ZHCSEI8C January   2016  – March 2018 OPA197 , OPA2197 , OPA4197

PRODUCTION DATA.  

  1. 1 特性
  2. 2 应用
  3. 3 说明
    1.     Device Images
      1.      OPA197 应用于高压多路复用数据采集系统
  4. 4 修订历史记录
  5. 5 Pin Configuration and Functions
    1.     Pin Functions: OPA197
    2.     Pin Functions: OPA2197 and OPA4197
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: OPA197
    5. 6.5 Thermal Information: OPA2197
    6. 6.6 Thermal Information: OPA4197
    7. 6.7 Electrical Characteristics: VS = ±4 V to ±18 V (VS = 8 V to 36 V)
    8. 6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS = 4.5 V to 8 V)
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input Protection Circuitry
      2. 7.3.2 EMI Rejection
      3. 7.3.3 Phase Reversal Protection
      4. 7.3.4 Thermal Protection
      5. 7.3.5 Capacitive Load and Stability
      6. 7.3.6 Common-Mode Voltage Range
      7. 7.3.7 Electrical Overstress
      8. 7.3.8 Overload Recovery
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 16-Bit Precision Multiplexed Data-Acquisition System
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Slew Rate Limit for Input Protection
      3. 8.2.3 Precision Reference Buffer
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11器件和文档支持
    1. 11.1 器件支持
      1. 11.1.1 开发支持
        1. 11.1.1.1 TINA-TI（免费软件下载）
        2. 11.1.1.2 TI 高精度设计
    2. 11.2 文档支持
      1. 11.2.1 相关文档
    3. 11.3 相关链接
    4. 11.4 接收文档更新通知
    5. 11.5 社区资源
    6. 11.6 商标
    7. 11.7 静电放电警告
    8. 11.8 Glossary
  12. 12机械、封装和可订购信息

封装选项

机械数据 (封装 | 引脚)
散热焊盘机械数据 (封装 | 引脚)
订购信息

6.8 Electrical Characteristics: VS = ±2.25 V to ±4 V (VS = 4.5 V to 8 V)

at TA = 25°C, VCM = VOUT = VS / 2, and RLOAD = 10 kΩ connected to VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Input offset voltage VS = ±2.25 V, VCM = (V+) – 3 V ±5 ±100 µV
(V+) – 3.5 V < VCM< (V+) – 1.5 V See Common-Mode Voltage Range section
VS = ±3 V, VCM = (V+) – 1.5 V ±10 ±100 µV
dVOS/dT Input offset voltage drift VS = ±2.25 V, VCM = (V+) – 3 V TA = –40°C to +125°C ±0.5 ±2.5 µV/°C
VS = ±2.25 V, VCM = (V+) – 1.5 V ±0.8 ±4.5
PSRR Power-supply rejection ratio TA = –40°C to +125°C, VCM = VS / 2 – 0.75 V ±2 µV/V
INPUT BIAS CURRENT
IB Input bias current ±5 ±20 pA
TA = –40°C to +125°C ±5 nA
IOS Input offset current ±2 ±20 pA
TA = –40°C to +125°C ±2 nA
NOISE
En Input voltage noise (V–) – 0.1 V < VCM< (V+) – 3 V, f = 0.1 Hz to 10 Hz 1.30 µVPP
(V+) – 1.5 V < VCM< (V+) + 0.1 V, f = 0.1 Hz to 10 Hz 4
en Input voltage noise density (V–) – 0.1 V < VCM< (V+) – 3 V f = 100 Hz 10.5 nV/√Hz
f = 1 kHz 5.5
(V+) – 1.5 V < VCM< (V+) + 0.1 V f = 100 Hz 32
f = 1 kHz 12.5
in Input current noise density f = 1 kHz 1.5 fA/√Hz
INPUT VOLTAGE
VCM Common-mode voltage range (V–) – 0.1 (V+) + 0.1 V
CMRR Common-mode rejection ratio VS = ±2.25 V,
(V–) – 0.1 V < VCM< (V+) – 3 V		 90 110 dB
TA = –40°C to +125°C 88 104
VS = ±2.25 V,
(V+) – 1.5 V < VCM< (V+)		 94 120
TA = –40°C to +125°C 77 100
VS = ±2.25 V,
(V+) – 3 V < VCM< (V+) – 1.5 V		 See Typical Characteristics
INPUT IMPEDANCE
ZID Differential 100 || 1.6 MΩ || pF
ZIC Common-mode 1 || 6.4 1013Ω || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain VS = ±2.25 V,
(V–) + 0.6 V < VO< (V+) – 0.6 V,
RLOAD = 2 kΩ		 104 126 dB
TA = –40°C to +125°C 100 114
VS = ±2.25 V,
(V–) + 0.3 V < VO< (V+) – 0.3 V,
RLOAD = 10 kΩ		 104 134
TA = –40°C to +125°C 100 120
FREQUENCY RESPONSE
GBW Unity gain bandwidth 10 MHz
SR Slew rate G = 1, 1-V step 14 V/µs
ts Settling time To 0.01% VS = ±3 V, G = 1, 5-V step 1 µs
tOR Overload recovery time VIN× G = VS 200 ns
OUTPUT
VO Voltage output swing from rail Positive rail No load 5 25 mV
RLOAD = 10 kΩ 95 125
RLOAD = 2 kΩ 430 500
Negative rail No load 5 25
RLOAD = 10 kΩ 95 125
RLOAD = 2 kΩ 430 500
ISC Short-circuit current VS = ±2.25 V ±65 mA
CLOAD Capacitive load drive See Typical Characteristics
ZO Open-loop output impedance f = 1 MHz, IO = 0 A, see Figure 26 375 Ω
POWER SUPPLY
IQ Quiescent current per amplifier IO = 0 A 1 1.3 mA
TA = –40°C to +125°C 1.5
TEMPERATURE
Thermal protection(1) 140 °C
(1) For a detailed description of thermal protection, see the Thermal Protection section.
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