LM4040 Precision micropower shunt voltage reference | TI.com

LM4040 (ACTIVE)

Precision micropower shunt voltage reference

 

Description

The LM4040 series of shunt voltage references are versatile, easy-to-use references that cater to a vast array of applications. The 2-pin fixed-output device requires no external capacitors for operation and is stable with all capacitive loads. Additionally, the reference offers low dynamic impedance, low noise, and low temperature coefficient to ensure a stable output voltage over a wide range of operating currents and temperatures. The LM4040 uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to offer four output voltage tolerances, ranging from 0.1% (max) for the A grade to 1% (max) for the D grade. Thus, a great deal of flexibility is offered to designers in choosing the best cost-to-performance ratio for their applications.

Packaged in space-saving SC-70 and SOT-23-3 packages and requiring a minimum current of 45 µA (typ), the LM4040 also is ideal for portable applications. The LM4040xI is characterized for operation over an ambient temperature range of –40°C to 85°C. The LM4040xQ is characterized for operation over an ambient temperature range of –40°C to 125°C.

Features

  • Fixed Output Voltages of 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
  • Tight Output Tolerances and Low Temperature Coefficient
    • Max 0.1%, 100 ppm/°C – A Grade
    • Max 0.2%, 100 ppm/°C – B Grade
    • Max 0.5%, 100 ppm/°C – C Grade
    • Max 1.0%, 150 ppm/°C – D Grade
  • Low Output Noise: 35 µVRMS Typ
  • Wide Operating Current Range: 45 µA Typ to 15 mA
  • Stable With All Capacitive Loads; No Output Capacitor Required
  • Available in Extended Temperature Range: –40°C to 125°C

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Parametrics Compare all products in Shunt voltage references

 
Reference voltage
VO (V)
VO adj (Min) (V)
VO adj (Max) (V)
Initial accuracy (Max) (%)
Temp Coeff (Max) (ppm/ degree C)
Rating
Operating temperature range (C)
Iz for regulation (Min) (uA)
Iout/Iz (Max) (mA)
Package Group
LM4040 LM4040-N
Fixed     Fixed    
2.048
2.5
3
4.096
5
8.192
10    
2.048
2.5
3
4.096
5
8.192
10    
2.048     2.048    
10     10    
0.1
0.2
0.5
1    
0.1
0.2
0.5
1
2    
150     100
150    
Catalog     Catalog    
-40 to 125
-40 to 85    
-40 to 85    
45
47
50
65
67
75    
60
60
62
68
74
91
100    
15     15    
SC70 | 5
SOT-23 | 3
TO-92 | 3    
SC70 | 5
SOT-23 | 3
TO-92 | 3