SBAS886A October   2020  – May 2022 ADC3641 , ADC3642 , ADC3643

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
    5. 6.5  Electrical Characteristics - Power Consumption
    6. 6.6  Electrical Characteristics - DC Specifications
    7. 6.7  Electrical Characteristics - AC Specifications ADC3641
    8. 6.8  Electrical Characteristics - AC Specifications ADC3642
    9. 6.9  Electrical Characteristics - AC Specifications ADC3643
    10. 6.10 Timing Requirements
    11. 6.11 Typical Characteristics - ADC3641
    12. 6.12 Typical Characteristics - ADC3642
    13. 6.13 Typical Characteristics - ADC3643
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Analog Input
        1. 8.3.1.1 Analog Input Bandwidth
        2. 8.3.1.2 Analog Front End Design
          1. 8.3.1.2.1 Sampling Glitch Filter Design
          2. 8.3.1.2.2 Single Ended Input
          3. 8.3.1.2.3 Analog Input Termination and DC Bias
            1. 8.3.1.2.3.1 AC-Coupling
            2. 8.3.1.2.3.2 DC-Coupling
        3. 8.3.1.3 Auto-Zero Feature
      2. 8.3.2 Clock Input
        1. 8.3.2.1 Single Ended vs Differential Clock Input
        2. 8.3.2.2 Signal Acquisition Time Adjust
      3. 8.3.3 Voltage Reference
        1. 8.3.3.1 Internal voltage reference
        2. 8.3.3.2 External voltage reference (VREF)
        3. 8.3.3.3 External voltage reference with internal buffer (REFBUF)
      4. 8.3.4 Digital Down Converter
        1. 8.3.4.1 DDC MUX
        2. 8.3.4.2 Digital Filter Operation
          1. 8.3.4.2.1 FS/4 Mixing with Real Output
        3. 8.3.4.3 Numerically Controlled Oscillator (NCO) and Digital Mixer
        4. 8.3.4.4 Decimation Filter
        5. 8.3.4.5 SYNC
        6. 8.3.4.6 Output Formatting with Decimation
          1. 8.3.4.6.1 Parallel CMOS
          2. 8.3.4.6.2 Serialized CMOS
      5. 8.3.5 Digital Interface
        1. 8.3.5.1 Parallel CMOS Output
        2. 8.3.5.2 Serialized CMOS output
          1. 8.3.5.2.1 SDR Output Clocking
        3. 8.3.5.3 Output Data Format
        4. 8.3.5.4 Output Formatter
        5. 8.3.5.5 Output Bit Mapper
        6. 8.3.5.6 Output Interface/Mode Configuration
          1. 8.3.5.6.1 Configuration Example
      6. 8.3.6 Test Pattern
    4. 8.4 Device Functional Modes
      1. 8.4.1 Normal operation
      2. 8.4.2 Power Down Options
    5. 8.5 Programming
      1. 8.5.1 Configuration using PINs only
      2. 8.5.2 Configuration using the SPI interface
        1. 8.5.2.1 Register Write
        2. 8.5.2.2 Register Read
    6. 8.6 Register Maps
      1. 8.6.1 Detailed Register Description
  9. 9 Application and Implementation
    1. 9.1 Typical Application
      1. 9.1.1 Design Requirements
      2. 9.1.2 Detailed Design Procedure
        1. 9.1.2.1 Input Signal Path
        2. 9.1.2.2 Sampling Clock
        3. 9.1.2.3 Voltage Reference
      3. 9.1.3 Application Curves
    2. 9.2 Initialization Set Up
      1. 9.2.1 Register Initialization During Operation
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  10. 10Device and Documentation Support
    1. 10.1 Receiving Notification of Documentation Updates
    2. 10.2 Support Resources
    3. 10.3 Trademarks
    4. 10.4 Electrostatic Discharge Caution
    5. 10.5 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

