BD12730G(2012) Просмотр технического описания (PDF) - ROHM Semiconductor

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производитель

BD12730G
(Rev.:2012)

Low Current Consumption Input/Output Full Swing Operational Amplifier

ROHM Semiconductor 

BD12730G

Datasheet

●Application Information

○NULL method condition for Test Circuit 1

Parameter

VF S1

Input Offset Voltage

VF1 ON

Voltage Gain

VF2

ON

VF3

Common Mode Rejection Ratio VF4

(Input Common-mode

ON

Voltage Range)

VF5

Supply Voltage Rejection Ratio

VF6

ON

VF7

V+, GND, VRL, EK, Vicm Unit: V

S2 S3 V+ GND VRL RL Ω EK Vicm Calculation

ON OFF 5.0 0

- open -2.5 2.5

1

-4.5

ON ON 5.0 0 2.5 2k

2.5

2

-0.5

ON OFF 5.0 0

0

- open -2.5

3

5.0

5.0

ON OFF

0

1.8

- open -2.5 2.5

4

－ Calculation－

1. Input Offset Voltage (Vio)

|VF1|

Vio =

[V]

1+RF/RS

2. Large Signal Voltage Gain (Av)

Av = 20Log ∆EK × (1+RF/RS) [dB]

|VF2-VF3|

3. Common Mode Rejection Ratio (CMRR)

4. Supply Voltage Rejection Ratio (PSRR)

CMRR = 20Log ∆Vicm × (1+RF/RS) [dB]

|VF4 - VF5|

PSRR = 20Log ∆V+ × (1+ RF/RS) [dB]

|VF6 - VF7|

0.1µF

SW1

RS=50Ω Ri=10kΩ

0.1µF

0.1µF

Vicm

RS=50Ω Ri=10kΩ

50kΩ

V+

DUT

RF=50kΩ

500kΩ

EK

Vo

500kΩ

SW3

RL

1000pF

GND

VRL

0.1µF

15V

NULL

VF

-15V

Figure 28. Test circuit 1

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©2012 ROHM Co., Ltd. All rights reserved.

TSZ22111･15･001

12/18

TSZ02201-0RAR1G200600-1-2

30.NOV.2012 Rev.001

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