SBOS407D December   2007  – May 2016 VCA821

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Device Comparison Table
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1  Absolute Maximum Ratings
    2. 7.2  ESD Ratings
    3. 7.3  Recommended Operating Conditions
    4. 7.4  Thermal Information
    5. 7.5  Electrical Characteristics: VS = ±5 V
    6. 7.6  Typical Characteristics: VS = ±5 V, DC Parameters
    7. 7.7  Typical Characteristics: VS = ±5 V, DC and Power-Supply Parameters
    8. 7.8  Typical Characteristics: VS = ±5 V, AVMAX = 6 dB
    9. 7.9  Typical Characteristics: VS = ±5 V, AVMAX = 20 dB
    10. 7.10 Typical Characteristics: VS = ±5 V, AVMAX = 32 dB
  8. Parameter Measurement Information
  9. Detailed Description
    1. 9.1 Overview
    2. 9.2 Feature Description
    3. 9.3 Device Functional Modes
      1. 9.3.1 Maximum Gain of Operation
      2. 9.3.2 Output Current and Voltage
      3. 9.3.3 Input Voltage Dynamic Range
      4. 9.3.4 Output Voltage Dynamic Range
      5. 9.3.5 Bandwidth
      6. 9.3.6 Offset Adjustment
      7. 9.3.7 Noise
        1. 9.3.7.1 Input and ESD Protection
  10. 10Application and Implementation
    1. 10.1 Application Information
      1. 10.1.1 Design-In Tools
        1. 10.1.1.1 Demonstration Boards
        2. 10.1.1.2 Macromodels and Applications Support
        3. 10.1.1.3 Operating Suggestions
        4. 10.1.1.4 Package Considerations
    2. 10.2 Typical Applications
      1. 10.2.1 Wideband Variable-Gain Amplifier Operation Application
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
        3. 10.2.1.3 Application Curve
      2. 10.2.2 Difference Amplifier Application
        1. 10.2.2.1 Design Requirements
        2. 10.2.2.2 Detailed Design Procedure
        3. 10.2.2.3 Application Curve
      3. 10.2.3 Differential Equalizer Application
        1. 10.2.3.1 Design Requirements
        2. 10.2.3.2 Detailed Design Procedure
        3. 10.2.3.3 Application Curve
      4. 10.2.4 Differential Cable Equalizer Application
        1. 10.2.4.1 Design Requirements
        2. 10.2.4.2 Detailed Design Procedure
        3. 10.2.4.3 Application Curve
      5. 10.2.5 AGC Loop Application
        1. 10.2.5.1 Design Requirements
        2. 10.2.5.2 Detailed Design Procedure
    3. 10.3 System Examples
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
    3. 12.3 Thermal Considerations
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Third-Party Products Disclaimer
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Power Supply ±6.5 V
Internal Power Dissipation See Thermal Information
Input Voltage ±VS V
Lead Temperature (soldering, 10 s) 260 °C
Junction Temperature (TJ) 150 °C
Junction Temperature (TJ) Maximum Continuous Operation 140 °C
Storage Temperature (Tstg) –65 125 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±1000
Machine Model ±200
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
Operating voltage 7 10 12 V
Operating temperature –40 25 85 °C

7.4 Thermal Information

THERMAL METRIC(1) VCA821 UNIT
D [SOIC] DGS [VSSOP]
14 PINS 10 PINS
RθJA Junction-to-ambient thermal resistance 90.3 173.1 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 49.8 46.6 °C/W
RθJB Junction-to-board thermal resistance 44.9 94.3 °C/W
ψJT Junction-to-top characterization parameter 13.8 2.2 °C/W
ψJB Junction-to-board characterization parameter 44.6 92.7 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance n/a n/a °C/W
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953.

