. 7 OPEN LOOP FREGUENCV RESPONSE
QUAD OPERATIONAL AMPLIFIER
Fig. 8 BODE PLOT
Fig. 9 LARGE SIGNAL PULSE RESPONSE
Fig. 10 SMALL SIGNAL PULSE RESPONSE
Fig. 11 UNDISTORTED OUTPUT VOLTAGE SWING
Fig. 12 INVERTING LARGE SIGNAL PULSE RESPONSE
KA248/KA348
QUAD OPERATIONAL AMPLIFIER
Fig. 13 INPUT NOISE VOLTAGE AND NOISE CURRENT
Fig. 14 POSITIVE COMMON MODE INPUT VOLTAGE LIMIT
FREQUENCY (Hz) Fig. 15 NEGATIVE COMMON.MODE INPUT VOLTAGE LIMFY
POSITIVE SUPPLY (V)
NEGATIVE SUPPLY VOLTS(V)

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