SBOS427F June   2017  – March 2021 OPA145 , OPA2145

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  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: OPA145
    5. 6.5 Thermal Information: OPA2145
    6. 6.6 Electrical Characteristics: VS = 4.5 V to 36 V; ±2.25 V to ±18 V
    7. 6.7 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 Capacitive Load and Stability
      2. 7.3.2 Output Current Limit
      3. 7.3.3 Noise Performance
      4. 7.3.4 Basic Noise Calculations
      5. 7.3.5 Phase-Reversal Protection
      6. 7.3.6 Electrical Overstress
      7. 7.3.7 EMI Rejection
      8. 7.3.8 EMIRR +IN Test Configuration
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 16-Bit, 100-kSPS, Fully Differential Transimpedance Imaging and Measurement
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI™ SImulation Software (Free Download)
        2. 11.1.1.2 WEBENCH Filter Designer Tool
        3. 11.1.1.3 TI Precision Designs
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Support Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6.6 Electrical Characteristics: VS = 4.5 V to 36 V; ±2.25 V to ±18 V

at TA = 25°C, RL = 10 kΩ connected to midsupply, and VCM = VOUT = midsupply (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Offset voltage, RTI VS = ±18 V ±40 ±150 μV
VS = ±18 V, TA = 0°C to +85°C ±280
VS = ±18 V, TA = –40°C to +125°C ±350
dVOS/dT Drift VS = ±18 V, TA = 0°C to +85°C,
OPA145ID and OPA145IDGK packages		 ±0.4 ±1 μV/°C
VS = ±18 V, TA = 0°C to +85°C,
OPA145IDBV package 		±0.4 ±1.2
VS = ±18 V, TA = –40°C to +125°C,
OPA145ID and OPA145IDGK packages		 ±0.5 ±1.4
VS = ±18 V, TA = –40°C to +125°C,
OPA145IDBV package		 ±0.5 ±1.5
VS = ±18 V, TA = 0°C to +85°C,
OPA2145		 ±0.15 ±0.8
VS = ±18 V, TA = –40°C to +125°C,
OPA2145		 ±0.2 ±1
PSRR Power-supply rejection ratio VS = ±2.25 V to ±18 V,
OPA145ID and OPA2145 packages 		 ±0.06 ±0.3 μV/V
VS = ±2.25 V to ±18 V,
OPA145IDGK and OPA145IDBV packages		 ±0.06 ±0.5
VS = ±2.25 V to ±18 V,
TA = –40°C to +125°C, OPA145		 ±2
VS = ±2.25 V to ±18 V,
TA = –40°C to +125°C, OPA2145		 ±0.65
INPUT BIAS CURRENT
IB Input bias current ±2 ±10 pA
TA = 0°C to +85°C ±600
TA = –40°C to +125°C ±10 nA
IOS Input offset current ±2 ±10 pA
TA = 0°C to +85°C ±600
TA = –40°C to +125°C ±10 nA
NOISE
Input voltage noise f = 0.1 Hz to 10 Hz 320 nVPP
f = 0.1 Hz to 10 Hz 60 nVRMS
en Input voltage noise density f = 10 Hz 9 nV/√Hz
f = 100 Hz 7.2
f = 1 kHz 7
In Input current noise density f = 1 kHz 0.8 fA/√Hz
INPUT VOLTAGE RANGE
VCM Common-mode voltage range TA = –40°C to +125°C (V–) –0.1 (V+)–3.5 V
CMRR Common-mode rejection ratio VS = ±18 V,
VCM = (V–) –0.1 V to (V+) – 3.5 V		 126 140 dB
VS = ±18 V,
VCM = (V–) –0.1 V to (V+) – 3.5 V,
TA = –40°C to +125°C		 118
INPUT IMPEDANCE
Differential 1013 || 5 Ω || pF
Common-mode VCM = (V–) –0.1 V to (V+) –3.5 V 1013 || 4.3
OPEN-LOOP GAIN
AOL Open-loop voltage gain VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 10 kΩ, OPA145ID package only		 118 123 dB
VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 10 kΩ, OPA145IDGK and OPA145IDBV packages		 110 123
VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 10 kΩ, OPA2145		 114 123
VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 2 kΩ		 106 110
VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 2 kΩ, OPA2145		 104 110
VO = (V–) + 0.35 V to (V+) – 0.35 V,
RL = 2 kΩ, TA = –40°C to +125°C		 104
FREQUENCY RESPONSE
BW Gain bandwidth product 5.5 MHz
SR Slew rate 20 V/μs
Settling time 12 bits 10-V step, G = +1 1.6 μs
16 bits 10-V step, G = +1 6
THD+N Total harmonic distortion and noise 1 kHz, G = +1, VO = 3.5 VRMS 0.0001%
Overload recovery time 600 ns
OUTPUT
Linear output voltage swing range RL = 10 kΩ, AOL ≥ 108 dB,
TA = –40°C to +125°C,
see Figure 6-24 and Figure 6-25 		(V–) + 0.1 (V+) – 0.1 V
RL = 2 kΩ, AOL ≥ 108 dB,
TA = –40°C to +125°C,
see Figure 6-24 and Figure 6-25 		(V–) + 0.3 (V+) – 0.3
VO Voltage output swing from rail RL = 10 kΩ 75 mV
RL = 10 kΩ, OPA2145 80
RL = 10 kΩ, TA = –40°C to +125°C 90
RL = 2 kΩ 210
RL = 2 kΩ, OPA2145 230
RL = 2 kΩ,TA = –40°C to +125°C,
OPA145ID		 250
RL = 2 kΩ,TA = –40°C to +125°C,
OPA145IDGK and OPA145IDBV packages, OPA2145		 350
ISC Short-circuit current ±20 mA
CLOAD Capacitive load drive See Figure 6-27
RO Open-loop output impedance f = 1 MHz, IO = 0 mA (see Figure 6-26) 150 Ω
POWER SUPPLY
IQ Quiescent current (per amplifier) IO = 0 mA 445 475 µA
TA = 0°C to +85°C 590
TA = –40°C to +125°C 655