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

6.6 Electrical Characteristics - DC Specifications

Typical values are over the operating free-air temperature range, at TA = 25°C, full temperature range is TMIN = –40°C to TMAX = 105°C, ADC sampling rate = 65 MSPS, 50% clock duty cycle, AVDD, IOVDD = 1.8 V, external 1.6V reference, 5 pF output load, and –1-dBFS differential input, unless otherwise noted
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
No missing codes 14 bits
PSRR FIN = 1 MHz 38 dB
ADC3641 - 10 MSPS: DC ACCURACY
DNL Differential nonlinearity FIN = 1.1 MHz ± 0.1 ± 0.65 LSB
INL Integral nonlinearity FIN = 1.1 MHz ± 0.6 ± 2.5 LSB
VOS_ERR Offset error 8 50 LSB
VOS_DRIFT Offset drift over temperature 0.01 LSB/ºC
GAINERR Gain error External 1.6 V reference 1 %FSR
GAINDRIFT Gain drift over temperature External 1.6 V reference 25 ppm/ºC
GAINERR Gain error Internal reference -2.3 %FSR
GAINDRIFT Gain drift over temperature Internal reference 151 ppm/ºC
Transition Noise 0.45 LSBRMS
ADC3642 - 25 MSPS: DC ACCURACY
DNL Differential nonlinearity FIN = 1.1 MHz ± 0.1 ± 0.65 LSB
INL Integral nonlinearity FIN = 1.1 MHz ± 0.6 ± 2.5 LSB
VOS_ERR Offset error 8 50 LSB
VOS_DRIFT Offset drift over temperature -0.01 LSB/ºC
GAINERR Gain error External 1.6 V reference 1 %FSR
GAINDRIFT Gain drift over temperature External 1.6 V reference 31 ppm/ºC
GAINERR Gain error Internal reference -2.8 %FSR
GAINDRIFT Gain drift over temperature Internal reference 151 ppm/ºC
Transition Noise 0.45 LSBRMS
ADC3643 - 65 MSPS: DC ACCURACY
DNL Differential nonlinearity FIN = 5 MHz -0.35 ± 0.2 0.35 LSB
INL Integral nonlinearity FIN = 5 MHz -1.25 ± 0.6 1.25 LSB
VOS_ERR Offset error 35 0 35 LSB
VOS_DRIFT Offset drift over temperature -1 LSB/ºC
GAINERR Gain error External 1.6 V reference 0.6 %FSR
GAINDRIFT Gain drift over temperature External 1.6 V reference -5 ppm/ºC
GAINERR Gain error Internal reference 0.8 %FSR
GAINDRIFT Gain drift over temperature Internal reference 131 ppm/ºC
Transition Noise 0.45 LSBRMS
ADC ANALOG INPUT (AINP/M, BINP/M)
FS Input full scale Default, differential  2.25 Vpp
VCM Input common mode voltage 0.9 0.95 1.0 V
RIN Differential input resistance FIN = 100 kHz  8 kΩ
CIN Differential input capacitance FIN = 100 kHz  7 pF
VOCM Output common mode voltage 0.95 V
BW Analog input bandwidth (-3dB) 900 MHz
Internal Voltage Reference
VREF Internal reference voltage 1.6 V
VREF Output Impedance 8 Ω
Reference Input Buffer (REFBUF)
External reference voltage 1.2 V
External voltage reference (VREF)
VREF External voltage reference 1.6 V
Input Current 0.3 mA
Input impedance 5.3 kΩ
Clock Input (CLKP/M)
Input clock frequency 0.5 65 MHz
VID Differential input voltage 1 3.6 Vpp
VCM Input common mode voltage 0.9 V
RIN Single ended input resistance to common mode 5 kΩ
CIN Single ended input capacitance 1.5 pF
Clock duty cycle 40 50 60 %
Digital Inputs (RESET, PDN, SCLK, SEN, SDIO)
VIH High level input voltage 1.4 V
VIL Low level input voltage 0.4
IIH High level input current 90 150 uA
IIL Low level input current -150 90
CI Input capacitance 1.5 pF
Digital Output (SDOUT)
VOH High level output voltage ILOAD = -400 uA IOVDD – 0.1 IOVDD V
VOL Low level output voltage ILOAD = 400 uA 0.1
CMOS Interface (DA0:DA6, DB0:DB6)
Output data rate per CMOS output pin 250 MHz
VOH High level output voltage ILOAD = -400 uA IOVDD – 0.1 IOVDD V
VOL Low level output voltage ILOAD = 400 uA 0.1
VIH High level input voltage Input clock (Serial CMOS) IOVDD – 0.1 IOVDD V
VIL Low level input voltage 0.1