INA821 datasheet(23/41 Pages) TI1

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Output Voltage (V)

VREF = 0 V

VREF = 2.5 V

C006

Output Voltage (V)

VREF = 0 V

VREF = 2.5 V

C006

INA821

www.ti.com

SBOS893A – AUGUST 2018 – REVISED DECEMBER 2018

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, Figure 53 and Figure 54. The common-mode range for other

operating conditions is best calculated using the INA common-mode range calculating tool. The INA821 device

operates over a wide range of power supplies and VREF configurations, which provides a comprehensive guide to

common-mode range limits for all possible conditions.

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

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