7.5 Electrical Characteristics: VS = ±5 V

At AVMAX = 20 dB, RF = 402 Ω, RG = 80 Ω, RL = 100 Ω, unless otherwise noted.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TEST LEVEL(3)
AC PERFORMANCE
Small-signal bandwidth G = 6dB, VO = 500mVPP G = 20dB, VO = 500mVPP G = 40dB, VO = 500mVPP 710 MHz C
420 MHz C
170 MHz C
Large-signal bandwidth G = 20dB, VO = 4VPP 320 MHz C
Gain control bandwidth VO = 200mVPP +25° C (1) 240 330 MHz B
0° C to 70° C (2) 235
–40° C to +85° C (2) 235
Bandwidth for 0.1dB flatness G = 20dB, VO = 200mVPP 135 MHz C
Slew rate G = 20dB, VO = 5V Step +25° C (1) 1800 2500 V/μs B
0° C to 70° C (2) 1700
–40° C to +85° C (2) 1700
Rise-and-fall time G = 20dB, VO = 5V Step +25° C (1) 1.5 1.8 ns B
0° C to 70° C (2) 1.9
–40° C to +85° C (2) 1.9
Settling time to 0.01% G = 20dB, VO = 5V Step 11 ns C
Harmonic distortion, 2nd-harmonic VO = 2VPP, f = 20MHz +25° C (1) –64 –66 dBc B
0° C to 70° C (2) –64
–40° C to +85° C (2) –64
Harmonic distortion, 3rd -harmonic VO = 2VPP, f = 20MHz +25° C (1) –61 –63 dBc B
0° C to 70° C (2) –61
–40° C to +85° C (2) –61
Input voltage noise f > 100kHz 6.0 nV/√Hz C
Input current noise f > 100kHz 2.6 pA/√Hz C
GAIN CONTROL
Absolute gain error GMAX = 20dB, VG = 2V +25° C (1) ±0.1 ±0.4 dB A
0° C to 70° C (2) ±0.5
–40° C to +85° C (2) ±0.6
Vctrl0 0.85 V C
VSlope 0.09 V C
Absolute gain error GMAX = 20dB, VG = 1V, (G = 18.06 dB) +25° C (1) ±0.3 ±0.4 dB A
0° C to 70° C (2) ±0.5
–40° C to +85° C (2) ±0.6
Gain at VG = 0.2V Relative to max gain +25° C (1) –26 –24 dB A
0° C to 70° C (2) –24
–40° C to +85° C (2) –23
Gain control bias current +25° C (1) 10 16 μA A
0° C to 70° C (2) 16.6
–40° C to +85° C (2) 16.7
Average gain control bias current drift 0° C to 70° C (2) ±12 nA/°C B
–40° C to +85° C (2) ±12
Gain control input impedance 1.5 || 0.6 MΩ || pF C
DC PERFORMANCE
Input offset voltage G = 20dB, VCM = 0V, VG = 1V +25° C (1) ±4 ±17 mV A
0° C to 70° C (2) ±17.8
–40° C to +85° C (2) ±19
Average input offset voltage drift G = 20dB, VCM = 0V, VG = 1V 0° C to 70° C (2) 30 μV/°C B
–40° C to +85° C (2) 30
Input bias current G = 20dB, VCM = 0V, VG = 1V +25° C (1) 19 25 μA A
0° C to 70° C (2) 29
–40° C to +85° C (2) 31
Average input bias current drift G = 20dB, VCM = 0V, VG = 1V 0° C to 70° C (2) 90 nA/°C B
–40° C to +85° C (2) 90
Input offset current G = 20dB, VCM = 0V, VG = 1V +25° C (1) ±0.5 ±2.5 μA A
0° C to 70° C (2) ±3.2
–40° C to +85° C (2) ±3.5
Average input offset current drift G = 20dB, VCM = 0V, VG = 1V 0° C to 70° C (2) ±16 nA/°C B
–40° C to +85° C (2) ±16
lRG MAX Max current through gain resistance +25° C (1) ±2.6 ±2.55 mA B
0° C to 70° C (2) ±2.55
–40° C to +85° C (2) ±2.5
INPUT
Most positive common mode input voltage RL = 100Ω +25° C (1) +1.6 +1.6 V A
0° C to 70° C (2) +1.6
–40° C to +85° C (2) +1.6
Most negative common mode input voltage RL = 100Ω +25° C (1) –2.1 -2.1 V A
0° C to 70° C (2) –2.1
–40° C to +85° C (2) –2.1
Common-mode rejection ratio VCM = ±0.5V +25° C (1) 65 80 dB A
0° C to 70° C (2) 60
–40° C to +85° C (2) 60
Input impedance, differential 0.9 || 0.6 MΩ || pF C
Input impedance, common-mode 1 || 2 MΩ || pF C
OUTPUT
Output voltage swing RL = 1kΩ +25° C (1) ±3.6 ±3.9 V A
0° C to 70° C (2) ±3.4
–40° C to +85° C (2) ±3.3
RL = 100Ω +25° C (1) ±3.5 –3.3/+3.6 –3.2 V A
0° C to 70° C (2) +3.3 –3.0
–40° C to +85° C (2) +3.2 –2.9
Output current VO = 0V, RL = 10Ω +25° C (1) +60 –55/+90 –50 mA A
0° C to 70° C (2) +50 –42
–40° C to +85° C (2) +45 –38
Output impedance G = +10V/V, f > 100kHz 0.01 Ω C
POWER SUPPLY
Specified operating voltage ±5 V C
Minimum operating voltage ±3.5 V C
Maximum operating voltage +25° C (1) ±6 V A
0° C to 70° C (2) ±6
–40° C to +85° C (2) ±6
Maximum quiescent current VG = 1V +25° C (1) 34 35 mA A
0° C to 70° C (2) 35.5
–40° C to +85° C (2) 36
Minimum quiescent current VG = 1V +25° C (1) 34 32.5 mA A
0° C to 70° C (2) 32
–40° C to +85° C (2) 31.5
–PSRR Power-supply rejection ratio +25° C (1) –61 –68 dB A
0° C to 70° C (2) –59
–40° C to +85° C (2) –58
THERMAL CHARACTERISTICS
Specified operating range, D package –40 to +85 °C C
θ JA Junction-to-ambient thermal resistance VSSOP-10 (DGS) 130 °C/W C
SOIC-14 (D) 80 °C/W C
(1) Junction temperature = ambient for +25°C tested specifications.
(2) Junction temperature = ambient at low temperature limit; junction temperature = ambient +23°C at high temperature limit for over temperature specifications.
(3) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization and simulation. (C) Typical value only for information.

