SBOS859B March   2018  – July 2018 INA1620

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      INA1620 Simplified Internal Schematic
      2.      FFT: 1 kHz, 32-Ω Load, 50 mW
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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
    5. 6.5 Electrical Characteristics:
    6. 6.6 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 Matched Thin-Film Resistor Pairs
      2. 7.3.2 Power Dissipation
      3. 7.3.3 Thermal Shutdown
      4. 7.3.4 EN Pin
      5. 7.3.5 GND Pin
      6. 7.3.6 Input Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Output Transients During Power Up and Power Down
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Noise Performance
      2. 8.1.2 Resistor Tolerance
      3. 8.1.3 EMI Rejection
      4. 8.1.4 EMIRR +IN Test Configuration
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
    3. 8.3 Other Application Examples
      1. 8.3.1 Preamplifier for Professional Microphones
  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 (Free Software Download)
        2. 11.1.1.2 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 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

6.5 Electrical Characteristics:

at TA = 25°C, VS = ±2 V to ±18 V, VCM = VOUT = midsupply, and RL = 1 kΩ (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO PERFORMANCE
THD+N Total harmonic distortion + noise G = 1, f = 1 kHz, VOUT = 3.5 VRMS, RL = 2 kΩ,
80-kHz measurement bandwidth		 0.000025%
–132 dB
G = 1, f = 1 kHz, VOUT = 3.5 VRMS, RL = 600 Ω,
80-kHz measurement bandwidth		 0.000025%
–132 dB
G = 1, f = 1 kHz, POUT = 10 mW, RL = 128 Ω,
80-kHz measurement bandwidth		 0.000071%
–123 dB
G = 1, f = 1 kHz, POUT = 10 mW, RL = 32 Ω,
80-kHz measurement bandwidth		 0.000158%
–116 dB
G = 1, f = 1 kHz, POUT = 10 mW, RL = 16 Ω,
80-kHz measurement bandwidth		 0.000224%
–113 dB
IMD Intermodulation distortion SMPTE/DIN two-tone, 4:1 (60 Hz and 7 kHz),
G = 1, VO = 3 VRMS, RL = 2 kΩ, 90-kHz measurement bandwidth		 0.000018%
–135 dB
CCIF twin-tone (19 kHz and 20 kHz), G = 1,
VO = 3 VRMS, RL = 2 kΩ, 90-kHz measurement bandwidth		 0.000032%
–130 dB
FREQUENCY RESPONSE
GBW Gain-bandwidth product G = 1000 32 MHz
G = 1 8
SR Slew rate G = –1 10 V/μs
Full-power bandwidth(1) VO = 1 VP 1.6 MHz
Overload recovery time G = –10 300 ns
Channel separation (dual) f = 1 kHz 140 dB
EMI filter corner frequency 500 MHz
NOISE
Input voltage noise f = 20 Hz to 20 kHz 2.1 μVPP
en Input voltage noise density(2) f = 10 Hz 6.5 nV/√Hz
f = 100 Hz 3.5
f = 1 kHz 2.8
In Input current noise density f = 10 Hz 1.6 pA/√Hz
f = 1 kHz 0.8
OFFSET VOLTAGE
VOS Input offset voltage ±0.1 ±1 mV
TA = –40°C to 125°C ±1.2
dVOS/dT Input offset voltage drift(2) TA = –40°C to 125°C -0.5 ±2.5 μV/°C
PSRR Power-supply rejection ratio 0.1 3 μV/V
INPUT BIAS CURRENT
IB Input bias current 1.2 2 μA
TA = –40°C to 125°C(2) 2.2
IOS Input offset current ±10 ±100 nA
TA = –40°C to 125°C(2) ±140
INPUT VOLTAGE RANGE
VCM Common-mode voltage range (V–) + 1.5 (V+) – 1 V
CMRR Common-mode rejection ratio (V–) + 1.5 V ≤ VCM ≤ (V+) – 1 V, TA = –40°C to 125°C, VS = ±18 V 108 127 dB
INPUT IMPEDANCE
Differential 60k || 0.8 Ω || pF
Common-mode 500M || 0.9 Ω || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain (V–) + 2 V ≤ VO ≤ (V+) – 2 V, RL = 32 Ω, VS = ± 5 V 114 120 dB
(V–) + 1.5 V ≤ VO ≤ (V+) – 1.5 V, RL = 600 Ω, VS = ± 18 V 120 136
OUTPUT
VO Voltage output swing from rail Positive rail No load 800 mV
RL = 600 Ω 1000
Negative rail No load 800
RL = 600 Ω 1000
IOUT Output current Figure 38 mA
ZO Open-loop output impedance Figure 40 Ω
ISC Short-circuit current VS = ±18 V +145 / –130 mA
CLOAD Capacitive load drive Figure 24 pF
ENABLE PIN
VIH Logic high threshold 0.82 V
TA = –40°C to 125°C(2) 0.95
VIL Logic low threshold 0.78 V
TA = –40°C to 125°C(2) 0.65
IIH Input current VEN = 1.8 V 1.5 μA
RESISTOR PAIRS
Resistor ratio matching(3) Resistors in same pair 0.004% 0.02%
TA = –40°C to 125°C(2) 0.023%
Resistor ratio matching temperature coefficient Resistors in same pair ±0.07 ±0.15 ppm/°C
Individual resistor value 0.84 1 1.15 kΩ
Individual resistor temperature coefficient 2 20 ppm/°C
POWER SUPPLY
IQ Quiescent current
(per channel)		 VEN = 2 V, IOUT = 0 A 2.6 3.3 mA
TA = –40°C to 125°C(2) 4.2
VEN = 0 V, IOUT = 0 A 5 10 μA
(1) Full-power bandwidth = SR / (2π × VP), where SR = slew rate.
(2) Specified by design and characterization.
(3) Resistor ratio matching refers to the matching between the two 1-kΩ resistors in each resistor pair. There are four pairs on each INA1620: RXA, RXB, RXC and RXD, where X is the terminal connection number.  See Resistor Tolerance  for more details.