LM4040AIZ-2.5 Datasheet, PDF (21/51 Pages) Texas Instruments – LM4040-N/LM4040Q-N Precision Micropower Shunt Voltage Reference

LM4040-N, LM4040Q-N
www.ti.com
SNOS633H – OCTOBER 2000 – REVISED APRIL 2013
10-V LM4040-N Electrical Characteristics
V_R Tolerance Grades 'A' and 'B'; Temperature Grade 'I'
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 and B designate initial
Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2%, respectively.
Symbol
Parameter
Conditions
Typical ⁽¹⁾
LM4040AIM3
LM4040AIZ
Limits ⁽²⁾
LM4040BIM3
LM4040BIZ
Limits ⁽²⁾
Units
Reverse Breakdown Voltage I_R = 150 μA
V_R
Reverse Breakdown Voltage
Tolerance ⁽³⁾
I_R = 150 μA
10.00
±10
±75
V
±20
mV (max)
±85
mV (max)
75
μA
I_RMIN Minimum Operating Current
100
100
μA (max)
103
103
μA (max)
ΔV_R/ΔT
Average Reverse Breakdown
Voltage Temperature
Coefficient ⁽³⁾
I_R = 10 mA
I_R = 1 mA
I_R = 150 μA
±40
±20
±100
±20
0.8
±100
ppm/°C
ppm/°C (max)
ppm/°C
mV
Reverse Breakdown Voltage
ΔV_R/ΔI_R Change with Operating
Current Change⁽⁴⁾
I_RMIN ≤ I_R ≤ 1 mA
1 mA ≤ I_R ≤ 15 mA
1.5
3.5
8.0
12.0
23.0
1.5
mV (max)
3.5
mV (max)
mV
12.0
mV (max)
23.0
mV (max)
Z_R
Reverse Dynamic Impedance
I_R = 1 mA, f = 120 Hz,
I_AC = 0.1 I_R
0.7
1.7
Ω
1.7
Ω (max)
e_N Wideband Noise
I_R = 150 μA
10 Hz ≤ f ≤ 10 kHz
180
μV_rms
ΔV_R
Reverse Breakdown Voltage
Long Term Stability
t = 1000 hrs
T = 25°C ±0.1°C
I_R = 150 μA
120
ppm
V_HYST Thermal Hysteresis⁽⁵⁾
ΔT = −40°C to +125°C
0.08
%
(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 ensured through correlation using Statistical Quality Control
(SQC) methods. The limits are used to calculate 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: ±0.75% = ±0.1% ±100 ppm/°C × 65°C
B-grade: ±0.85% = ±0.2% ±100 ppm/°C × 65°C
C-grade: ±1.15% = ±0.5% ±100 ppm/°C × 65°C
D-grade: ±1.98% = ±1.0% ±150 ppm/°C × 65°C
E-grade: ±2.98% = ±2.0% ±150 ppm/°C × 65°C
The total over-temperature tolerance for the different grades in the extended temperature range where max ΔT = 100 °C is shown
below:
C-grade: ±1.5% = ±0.5% ±100 ppm/°C × 100°C
D-grade: ±2.5% = ±1.0% ±150 ppm/°C × 100°C
E-grade: ±3.5% = ±2.0% ±150 ppm/°C × 100°C
Therefore, as an example, the A-grade 2.5-V LM4040-N has an over-temperature Reverse Breakdown Voltage tolerance of ±2.5V ×
0.75% = ±19 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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