Analog and Power for AM18x

Introduction

This page serves as a repository of Complimentary Devices that can be paired with the AM18x SoC devices when integrating the device into a system. The Complementary Products listed here serve a wide range of functions such as:

• Providing basic support functions for the SoC (power, clocking, etc.)
• Expanding the interface options beyond the on-chip peripherals
• Creating the link between the digital domains on the SoC to the system's analog/physical domains

The Complementary Products are organized into functional categories, with the goal of showing several options and their respective Benefits.

Analog Video Input

AM18x devices include a 8-/16-bit digital video input port (VPIF) that can be interfaced with a video decoder, or ADC, to bring analog SD video into the SoC. Before bringing the analog video into the ADC, it is also necessary to run it through an anti-aliasing filter to restrict the bandwidth before sampling. Below is a sample of SD video decoders and anti-aliasing filters that would be a good match for AM18x devices. Also view the Video and Imaging Solutions Guide for a comprehensive selection of complementary video products.

Part Number	Description	Device Interface	Details
TVP5147M	Component, S-Video, and Composite Video Decoder	VPIF	The following is a summary of the device features: Two 30 MSPS 10-bit A/D channels with programmable gain control Supports NTSC, PAL, SECAM CVBS (composite), and S-video 10 analog video input terminals Programmable video output formats including 10-bit ITU-R BT.656 Composite or S-video signals samples at 2x ITU-R BT.601 clock frequency Programmable gain amplifier and automatic gain control circuit Supports different VBI features
TVP5150	Composite, S-Video Video Decoder	VPIF	The following is a summary of the device features: Accepts NTSC/PAL video data ITU-R BT.601 standard sampling 8-bit 4:2:2 or 8-bit ITU-R BT.656 output format Two composite inputs or one S-video input Programmable gain amplifier and automatic gain control circuit Ultralow power consumption: 113mW Power-down mode: <1mW Supports different VBI modes (see device data sheet)
THS7353	3-Channel Video Amplifier/Filter	VPIF	Integrated Anti-aliasing filter for Video ADCs Selectable SD/ED/HD Filter Cut-off Frequencies 0dB Gain and 2:1 MUX for connecting dual analog video sources

Analog Video Output

AM18x devices include a 8-/16-bit digital video output port (VPIF) that can be interfaced with a video encoder, or DAC, to deliver analog SD video from the SoC. On the output of the ADC, it is also necessary to take the analog video through an amplifier and reconstruction filter to achieve the correct gain and remove the high-frequency images of the signal. Below is a sample of SD video DACs, amplifiers, and reconstruction filters that would be a good match for AM18x devices. Also view the Video and Imaging Solutions Guide for a comprehensive selection of complementary video products.

Part Number	Description	Compatible Part Numbers	Device Interface	Details
ADV7343	Component, S-Video, and Composite Video Encoder	ADV7342	VPIF	The following is a summary of the device features: 1.8V/3.3V interface support 74.25 MHz 20-/30-bit high definition input support 6, 11-bit, 297 MHz video DACs NTSC M, PAL B/D/G/H/I/M/N, PAL 60 support NTSC and PAL square pixel operation (24.54 MHz/29.5 MHz) Macrovision® Rev 7.1.L1 (SD) and Rev 1.2 (ED) compliant Simultaneous SD and ED/HD operation
THS7314	Video Amplifier		VPIF	This device has the following features: 3 SDTV video amplifiers for CVBS, S-video, component, and RGB Low 16mA at 3.3V total quiscent current

Audio Input/Output

AM18x devices include a sixteen-serializer Multi-channel Audio Serial Port (McASP) for interfacing to audio Codecs, ADCs, DACs, Digital Power Amplifiers, and more. In addition, AM18x devices include a Multi-channel Buffered Serial Port (McBSP) for interfacing to a variety of devices, including audio devices. Below is a sampling of audio Codecsthat would be a good match for AM18x devices. Also view the Audio Guide for a comprehensive selection of complementary audio products.

Part Number	Description	Compatible Part Numbers	Device Interface	Details
TLV320AIC3107	Low Power Stereo CODEC with Integrated Mono Class-D Speaker Amplifiers	TLV320AIC3007	McASP/McBSP	Stereo CODEC with Integrated MONO Class-D Amp Audio ADC + Audio DAC Seven Audio Input Pins
TLV320AIC3104	Low Power Stereo Audio CODEC For Portable Audio/Telephony		McASP/McBSP	Stereo Audio DAC+ADC Six Audio Output Drivers Automatic Gain Control 14mW Stereo 48-kHz PB
TLV320AIC3254	Low Power Stereo Audio Codec	TLV320AIC3204	McASP/McBSP	4.1 mW Stereo 48ksps DAC Playback 6.1 mW Stereo 48 ksps ADC Record Low Power Bypass

Analog-to-Digital Converters

AM18x devices include a universal parallel port (UPP) which can be used to interface to various devices like high-speed analog-to-digital converters (ADCs).  The UPP supports up to two CMOS I/O channels with a maximum width of 16-bits.  Each channel has separate clock and control signals for independent operation.  Additionally, the UPP can be clocked both externally and internally (high-speed ADCs require a low-jitter, high-frequency clock, see Clocking section for UPP clock solutions). The AM18x serial peripheral interface (SPI) can be used to interface to low-speed ADCs.

