SLVSF29A
October 2019 – March 2020
TPS8804
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Application
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
Table 1.
Absolute Maximum Ratings
6.1
ESD Ratings
Table 2.
Recommended Operating Conditions
6.2
Thermal Information
Table 3.
Electrical Characteristics
7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
System Power-up
8.3.2
LDO Regulators
8.3.2.1
Power LDO Regulator
8.3.2.2
Internal LDO Regulator
8.3.2.3
Microcontroller LDO Regulator
8.3.3
Photo Chamber AFE
8.3.3.1
Photo Input Amplifier
8.3.3.2
Photo Gain Amplifier
8.3.4
LED Driver
8.3.4.1
LED Current Sink
8.3.4.2
LED Voltage Supply
8.3.5
Carbon Monoxide Sensor AFE
8.3.5.1
CO Transimpedance Amplifier
8.3.5.2
CO Connectivity Test
8.3.6
SLC Interface Transmitter and Receiver
8.3.6.1
SLC Transmitter
8.3.6.2
SLC Receiver
8.3.7
AMUX
8.3.8
Analog Bias Block and 8 MHz Oscillator
8.3.9
Interrupt Signal Alerts
8.4
Device Functional Modes
8.4.1
Fault States
8.4.1.1
MCU LDO Fault
8.4.1.2
Over-Temperature Fault
8.5
Programming
8.6
Register Maps
8.6.1
REVID Register (Offset = 0h) [reset = 0h]
Table 8.
REVID Register Field Descriptions
8.6.2
STATUS1 Register (Offset = 1h) [reset = 0h]
Table 9.
STATUS1 Register Field Descriptions
8.6.3
STATUS2 Register (Offset = 2h) [reset = 0h]
Table 10.
STATUS2 Register Field Descriptions
8.6.4
MASK Register (Offset = 3h) [reset = 0h]
Table 11.
MASK Register Field Descriptions
8.6.5
CONFIG1 Register (Offset = 4h) [reset = 20h]
Table 12.
CONFIG1 Register Field Descriptions
8.6.6
CONFIG2 Register (Offset = 5h) [reset = 0h]
Table 13.
CONFIG2 Register Field Descriptions
8.6.7
ENABLE1 Register (Offset = 6h) [reset = 0h]
Table 14.
ENABLE1 Register Field Descriptions
8.6.8
ENABLE2 Register (Offset = 7h) [reset = 0h]
Table 15.
ENABLE2 Register Field Descriptions
8.6.9
CONTROL Register (Offset = 8h) [reset = 0h]
Table 16.
CONTROL Register Field Descriptions
8.6.10
GPIO_AMUX Register (Offset = Bh) [reset = 0h]
Table 17.
GPIO_AMUX Register Field Descriptions
8.6.11
COSW Register (Offset = Ch) [reset = 0h]
Table 18.
COSW Register Field Descriptions
8.6.12
CO Register (Offset = Dh) [reset = 0h]
Table 19.
CO Register Field Descriptions
8.6.13
LEDLDO Register (Offset = Fh) [reset = 0h]
Table 20.
LEDLDO Register Field Descriptions
8.6.14
PH_CTRL Register (Offset = 10h) [reset = 0h]
Table 21.
PH_CTRL Register Field Descriptions
8.6.15
LED_DAC_A Register (Offset = 11h) [reset = 0h]
Table 22.
LED_DAC_A Register Field Descriptions
8.6.16
LED_DAC_B Register (Offset = 12h) [reset = 0h]
Table 23.
LED_DAC_B Register Field Descriptions
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Photo Amplifier Component Selection
9.2.2.2
LED Driver Component Selection
9.2.2.3
LED Voltage Supply Selection
9.2.2.4
Regulator Component Selection
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Photo Amplifier Layout
11.1.2
CO Amplifier Layout
11.1.3
Ground Plane Layout
11.2
Layout Example
12
Device and Documentation Support
12.1
Receiving Notification of Documentation Updates
12.2
Community Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DCP|38
MPDS520B
Thermal pad, mechanical data (Package|Pins)
DCP|38
PPTD170A
Orderable Information
slvsf29a_oa
slvsf29a_pm
1
Features
Photo Chamber AFE
Dual 8-bit programmable current LED drivers
Temperature compensation of LED current
Ultra-low offset op-amp for photodiodes
Programmable and bypassable gain stage
Carbon Monoxide Sensor AFE
Ultra-low offset gain stage
Programmable gain and reference
Power Management
Programmable LDO for external microcontroller
SLC interface transmitter and receiver
Ultra-low power consumption
I
2
C serial interface
Wide input voltage range