7.6 Typical Characteristics: VS = ±5 V, DC Parameters

At TA = +25°C, RL = 100 Ω, VG = +2 V, and VIN = single-ended input on +VIN with –VIN at ground, unless otherwise noted.
VCA821 tc_dc_vi-rg_bos407.gif Figure 1. Maximum Differential Input Voltage
vs RG
VCA821 tc_dc_rng-vpp_bos407.gif Figure 3. Maximum Gain Adjust Range
vs Peak-to-Peak Output Voltage
VCA821 tc_ng-cg_bos407.gif Figure 5. Gain Error Band
vs Gain Control Voltage
VCA821 tc_dc_rng-rf_bos407.gif Figure 2. Maximum Gain Adjust Range vs RF
VCA821 tc_geb-gcv_bos407.gif Figure 4. Gain Error Band
vs Gain Control Voltage
VCA821 tc_dcpwr_rf-avmax_bos407.gif Figure 6. Recommended RF vs AVMAX

7.7 Typical Characteristics: VS = ±5 V, DC and Power-Supply Parameters

At TA = +25°C, RL = 100 Ω, VG = +2 V, and VIN = single-ended input on +VIN with –VIN at ground, unless otherwise noted.
VCA821 tc_sc-cv_6db_bos407.gif Figure 7. Supply Current vs Control Voltage
(AVMAX = 6 dB)
VCA821 tc_sc-cv_26db_bos407.gif Figure 9. Supply Current vs Control Voltage
(AVMAX = 32 dB)
VCA821 tc_sc-cv_20db_bos407.gif Figure 8. Supply Current vs Control voltage
(AVMAX = 20 dB)
VCA821 tc_dc_drift-tmp_bos407.gif Figure 10. Typical DC Drift vs Temperature

