INA821 datasheet(22/45 Pages) TI1

22 / 45 page

-20

-15

-10

-5

±20

±10

Output Voltage (V)

G = 1

G = 100

C006

-5

-4

-3

-2

-1

±6

±4

±2

Output Voltage (V)

G = 1

G = 100

C006

Output Voltage (V)

VREF = 0 V

VREF = 2.5 V

C006

Output Voltage (V)

VREF = 0 V

VREF = 2.5 V

C006

INA821

SBOS893D – AUGUST 2018 – REVISED JUNE 2020

www.ti.com

Product Folder Links: INA821

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Table 3. INA821 EMIRR for Frequencies of Interest

FREQUENCY

APPLICATION OR ALLOCATION

DIFFERENTIAL

EMIRR

COMMON-MODE

EMIRR

400 MHz

Mobile radio, mobile satellite, space operation, weather, radar, ultrahigh-frequency (UHF)

applications

60 dB

88 dB

900 MHz

Global system for mobile communications (GSM) applications, radio communication, navigation,

GPS (up to 1.6 GHz), GSM, aeronautical mobile, UHF applications

58 dB

60 dB

1.8 GHz

GSM applications, mobile personal communications, broadband, satellite,

L-band (1 GHz to 2 GHz)

66 dB

89 dB

2.4 GHz

802.11b, 802.11g, 802.11n, Bluetooth®, mobile personal communications, industrial, scientific

and medical (ISM) radio band, amateur radio and satellite, S-band (2 GHz to 4 GHz)

73 dB

98 dB

3.6 GHz

Radiolocation, aero communication and navigation, satellite, mobile, S-band

99 dB

111 dB

5 GHz

802.11a, 802.11n, aero communication and navigation, mobile communication, space and

satellite operation, C-band (4 GHz to 8 GHz)

83 dB

91 dB

8.3.3 Input Common-Mode Range

The linear input voltage range of the INA821 input circuitry extends within 2 V of power supplies and maintains

excellent common-mode rejection throughout this range. The common-mode range for the most common

operating conditions are shown in Figure 58 to Figure 61. The common-mode range for other operating

conditions is best calculated using the Common-Mode Input Range Calculator for Instrumentation Amplifiers.

VS = 5 V

G = 1

Figure 58. Input Common-Mode Voltage vs Output Voltage

VS = 5 V

G = 100

Figure 59. Input Common-Mode Voltage vs Output Voltage

VS = ±5 V

VREF = 0 V

Figure 60. Input Common-Mode Voltage vs Output Voltage

VS = ±15 V

VREF = 0 V

Figure 61. Input Common-Mode Voltage vs Output Voltage

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