BA2902YFV-CE2 View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BA2902YFV-CE2

Automotive Ground Sense Operational Amplifiers

ROHM Semiconductor 

BA2904Yxxx-C, BA2902Yxx-C

Datasheet

●Application Information

NULL method condition for Test circuit1

VCC, VEE, EK, Vicm Unit: V

Parameter

VF S1 S2 S3 VCC VEE EK Vicm calculation

Input Offset Voltage

VF1 ON ON OFF 5 to 30 0 -1.4 0

1

Input Offset Current

VF2 OFF OFF OFF 5

0 -1.4 0

2

Input Bias Current

VF3 OFF ON

OFF 5

0 -1.4 0

3

VF4 ON OFF

Large Signal Voltage Gain

VF5

15

0 -1.4 0

ON ON ON

4

VF6

15

0 -11.4 0

Common-mode Rejection Ratio

VF7

(Input common-mode Voltage Range) VF8

ON

ON OFF

5

5

0 -1.4 0

0 -1.4 3.5

5

Power Supply Rejection Ratio

VF9

5

0 -1.4 0

ON ON OFF

6

VF10

30

0 -1.4 0

- Calculation -

1. Input Offset Voltage (Vio)

Vio  VF1

[V]

1+ RF / RS

2. Input Offset Current (Iio)

VF2 - VF1

Iio 

[A]

0.1µF

Ri ×(1+ RF / RS)

3. Input Bias Current (Ib)

VF4 - VF3

Ib 

[A]

2×Ri× (1+ RF / RS)

SW1

4. Large Signal Voltage Gain (Av)

RS=50Ω Ri=10kΩ

Av  20 ×Log ΔEK ×(1+RF/RS) [dB]

VF5 - VF6

5. Common-mode Rejection Ration (CMRR)

RS=50Ω Ri=10kΩ

Vicm

CMRR  20×Log ΔVicm×(1+RF/RS) [dB]

50kΩ

SW2

VF8 - VF7

VCC

DUT

RF=50kΩ

500kΩ

EK

Vo

500kΩ

SW3

RL

1000pF

VEE

0.1µF

15V

NULL

VF

-15V

6. Power supply rejection ratio (PSRR)

PSRR  20×Log ΔVcc ×(1+RF/RS) [dB]

VF10 - VF9

Figure . 52 Test circuit1 (one channel only)

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TSZ22111･15･001

21/27

TSZ02201-0RAR1G200110-1-2

21.Jan.2013 Rev.002

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