LM4040CIM3-3.0

Part: LM4040-N, LM4040-N-Q1 — Texas Instruments

Type: Precision Micropower Shunt Voltage Reference

Description: The LM4040-N is a precision shunt voltage reference available in subminiature packages, offering fixed reverse breakdown voltages from 2.048 V to 10 V, with a wide operating current range of 60 μA to 15 mA and output voltage tolerance as low as ±0.1% (A Grade).

Operating Conditions:

• Operating current: 60 μA to 15 mA (for 2.0V, 2.5V, 3.0V versions)
• Operating temperature: -40°C to +85°C (Industrial), -40°C to +125°C (Extended)

Absolute Maximum Ratings:

• Max reverse current: 20 mA
• Max forward current: 10 mA
• Max storage temperature: -65 to 150 °C

Key Specs:

• Reverse Breakdown Voltage (LM4040-N-2.0, I R = 100 μA): 2.048 V
• Output Voltage Tolerance (A Grade, 25°C): ±0.1% (Maximum)
• Low Output Noise (10 Hz to 10 kHz, I R = 100 μA): 35 μVrms (Typical)
• Minimum Operating Current (LM4040-N-2.0, 25°C): 45 μA (Typical), 60 μA (Max)
• Average Reverse Breakdown Voltage Temperature Coefficient (LM4040-N-2.0, I R = 1 mA, 25°C): ±15 ppm/°C (Typical)
• Reverse Dynamic Impedance (LM4040-N-2.0, I R = 1 mA, f = 120 Hz): 0.3 Ω (Typical), 0.8 Ω (Max)
• Thermal Hysteresis (LM4040-N-2.0, ΔT = -40°C to 125°C): 0.08% (Typical)

Features:

• Small Packages: SOT-23, TO-92, and SC70
• No Output Capacitor Required
• Tolerates Capacitive Loads
• Fixed Reverse Breakdown Voltages of 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
• Low Temperature Coefficient: 100 ppm/°C (Maximum)
• AEC Q-100 Grades 1 and 3 Available

Applications:

• Portable, Battery-Powered Equipment
• Data Acquisition Systems
• Instrumentation
• Process Controls
• Energy Management
• Product Testing
• Automotives
• Precision Audio Components

Package:

• TO-92 (3 pins)
• SC70 (5 pins)
• SOT-23 (3 pins)

• 1 · SOT-23 AEC Q-100 Grades 1 and 3 Available
• Small Packages: SOT-23, TO-92, and SC70
• No Output Capacitor Required
• Tolerates Capacitive Loads
• Fixed Reverse Breakdown Voltages of 2.048 V, 2.5 V, 3 V, 4.096 V, 5 V, 8.192 V, and 10 V
• Key Specifications (2.5-V LM4040-N)
• -Output Voltage Tolerance (A Grade, 25°C): ±0.1% (Maximum)
• -Low Output Noise (10 Hz to 10 kHz): 35 μ Vrms (Typical)
• -Wide Operating Current Range: 60 μ A to 15 mA
• -Industrial Temperature Range: -40°C to +85°C
• -Extended Temperature Range: -40°C to +125°C
• -Low Temperature Coefficient: 100 ppm/°C (Maximum)

• Portable, Battery-Powered Equipment
• Data Acquisition Systems
• Instrumentation
• Process Controls
• Energy Management
• Product Testing
• Automotives
• Precision Audio Components

1

LM4040-N, LM4040-N-Q1

SNOS633K -OCTOBER 2000-REVISED JUNE 2016

all other limits TA = TJ = 25°C. The grades A and B designate initial Reverse Breakdown Voltage tolerances of ±0.1% and ±0.2%, respectively.

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 overtemperature tolerance for the different grades in the extended temperature range where max Δ T = 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 overtemperature Reverse Breakdown Voltage tolerance of ±2.5 V × 0.75% = ±19 mV.

(3) 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.

(4) 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.

over operating free-air temperature range (unless otherwise noted) (1)(2)

over operating free-air temperature range (unless otherwise noted) (1)(2)