7.8 Typical Characteristics: VS = ±5 V, AVMAX = 6 dB

At TA = 25°C, RL = 100 Ω, RF = 453 Ω, RG = 453 Ω, VG = 2 V, VIN = single-ended input on +VIN with –VIN at ground, and SOIC package, unless otherwise noted.
VCA821 tc_ss_freq_6db_bos407.gif Figure 11. Small-Signal Frequency Response
VCA821 tc_ls_pulse_2v_bos407.gif Figure 13. Large-Signal Pulse Response
VCA821 tc_av2_g_flat_bos407.gif Figure 15. Gain Flatness, Deviation From Linear Phase
VCA821 tc_av2_dist-rl_bos407.gif Figure 17. Harmonic Distortion vs Load Resistance
VCA821 tc_hd-gcv_6db_bos407.gif Figure 19. Harmonic Distortion vs Gain Control Voltage
VCA821 tc_2tone-gcv1_bos407.gif Figure 21. Two-Tone, Third-Order Intermodulation Intercept vs Gain Control Voltage
VCA821 tc_gcf-05v_bos407.gif Figure 23. Gain Control Frequency Response
VCA821 tc_fully_ar1_bos407.gif Figure 25. Fully-Attenuated Response
VCA821 tc_av2_delay-frq_bos407.gif Figure 27. Group Delay vs Frequency
VCA821 tc_av2_frq-cload_bos407.gif Figure 29. Frequency Response vs Capacitive Load
VCA821 tc_av2_noise_in_bos407.gif Figure 31. Input Current Noise Density
VCA821 tc_ss_pulse_250mv_bos407.gif Figure 12. Small-Signal Pulse Response
VCA821 tc_av2_comp_vid_bos407.gif Figure 14. Composite Video dG/dP
VCA821 tc_av2_dist-frq_bos407.gif Figure 16. Harmonic Distortion vs Frequency
VCA821 tc_av2_dist-vo_bos407.gif Figure 18. Harmonic Distortion vs Output Voltage
VCA821 tc_av2_2tone_bos407.gif Figure 20. Two-Tone, Third-Order
Intermodulation Intercept
VCA821 tc_av2_g-gctrl_bos407.gif Figure 22. Gain vs Gain Control Voltage
VCA821 tc_gcp_1v_bos407.gif Figure 24. Gain Control Pulse Response
VCA821 tc_av2_delay-gctrl_bos407.gif Figure 26. Group Delay vs Gain Control Voltage
VCA821 tc_av2_rs-cload_bos407.gif Figure 28. Recommended RS vs Capacitive Load
VCA821 tc_av2_noise_out_bos407.gif Figure 30. Output Voltage Noise Density

