LM4050AIM3-41 Datasheet, PDF (7/35 Pages) Texas Instruments – LM4050-N/LM4050-N-Q1 Precision Micropower Shunt Voltage Reference

LM4050-N, LM4050-N-Q1
www.ti.com
SNOS455E – MAY 2000 – REVISED APRIL 2013
LM4050-N-8.2
Electrical Characteristics
Boldface limits apply for T_A = T_J = T_MIN to T_MAX; all other limits T_A = T_J = 25°C. The grades A, B and C designate initial
Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2% and 0.5% respectively.
Symbol
Parameter
Conditions
V_R
I_RMIN
Reverse Breakdown Voltage
Reverse Breakdown Voltage
Tolerance ⁽³⁾
Minimum Operating Current
I_R = 150 μA
I_R = 150 μA
Industrial Temp. Range
Extended Temp. Range
ΔV_R/ΔT
ΔV_R/ΔI_R
Industrial Temp. Range
Extended Temp. Range
Average Reverse Breakdown
Voltage Temperature Coefficient ⁽³⁾
Reverse Breakdown Voltage
Change with Operating Current
Change ⁽⁴⁾
I_R = 10 mA
I_R = 1 mA
I_R = 150 μA
I_RMIN ≤ I_R ≤ 1 mA
1 mA ≤ I_R ≤ 15 mA
Z_R
e_N
ΔV_R
V_HYST
Reverse Dynamic Impedance
Wideband Noise
Reverse Breakdown Voltage Long
Term Stability
Thermal Hysteresis
(5)
I_R = 1 mA, f = 120 Hz,
I_AC = 0.1 I_R
I_R = 150 μA
10 Hz ≤ f ≤ 10 kHz
t = 1000 hrs
T = 25°C ±0.1°C
I_R = 150 μA
ΔT = −40°C to 125°C
Typical ⁽¹⁾
8.192
74
±40
±20
±20
0.6
7.0
0.6
150
120
LM4050-
NAIM3
LM4050-
NAEM3
Limits ⁽²⁾
±8.2
±35
±49
91
95
100
±50
1.3
2.5
10.0
18.0
2.3
LM4050-
NBIM3
LM4050-
NBEM3
Limits ⁽²⁾
±16
±43
±57
91
95
100
±50
1.3
2.5
10.0
18.0
LM4050-
NCIM3
LM4050-
NCEM3
Limits ⁽²⁾
±41
±68
±82
91
95
100
±50
1.3
2.5
10.0
18.0
Units
(Limit)
V
mV (max)
mV (max)
mV (max)
μA
μA (max)
μA (max)
μA (max)
ppm/°C
ppm/°C
ppm/°C (max)
mV
mV (max)
mV (max)
mV
mV (max)
mV (max)
Ω
μV_rms
ppm
mV
(1) Typicals are at T_J = 25°C and represent most likely parametric norm.
(2) Limits are 100% production tested at 25°C. Limits over temperature are guaranteed through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate National's AOQL.
(3) The boldface (over-temperature) limit for Reverse Breakdown Voltage Tolerance is defined as the room temperature Reverse
Breakdown Voltage Tolerance ±[(ΔV _R/ΔT)(maxΔT)(V_R)]. Where, ΔV_R/ΔT is the V_R temperature coefficient, maxΔT is the maximum
difference in temperature from the reference point of 25°C to T _MIN or T_MAX, and V_R is the reverse breakdown voltage. The total over-
temperature tolerance for the different grades in the industrial temperature range where maxΔT = 65°C is shown below: A-grade:
±0.425% = ±0.1% ±50 ppm/°C × 65°C B-grade: ±0.525% = ±0.2% ±50 ppm/°C × 65°C C-grade: ±0.825% = ±0.5% ±50 ppm/°C ×
65°CTherefore, as an example, the A-grade LM4050-N-2.5 has an over-temperature Reverse Breakdown Voltage tolerance of ±2.5V ×
0.425% = ±11 mV.
(4) Load regulation is measured on pulse basis from no load to the specified load current. Output changes due to die temperature change
must be taken into account separately.
(5) Thermal hysteresis is defined as the difference in voltage measured at +25°C after cycling to temperature -40°C and the 25°C
measurement after cycling to temperature +125°C.
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