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PDF NJM2748 Data sheet ( Hoja de datos )
| Número de pieza | NJM2748 | |
| Descripción | Low Drift single JFET Input Operational Amplifier | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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NJM2748/2748A
Low Offset, Low Drift single JFET Input
Operational Amplifier
■GENERAL DESCRIPTION
The NJM2748/2748A is a Precision dual JFET input operational
amplifier which includes low input offset voltage: 0.7mV (typ) / 2.0mV
(max) and 6µV/°C typical offset drift.
The NJM2748A is guaranteed 20µV/°C maximum offset drift to
perform a 100% tested.
The NJM2748/2748A have the following features: low bias current of
50pA (typ), high slew rate of 13V/µs (typ).
These features are suitable for signal processing amplifiers of
instrumentation, measurement and industrial applications such as
sensor amplifier, current sensing and sample-and-hold circuit.
■FEATURES
●Input Offset Voltage Drift
●Input Offset Voltage
●Input Bias Current
●Slew Rate
●Operating Voltage
●Voltage Gain
●Bipolar Technology
•Package Outline
■PIN CONFIGURATION
NJM2748: ∆VIO/∆T= 6µV/°C typ.
NJM2748A: ∆VIO/∆T=20µV/°C max.
2.0mV max. @Ta=25°C ~ 85°C
3.0mV max. @Ta= -40°C
IB= 50pA typ. 200pA max. @Ta=25°C
SR=13V/µs typ. @Ta=25°C
Vopr= ±6.0V ~ ±16V
Av=100dB typ.
NJM2748D, NJM2748AD :DIP8
NJM2748M, NJM2748AM :DMP8
■PACKAGE OUTLINE
NJM2748D/2748AD
NJM2748M/2748AM
BALANCE 1
−INPUT A 2
+INPUT A 3
V− 4
(Top View)
8 NC
7 V+
6 OUTPUT
5 BALANCE
NJM2748/2748A
Ver.2007-05-24
-1-
1 page  
NJM2748/2748A
■IMPORTANT CONSIDERATIONS FOR USE OF NJM2748/2748A
•INPUT COMMON MODE VOLTAGE RANGE
In this product, the input offset voltage drift is measured based on the input offset voltage at VICM=0V, and the input voltage
range that satisfies the common mode rejection ratio 76dB is defined as the input common mode voltage range.
As an electric characteristic, VICM=−10V~+10V at Supply Voltage V+/V−=±15V is guaranteed.
It becomes below formula about the input common mode voltage range when the supply voltage changes.
+VICM: (V+ supply) − 5 [V] · · · reference
−VICM: (V− supply) + 5 [V] · · · reference
This figure below is “Input common mode voltage range – Supply voltage characteristics”. (It is not the one to guarantee the
characteristic of the product.)
+ VICM is limited by the absolute maximum rating (V+ supply) within the input common mode voltage range.
Moreover, −VICM tends to rise by lowering of the supply voltage.
Common Mode Input Voltage Range (+VICM)
− Supply Voltage
(Ta=25ºC, CMR=76dB)
1.0
Common Mode Input Voltage Range (−VICM)
− Supply Voltage
(Ta=25ºC, CMR=76dB)
5.0
0.0 4.0
-1.0 3.0
-2.0
5
10 15
Supply Voltage V+/V− [V]
20
2.0
5
10 15
Supply Voltage V+/V− [V]
20
Ver.2007-05-24
-5-
5 Page 
■TYPICAL CHARACTERISTICS
Gain/Phase − Frequency
50 (V+/V−=±15V, 40dBAMP, CL=100pF, Ta=25ºC)
Gain
40
90
45
30 0
20 Phase
-45
10 -90
0 -135
-10
1k
10k
100k
1010M0k
Frequency [Hz]
-180
1100M00k
Voltage Gain − Frequency
10 (V+/V−=±15V, Voltage Follower, RL=2kΩ, Ta=25ºC)
5
0
-5
100M0k
CL=100pF
CL=47pF
CL=10pF
1M
Frequency [Hz]
10M
Voltage Gain − Frequency
10 (V+/V−=±15V, Voltage Follower, RL=2kΩ, CL=100pF)
5
0
-5
100M0k
Ver.2007-05-24
Ta=-40ºC
Ta=25ºC
Ta=85ºC
1M
Frequency [Hz]
10M
NJM2748/2748A
Gain/Phase − Frequency
50 (V+/V−=±6V, 40dBAMP, CL=100pF, Ta=25ºC)
Gain
40
90
45
30 0
20 Phase
-45
10 -90
0 -135
-10
1
10 100 110M00
Frequency [kHz]
-180
11000M00
Voltage Gain − Frequency
10 (V+/V−=±6V, Voltage Follower, RL=2kΩ, Ta=25ºC)
5
0
-5
100M0k
CL=100pF
CL=47pF
CL=10pF
1M
Frequency [Hz]
10M
Voltage Gain − Frequency
10 (V+/V−=±6V, Voltage Follower, RL=2kΩ, CL=100pF)
Ta=-40ºC
5 Ta=25ºC
Ta=85ºC
0
-5
100M0k
1M
Frequency [Hz]
10M
- 11 -
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet NJM2748.PDF ] | |
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