7.9 Typical Characteristics: VS = ±5 V, AVMAX = 20 dB

At TA = +25°C, RL = 100 Ω, RF = 402 Ω, RG = 80 Ω, VG = +2 V, and VIN = single-ended input on +VIN with –VIN at ground, unless otherwise noted.
VCA821 tc_ss_freq_20db_bos407.gif Figure 32. Small-Signal Frequency Response
VCA821 tc_ss_pulse_50mv_bos407.gif Figure 34. Small-Signal Pulse Response
VCA821 tc_av10_g_flat_bos407.gif Figure 36. Gain Flatness, Deviation From Linear Phase
VCA821 tc_av10_dist-frq_bos407.gif Figure 38. Harmonic Distortion vs Frequency
VCA821 tc_av10_dist-vo_bos407.gif Figure 40. Harmonic Distortion vs Output Voltage
VCA821 tc_av10_2tone_bos407.gif Figure 42. Two-Tone, Third-Order
Intermodulation Intercept
VCA821 tc_av10_g-gctrl_bos407.gif Figure 44. Gain vs Gain Control Voltage
VCA821 tc_gcp_02v_bos407.gif Figure 46. Gain Control Pulse Response
VCA821 tc_fully_ar2_bos407.gif Figure 48. Fully-Attenuated Response
VCA821 tc_av10_output_odr_bos407.gif Figure 50. Output Limited Overdrive Recovery
VCA821 tc_av10_delay-frq_bos407.gif Figure 52. Group Delay vs Frequency
VCA821 tc_ls_freq_1g_bos407.gif Figure 33. Large-Signal Frequency Response
VCA821 tc_ls_pulse_400mv_bos407.gif Figure 35. Large-Signal Pulse Response
VCA821 tc_av10_noise_out_bos407.gif Figure 37. Output Voltage Noise Density
VCA821 tc_av10_dist-rl_bos407.gif Figure 39. Harmonic Distortion vs Load Resistance
VCA821 tc_hd-gcv_20db_bos407.gif Figure 41. Harmonic Distortion vs Gain Control Voltage
VCA821 tc_2tone-gcv2_bos407.gif Figure 43. Two-Tone, Third-Order Intermodulation Intercept
vs Gain Control Voltage
VCA821 tc_gcf-01v_bos407.gif Figure 45. Gain Control Frequency Response
VCA821 tc_av10_vo_cur-lim_bos407.gif Figure 47. Output Voltage and Current Limitations
VCA821 tc_av10_irg_odr_bos407.gif Figure 49. IRG Limited Overdrive Recovery
VCA821 tc_av10_delay-gctrl_bos407.gif Figure 51. Group Delay vs Gain Control Voltage

7.10 Typical Characteristics: VS = ±5 V, AVMAX = 32 dB

At TA = +25°C, RL = 100 Ω, RF = 402 Ω, RG = 18 Ω, VG = +2 V, VIN = single-ended input on +VIN with –VIN at ground, and SOIC package, unless otherwise noted.
VCA821 tc_ss_freq_26db_bos407.gif Figure 53. Small-Signal Frequency Response
VCA821 tc_ss_pulse_125mv_bos407.gif Figure 55. Small-Signal Pulse Response
VCA821 tc_av40_g_flat_bos407.gif Figure 57. Gain Flatness, Deviation From Linear Phase
VCA821 tc_av40_dist-frq_bos407.gif Figure 59. Harmonic Distortion vs Frequency
VCA821 tc_av40_dist-vo_bos407.gif Figure 61. Harmonic Distortion Output Voltage
VCA821 tc_av40_2tone_bos407.gif Figure 63. Two-Tone, Third-Order
Intermodulation Intercept
VCA821 tc_gain-gcv_bos407.gif Figure 65. Gain vs Gain Control Voltage
VCA821 tc_gcp_50mv_bos407.gif Figure 67. Gain Control Pulse Response
VCA821 tc_av40_irg_odr_bos407.gif Figure 69. IRG Limited Overdrive Recovery
VCA821 tc_av40_delay-gctrl_bos407.gif Figure 71. Group Delay vs
Gain Control Voltage
VCA821 tc_ls_freq_500_bos407.gif Figure 54. Large-Signal Frequency Response
VCA821 tc_ls_pulse_100mv_bos407.gif Figure 56. Large-Signal Pulse response
VCA821 tc_av40_noise_out_bos407.gif Figure 58. Output Voltage Noise Density
VCA821 tc_av40_dist-rl_bos407.gif Figure 60. Harmonic Distortion vs Load Resistance
VCA821 tc_hd-gcv_26db_bos407.gif Figure 62. Harmonic Distortion vs Gain Control Voltage
VCA821 tc_2tone-gcv3_bos407.gif Figure 64. Two-Tone, Third-Order Intermodulation Intercept
vs Gain Control Voltage
VCA821 tc_gcf-10mv_bos407.gif Figure 66. Gain Control Frequency Response
VCA821 tc_fully_ar3_bos407.gif Figure 68. Fully Attenuated Response
VCA821 tc_av40_output_odr_bos407.gif Figure 70. Output Limited Overdrive Recovery
VCA821 tc_av40_delay-frq_bos407.gif Figure 72. Group Delay vs Frequency