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LM2901DR2G

Quad comparator, 3-36V, 25nA Ibias, SOIC-14, ground CM range, 130mV Vsat, automotive

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Pieza del fabricante：

LM2901DR2G

Paquete：

SOIC-14 (8.75 x 4.00 x 1.50 mm, 1.27mm pitch)

Marca：
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Descripción

Productos

The LM2901DR2G from onsemi is a quad single-supply voltage comparator in a SOIC-14 package. Operating from 3V to 36V with low input bias current and common-mode range to ground, it is designed for level detection and signal conditioning in automotive and industrial systems.

Especificaciones

Canales 4 (quad)
Tensión de alimentación 3 V to 36 V (single) or +/-1.5 V to +/-18 V (split)
Corriente de polarización de entrada 25 nA typical
Tensión de offset de entrada 7 mV max
Output Saturation Voltage 130 mV typical at 4 mA
Response Time 1.3 us typical
Temperatura de funcionamiento -40C to +105C

Características

  • Quad comparator in SOIC-14 with 3V to 36V single or split supply operation
  • 25nA low input bias current for high-impedance sensor interfaces
  • Input common-mode voltage range includes ground for single-supply designs
  • 130mV low output saturation voltage at 4mA for direct logic interface
  • TTL and CMOS compatible open-collector output
  • ESD clamps on inputs increase reliability without affecting operation

Aplicaciones

  • Automotive level detection and low-level sensing
  • Industrial signal conditioning and threshold comparison
  • Zero-crossing detection and window comparator circuits
  • Memory and logic interface applications

The LM2901DR2G from onsemi is a quad single-supply voltage comparator in a SOIC-14 package. The device consists of four independent precision voltage comparators designed to operate from a single 3V to 36V supply or from split supplies of +/-1.5V to +/-18V. The 25nA typical input bias current makes the comparators suitable for high-impedance sensor interfaces without loading the signal source. The input common-mode voltage range extends to ground, enabling true single-supply operation where the inputs can be at or near ground potential. The open-collector output can sink up to 16mA and provides a low 130mV typical saturation voltage at 4mA, allowing direct interface with TTL and CMOS logic levels. The open-collector architecture also enables wired-OR output connections for multi-comparator functions. ESD clamps on the inputs protect against electrostatic discharge without affecting normal device operation. The 1.3us typical response time is adequate for most level detection and signal conditioning applications. The LM2901 is the automotive-grade variant of the industry-standard LM339 comparator family, qualified for operation from -40C to +105C with AEC-Q100 availability (NCV2901).

The LM2901DR2G contains four identical comparator circuits. (1) Comparator Core: Each comparator has inverting (-) and non-inverting (+) inputs and an open-collector output. The comparator amplifies the voltage difference between the two inputs. When the non-inverting input voltage exceeds the inverting input, the output transistor turns off (output high via external pull-up). When the inverting input exceeds the non-inverting input, the output transistor turns on (output low, saturating to approximately 130mV at 4mA). (2) Input Stage: The PNP input stage allows the common-mode voltage range to extend to ground, a key advantage over many op-amps used as comparators. The 25nA input bias current flows out of the input pins. (3) Open-Collector Output: The output can only sink current (pull to ground). An external pull-up resistor is required to establish the high-level output voltage. This allows the output to be pulled up to any voltage up to 36V, independent of the comparator supply voltage, enabling level-shifting functions. (4) Wired-OR: Multiple open-collector outputs can be connected together with a single pull-up resistor to implement OR logic functions.

Pin Nombre Tipo Función
1 OUT2 O Comparator 2 output
2 OUT1 O Comparator 1 output
3 VCC Potencia Positive supply (3-36V)
4 IN1- I Comparator 1 inverting input
5 IN1+ I Comparator 1 non-inverting input
6 IN2- I Comparator 2 inverting input
7 IN2+ I Comparator 2 non-inverting input
8 IN3+ I Comparator 3 non-inverting input
9 IN3- I Comparator 3 inverting input
10 IN4+ I Comparator 4 non-inverting input
11 IN4- I Comparator 4 inverting input
12 GND Suelo Suelo
13 OUT4 O Comparator 4 output
14 OUT3 O Comparator 3 output
  • Automotive level detection and low-level sensing with ground CM range
  • Industrial signal conditioning and threshold comparison at 3-36V
  • Zero-crossing detection and window comparator circuits with open-collector
  • Memory and logic interface applications with 25nA input bias current
Fabricante Número de pieza Paquete Notas
onsemi LM339DR2G SOIC-14 0-70C commercial grade
TI LM2901DR SOIC-14 TI brand equivalent
onsemi NCV2901DR2G SOIC-14 AEC-Q100 automotive
TI LMV339IDR SOIC-14 Low voltage, 2.7-5V
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