SBAS840C
July 2020 – December 2022
ADC3541
,
ADC3542
,
ADC3543
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics - Power Consumption
6.6
Electrical Characteristics - DC Specifications
6.7
Electrical Characteristics - AC Specifications ADC3541
6.8
Electrical Characteristics - AC Specifications ADC3542
6.9
Electrical Characteristics - AC Specifications ADC3543
6.10
Timing Requirements
6.11
Typical Characteristics: ADC3541
6.12
Typical Characteristics: ADC3542
6.13
Typical Characteristics: ADC3543
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Analog Input
8.3.1.1
Analog Input Bandwidth
8.3.1.2
Analog Front End Design
8.3.1.2.1
Sampling Glitch Filter Design
8.3.1.2.2
Single Ended Input
8.3.1.2.3
Analog Input Termination and DC Bias
8.3.1.2.3.1
AC-Coupling
8.3.1.2.3.2
DC-Coupling
8.3.1.3
Auto-Zero Feature
8.3.2
Clock Input
8.3.2.1
Single Ended vs Differential Clock Input
8.3.2.2
Signal Acquisition Time Adjust
8.3.3
Voltage Reference
8.3.3.1
Internal voltage reference
8.3.3.2
External voltage reference (VREF)
8.3.3.3
External voltage reference with internal buffer (REFBUF)
8.3.4
Digital Down Converter
8.3.4.1
Digital Filter Operation
8.3.4.2
FS/4 Mixing with Real Output
8.3.4.3
Numerically Controlled Oscillator (NCO) and Digital Mixer
8.3.4.4
Decimation Filter
8.3.4.5
SYNC
8.3.4.6
Output Formatting with Decimation
8.3.4.6.1
Parallel CMOS
8.3.4.6.2
Serialized CMOS Interface
8.3.5
Digital Interface
8.3.5.1
Parallel CMOS Output
8.3.5.2
Serialized CMOS output
8.3.5.2.1
SDR Output Clocking
8.3.5.3
Output Data Format
8.3.5.4
Output Formatter
8.3.5.5
Output Bit Mapper
8.3.5.6
Output Interface/Mode Configuration
8.3.5.6.1
Configuration Example
8.3.6
Test Pattern
8.4
Device Functional Modes
8.4.1
Normal operation
8.4.2
Power Down Options
8.5
Programming
8.5.1
Configuration using PINs only
8.5.2
Configuration Using the SPI Interface
8.5.2.1
Register Write
8.5.2.2
Register Read
8.6
Register Map
8.6.1
Detailed Register Description
9
Application Information Disclaimer
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Input Signal Path
9.2.2.2
Sampling Clock
9.2.2.3
Voltage Reference
9.2.3
Application Curves
9.3
Initialization Set Up
9.3.1
Register Initialization During Operation
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Receiving Notification of Documentation Updates
12.2
Support Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RSB|40
MPQF185C
Thermal pad, mechanical data (Package|Pins)
RSB|40
QFND255H
Orderable Information
sbas840c_oa
sbas840c_pm
1
Features
14-bit 10/25/65 MSPS ADC
Noise floor: –155 dBFS/Hz
Ultra-low power with optimized power scaling:
35 mW (10 MSPS) to 84 mW (65 MSPS)
Latency: 1 clock cycle
INL: ±0.6 LSB; DNL: ±0.1 LSB
Reference: external or internal
Input Bandwidth: 900 MHz (3-dB)
Industrial temperature range: –40°C to +105°C
On-chip digital filter (optional)
Decimation by 2, 4, 8, 16, 32
32-bit NCO
SDR/DDR and Serial CMOS interface
Small footprint: 40-WQFN (5 mm × 5 mm) package
Single 1.8-V supply
Spectral Performance (f
IN
= 10 MHz):
SNR: 79.0 dBFS
SFDR: 87 dBc HD2, HD3
SFDR: 99 dBFS Worst Spur
Spectral Performance (f
IN
= 64 MHz):
SNR: 78.0 dBFS
SFDR: 70 dBc HD2, HD3
SFDR: 91 dBFS Worst Spur