LM346D Fast Delivery |IC PHOENIX CO.,LIMITED

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LM346D
PROGRAMMABLE QUAD BIPOLAR OPERATIONAL AMPLIFIERS
November 1997 OGRAMMABLE
QUAD BIPOLAR OPERATIONAL AMPLIFIERS PROGRAMMABLE ELECTRICAL CHARAC-
TERISTICS. BATTERY POWERED OPERATION. LOW SUPPLY CURRENT (250μA/amplifier). GAIN-BANDWIDTH PRODUCT: 1MHz. LARGEDC VOLTAGE GAIN: 120dB. LOW NOISE VOLTAGE: 28nV/VHz. WIDE POWER SUPPLY RANGE : ±1.5Vto
±22V. CLASSE AB OUTPUT STAGE. NO CROSS-
OVER DISTORTION. OVERLOADPROTECTION FORINPUTS AND
OUTPUTS
DESCRIPTION
The LM346consistsof fourindependent, high gain,
internally compensated, low power programmable
amplifiers. Two external resistors (Rset) allow the
userto program the gain-bandwith product, slew
rate, supply current, input bias current, input offset
current and input noise. For example the user can
trade-off supply current for bandwidthor optimize
noise figurefora given source resistance.Ina simi-
lar way other amplifier characteristics canbe
tailoredto the application.
Exceptfor the two programming pinsat the endof
the package the LM346 pin outis the sameas the
LM324 and LM348.
PROGRAMMING EQUATIONS:
Total supply current= 1mA (Iset =10μA)
Gain-bandwidthproduct= 1MHz (Iset =10μA)
Slew rate= 0.5V/μs(Iset =10μA)
Input bias current ≈30nA (Iset =10μA)
Iset= current into pin8 and pin9
(see schematic diagram)
Iset= VCC+− VCC−− 0.6V
Rset
Output1
Invertinginput1
Non-invertinginput1
Non-invertinginput2
Invertinginput2
Output2
Set
Output4
Invertinginput4
Non-invertinginput4
VCC
Non-invertinginput3
Invertinginput3
Output3
SetCC
PIN CONNECTIONS (top view)
ORDER CODES
Part
Number
Temperature
Range
Package
LM146 –55oC, +125oC ••
LM246 –40oC, +105oC ••
LM346 0oC, +70oC ••
Example: LM246N
DIP16
(Plastic Package)
SO16
(Plastic Micropackage)
LM146
LM246- LM346
1/9
Notes:1. For supply voltages less than ±15V, the absolute maximum input voltageis equaltothe supply voltage. Anyofthe amplifier outputs canbe shortedto ground indefinitly; however more than one should notbe
simultaneously shortedasthe maximum junction temperature willbe exceeded.
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter LM146 LM246 LM346 Unit
VCC Supply Voltage ±22 ±22 ±22 V Input Voltage- (note1) ±15 ±15 ±15 V
Vid Differential Input Voltage ±30 ±30 ±30 V
Output Short-circuit Duration- (note2) Infinite
Ptot Power Dissipation
N/D Suffix 500
Toper Operating Free-air Temperature Range –55to +125 –40to +105 0to +70 oC
Tstg Storage Temperature Range –65to +150 –65to +150 –65to +150 oC
VCCCC VCCor
Q18 Q19 otherop amps
VCCVCC
Output
Rset Rsetset Iset
SET SET
30Ω
Q12
Q10
Q11
Q16
Q15
Q14
Q138pFC
Non-
inverting
input
Q20
1kΩQ7Q21Q3
Q17
VCCVCC Q2
Inverting
input
SCHEMATIC DIAGRAM (1/4 LM146)
LM146- LM246- LM346
2/9
ELECTRICAL CHARACTERISTICS
VCC= ±15V, Iset =10μA, Tamb= +25oC (unless otherwise specified)
Symbol Parameter LM146 LM246- LM346 Unit
Min. Typ. Max. Min. Typ. Max.
Vio Input Offset Voltage (RS≤ 10kΩ)
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
0.5 3
0.5 5
Iio Input Offset Current
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
220 100
Iib Input Bias Current
Tamb =25oC
Tmin.≤ Tamb≤ Tmax. 100
100 250
Avd Large Signal Voltage Gain
(Vo= ±10V,RL= 10kΩ)
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
1000 50
V/mV
SVR Supply Voltage Rejection Ratio (RS≤ 10kΩ)
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
110 80
ICC Supply Current,all Amp,no Load
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
Vicm Input Common Mode Voltage Range
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
±13.5
±13.5
±13.5
±13.5
CMR Common Mode Rejection Ratio (RS≤ 10kΩ)
Tamb =25oC
Tmin.≤ Tamb≤ Tmax.
110 80
IOS Output Short-circuit Current
Tamb =25oC
Tmin.≤ Tamb≤ Tmax. 30 30 Vopp Output Voltage Swing (RL= 10kΩ)
Tamb =25oC
Tmin.≤ Tamb≤ Tmax. 12 Slew Rate(VI= ±10V,RL= 10kΩ,CL= 100pF,
unity Gain) 0.3 0.5 0.3 0.5
V/μs Input Resistance 1 1 MΩ Input Capacitance 2 2 pF
Vo1/Vo2 Channel Separation (RL= 10kΩ,Vo= 12Vpp) 120 120 dB
GBP Gain Bandwidth Product
(VI=10 mV,RL= 10kΩ,CL= 100pF= 100kHz) 0.8 1 0.5 1
MHz
THD Total Harmonic Distortion= 1kHz,Av= 20dB,RL= 10kΩ= 100pF,vo =2Vpp) 0.015 0.015 Equivalent Input Noise Voltage= 1kHz,Rs= 100Ω) 28 28 nVHz
LM146- LM246- LM346
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LM146- LM246- LM346
4/9
LM146- LM246- LM346
5/9
LM146- LM246- LM346
6/9

Partno	Mfg	Dc	Qty	Available	Descript
LM346D	ST	N/a	4502	avai	PROGRAMMABLE QUAD BIPOLAR OPERATIONAL AMPLIFIERS