LM2902B系列汽车级四运算放大器特性及应用指南
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The TI-LM2902B-Q1, LM2902-Q1, LM2902B-Q1, and LM2902BA-Q1 are industry-standard quad operational amplifiers specifically designed for automotive applications. These amplifiers are AEC Q-100 qualified, with a temperature grade of -40°C to 125°C, making them suitable for use in a wide range of automotive environments. They have a wide supply range of 3V to 36V (LM2902B-Q1 and LM2902BA-Q1), 3V to 32V (LM2902KV and LM2902KAV), and 3V to 26V for all other products.
One of the key features of these amplifiers is their low input offset voltage, with a maximum of 2mV at 25°C for the LM2902BA-Q1 and LM2902KAV, 3mV for the LM2902B-Q1, and 7mV for other models. This low input offset voltage ensures accurate and reliable performance in automotive applications where precision is critical.
Additionally, these amplifiers have high ESD ratings, with a device HBM ESD classification of 2 and device CDM ESD classification of C5. This protects the amplifiers from damage due to electrostatic discharge, ensuring their durability and longevity in automotive environments.
Overall, the TI-LM2902B-Q1, LM2902-Q1, LM2902B-Q1, and LM2902BA-Q1 quad operational amplifiers are ideal for automotive applications due to their wide supply range, low input offset voltage, and high ESD ratings. They provide accurate and reliable performance in a variety of automotive systems, making them a top choice for automotive engineers looking for high-quality operational amplifiers.
6.5 Electrical Characteristics - LM2902B-Q1 and LM2902BA-Q1
For V
S
= (V+) – (V–) = 5 V to 36 V (±2.5 V to ±18 V), at T
A
= 25°C, V
CM
= V
OUT
= V
S
/ 2, and R
L
= 10k connected to V
S
/ 2
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
V
OS
Input offset voltage
LM2902B-Q1
±0.3 ±3.0
mV
T
A
= –40°C to 125°C ±4.0
LM2902BA-Q1
±0.3 ±2
T
A
= –40°C to 125°C 2.5
dV
OS
/dT Input offset voltage drift R
S
= 0 Ω T
A
= –40°C to 125°C ±7 μV/°C
PSRR
Input offset voltage versus
power supply
65 100 dB
Channel separation f = 1 kHz to 20 kHz 120 dB
INPUT VOLTAGE RANGE
V
CM
Common-mode voltage
range
V
S
= 3 V to 36 V V– (V+) – 1.5
V
V
S
= 5 V to 36 V T
A
= –40°C to 125°C V– (V+) – 2
CMRR
Common-mode rejection
ratio
(V–) ≤ V
CM
≤ (V+) – 1.5 V V
S
= 3 V to 36 V 70 80
dB
(V–) ≤ V
CM
≤ (V+) – 2 V V
S
= 5 V to 36 V T
A
= –40°C to 125°C 65 80
INPUT BIAS CURRENT
I
B
Input bias current
-10 -35
nA
T
A
= –40°C to 125°C -50
dI
OS
/dT Input offset current drift T
A
= –40°C to 125°C 10 pA/°C
I
OS
Input offset current
±0.5 ±4
nA
T
A
= –40°C to 125°C ±5
dI
OS
/dT Input offset current drift T
A
= –40°C to 125°C 10 pA/°C
NOISE
E
N
Input voltage noise f = 0.1 to 10 Hz 3 μV
PP
e
N
Input voltage noise density R
S
= 100 Ω, V
I
= 0 V, f = 1 kHz (see Figure 8) 35 nV/√Hz
INPUT IMPEDANCE
Z
ID
Differential 10 || 0.1 MΩ || pF
Z
ICM
Common-mode 4 || 1.5 GΩ || pF
OPEN-LOOP GAIN
A
OL
Open-loop voltage gain
V
S
= 15 V, V
O
= 1 V to 11 V, R
L
≥ 2 kΩ, connected to
(V-)
50 100
V/mV
T
A
= –40°C to 125°C 25
FREQUENCY RESPONSE
GBW Gain-bandwidth product R
L
= 1 MΩ, C
L
= 20 pF (see Figure 7) 1.2 MHz
SR Slew rate R
L
= 1 MΩ, C
L
= 30 pF, V
I
= ±10 V (see Figure 7) 0.5 V/μs
Θ
m
Phase margin G = + 1, R
L
= 10kΩ, C
L
= 20 pF 56 °
t
S
Settling time To 0.1%, V
S
= 5 V, 2-V Step , G = +1, C
L
= 100 pF 4 μs
Overload recovery time V
IN
× gain > V
S
10 μs
THD+N
Total harmonic distortion +
noise
G = + 1, f = 1 kHz, V
O
= 3.53 V
RMS
, V
S
= 36V, R
L
= 100k, I
OUT
≤ 50µA, BW = 80 kHz 0.001%
OUTPUT
V
O
Voltage output swing from
rail
Positive Rail (V+)
I
OUT
= -50 µA 1.35 1.5 V
V
O
I
OUT
= -1 mA 1.4 1.6 V
V
O
I
OUT
= -5 mA 1.5 1.75 V
V
O
Negative Rail (V-)
I
OUT
= 50 µA 100 150 mV
V
O
I
OUT
= 1 mA 0.75 1 V
V
O
V
S
= 5 V, RL ≤ 10 kΩ
connected to (V–)
T
A
= –40°C to 125°C 5 20 mV
I
O
Output current
V
S
= 15 V; V
O
= V-; V
ID
= 1 V Source
-20 -30 mA
T
A
= –40°C to 125°C -10 mA
V
S
= 15 V; V
O
= V+; V
ID
= -1
V
Sink
10 20 mA
T
A
= –40°C to 125°C 5 mA
V
ID
= -1 V; V
O
= (V-) + 200 mV 50 85 μA
I
SC
Short-circuit current V
S
= 20 V, (V+) = 10 V, (V-) = -10 V, V
O
= 0 V ±40 ±60 mA
C
LOAD
Capacitive load drive 100 pF
LM2902-Q1, LM2902B-Q1, LM2902BA-Q1
SGLS178F – AUGUST 2003 – REVISED MAY 2022
www.ti.com
6 Submit Document Feedback
Copyright © 2022 Texas Instruments Incorporated
Product Folder Links: LM2902-Q1 LM2902B-Q1 LM2902BA-Q1
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