Back to List

Bare Die Product Detail: LS840

N-Channel Dual Monolithic:
Monolithic Dual N-Channel JFET amplifier - Low noise, low drift, low capacitance. The LS840 features low noise, tight offset voltage and low drift & is targeted for use in a wide range of precision instrumentation applications.

LS840 features low noise, low drift, low capacitance, low offset voltage this device is also a replacement for this device is a replacement for Interfet, Intersil, Motorola, National / Fairchild, Philips, Vishay / Siliconix 2N5545.

Features:

Low drift over temperature ≤ 5µV/°C
Low leakage I_G 10pA (TYP)
Low noise e_n 8nV/√Hz (TYP)
Low offset voltage |V_GS1-V_GS2| 2mV (TYP)

Applications:

Wideband Differ°Ctial Amplifiers
High-speed temperature compensated single-ended input amplifiers
High-speed comparators
Impedance converters
Vibration detectors

Test conditions:

BV_GSS -60V @ I_G = -1 nA, V_DS = 0V
I_GSS(MAX) -100 pA @ V_GD = 20V, V_DS = 0V
|V_GS1-V_GS2|_(MAX) 5mV @ V_DG = 20V, I_D = 200 µA
∆|V_GS1-V_GS2|/∆T 5 µV°C @ V_GD = 20V, I_D = 200µA, -55°C to +125°C
V_P(MIN) -1V @ V_DS = 20V, I_D = 1 nA
V_P(MAX) -4.5V @ V_DS = 20V, I_D = 1 nA
I_DSS(MIN) 0.5mA @ V_DS = 20V, V_GS = 0V
I_DSS(MAX) 5mA @ V_DS = 20V, V_GS = 0V
G_fs(MIN) 1000µS @ V_DG = 20V, V_GS = 0V, f = 1kHz
e_n(TYP) 10nV/√Hz @ V_DS = 20V, I_D = 200µA, f = 1kHz, NBW = 1Hz
C_ISS(MAX) 10pF @ V_DS = 20V, I_D = 200µA, V_GS = 0V
C_RSS(MAX) 5pF @ V_DS = 20V, V_GS = 0V, I_D = 200µA

Vendor:
Linear Systems
Electrical Datasheet

Die Physical Data:
Footprint: 0.640mm² (992mil²)
Request Pad Layout

Product Families: Used for this device are tabulated below.

N-Channel Dual Monolithic

Functional:

Type: Low Noise

Specification:

BV_GSS: -60V
I_GSS: -100pA
|V_GS1-V_GS2|: 5mV
∆|V_GS1-V_GS2|/∆T: 5µV/°C
V_{GS(OFF) MIN}: -1.00V
V_{GS(OFF) MAX}: n/a
I_DSS(MIN): 0.50mA
I_DSS(MAX): 5.0mA
g_fs(MIN): 1,000µS
e_n: 10.0nV√Hz
C_ISS(MAX): 10pF
C_RSS(MAX): 5.0pF

Other Detail: Important information for this device is tabulated below.

Traffic light setting for Minimum Order Quantity indicates the following:

Green:Available from stock or at low factory MOQ.
Amber: Available on factory order with MOQ.
Red: High factory MOQ may apply, please ask for details.

Traffic light setting for High Reliability indicates the following:

Green: This bare die is specified and tested for use in high reliability applications.
Amber: This bare die can meet higher reliability specifications with additional testing & qualification, please ask for details.
Red: This bare die is not specified or specifically designed for use in high reliability applications.

Traffic light setting for Space Grade indicates the following:

Green: This bare die is qualified for space applications or has space level qualification data, please ask for details.
Amber: This bare die can be specified for space applications with additional testing and qualification, please ask for details.
Red: Suitability of this bare die for space applications is unknown and requires further qualification, please ask for details.