ZHCSHU3A March 2018 – January 2021 OPA197-Q1 , OPA2197-Q1 , OPA4197-Q1
PRODUCTION DATA
- 1 特性
- 2 应用
- 3 说明
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information: OPA197-Q1
- 6.5 Thermal Information: OPA2197-Q1
- 6.6 Thermal Information: OPA4197-Q1
- 6.7 Electrical Characteristics: VS = ±4 V to ±18 V (VS = 8 V to 36 V)
- 6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS = 4.5 V to 8 V)
- 6.9 Typical Characteristics
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11Device and Documentation Support
- 12Mechanical, Packaging, and Orderable Information
7.3.2 EMI Rejection
The OPAx197-Q1 use integrated electromagnetic
interference (EMI) filtering to reduce the effects of EMI from sources such as
wireless communications and densely-populated boards with a mix of analog signal
chain and digital components. EMI immunity can be improved with circuit design
techniques; the OPAx197-Q1 benefit from these design improvements. Texas Instruments
has developed the ability to accurately measure and quantify the immunity of an
operational amplifier over a broad frequency spectrum extending from 10 MHz
to 6 GHz. Figure 7-4 shows the results of this testing on the OPAx197-Q1. Table 7-1 shows the EMIRR IN+ values for the OPAx197-Q1 at particular frequencies commonly
encountered in real-world applications. Applications listed in Table 7-1 may be centered on or operated near the particular frequency shown. Detailed
information can also be found in the TI application report EMI Rejection Ratio of
Operational Amplifiers available for download from www.ti.com.
Figure 7-4 EMIRR Testing| FREQUENCY | APPLICATION OR ALLOCATION | EMIRR IN+ |
|---|---|---|
| 400 MHz | Mobile radio, mobile satellite, space operation, weather, radar, ultra-high frequency (UHF) applications | 44.1 dB |
| 900 MHz | Global system for mobile communications (GSM) applications, radio communication, navigation, GPS (to 1.6 GHz), GSM, aeronautical mobile, UHF applications | 52.8 dB |
| 1.8 GHz | GSM applications, mobile personal communications, broadband, satellite, L-band (1 GHz to 2 GHz) | 61.0 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) | 69.5 dB |
| 3.6 GHz | Radiolocation, aero communication and navigation, satellite, mobile, S-band | 88.7 dB |
| 5 GHz | 802.11a, 802.11n, aero communication and navigation, mobile communication, space and satellite operation, C-band (4 GHz to 8 GHz) | 105.5 dB |