Below is a list of ADCs compatible with AM18x devices.  Also see the Data Converter Selection Guide for a comprehensive guide to data coverter solutions from TI.

Part Number	Description	Compatible Part Numbers	Device Interface	Details
ADS62P24	Dual-channel, 12-bit, 105MSPS ADC	ADS62P25 ADS62P23 ADS62P22	UPP	12-bit, dual channel, pipeline ADC with a sample rate of up to 105MPSPS. ADS62P25/23/22 provide different levels of MSPS and power.
ADS6123	Single-channel, 12-bit, 80MSPS ADC	ADS6122 ADS6143 ADS6142	UPP	12-bit, single input, pipeline ADC with a sample rate of up to 80MSPS. ADS6122 is also 12-bit ADC, but with lower MSPS and lower power consumption. ADS6143/42 are 14-bit ADCs; pin compatible with the ADS612x devices.
ADS901	Single-channel, 10-bit, 20MSPS ADC	ADS900	UPP	10-bit pipeline ADC with a sample rate of 20MSPS with external reference. ADS900 has both external and internal voltage reference mode.
ADS5232	Dual-channel, 12-bit, 65MSPS ADC	ADS5231 ADS5237	UPP	12-bit, dual input, pipelined, ADC with sample rate up to 65MSPS with external reference. ADS5237 is 10-bit version, ADS5231 is 12-bit version with 40MSPS.
ADS7884	Single-channel, 10-bit, 3MSPS serial ADC	ADS7885	SPI	10-bit SAR ADC with sample rate of 3MSPS. ADS7885 is 8-bit version.

Digital-to-Analog Converters

AM18x devices include a universal parallel port (UPP) which can be used to interface to various devices like high-speed digital-to-analog converters (DACs).  The UPP supports up to two CMOS I/O channels with a maximum width of 16-bits.  Each channel has separate clock and control signals for independent operation.  Additionally, the UPP can be clocked both externally and internally (high-speed DACs require a low-jitter, high-frequency clock, see Clocking section for UPP clock solutions). The AM18x serial peripheral interface (SPI) can be used to interface to low-speed DACs.

Below is a list of ADCs compatible with AM18x devices. Also see the Data Converter Selection Guide for a comprehensive guide to data coverter solutions from TI.

Part Number	Description	Compatible Part Numbers	Device Interface	Details
DAC2904	Dual-channel, 14-bit 125MSPS DAC	DAC2902 DAC2900	UPP	14-bit, 2-channel DAC with current output and sample rate up to 125MSPS. Power consumption: 310mW, power down: 23mW Pin compatibility between family members provides 10-bit (DAC2900), 12-bit (DAC2902), and 14-bit (DAC2904) resolution.
THS5661A	Single-channel, 12-bit, 125MSPS DAC	THS5671A THS5651A THS5641A	UPP	12 bit, 1-channel DAC with current output and sample rate up to 125MSPS. Power consumption 175mW at 5V; sleep mode power 25mW at 5V. Alternate part numbers offer pin-compatible options with different precisions: 71A 14-bit; 51A 10-bit; 41A, 8-bit.
DAC2932	Dual-channel, 12-bit, 40MSPS DAC		UPP	12-bit, dual-channel DAC with current ouput and sample rate up to 40MSPS. Includes four voltage output serial DACs, separate from two current output DACs. Low power consumption: 29mW at 40MSPS, 5.5mW standby, 25uW power-down.
DAC8831	Single-channel, 16-bit, 2MSPS serial DAC	DAC8830	SPI	16-bit, 1-channel DAC with voltage output and sample rate of 2MSPS. Power consumption is 15uW at 3V. DAC8830 is a lower speed version.

RS-232

The AM18x UART peripheral can be used to implement a RS-232 interface when paired with the appropriate line driver/receiver. All three UARTs on AM18x devices support transmit/receive and modem control (RTS, CTS). Below is a sampling of RS-232 products with varying numbers of drivers/receivers to support the desired RS-232 capabilities.

Part Number	Description	Device Interface	Benefits
TRSF3232E	Two-Channel RS-232 Driver/Receiver	UART0/1/2	Adds RS-232 (with modem control) Capabilities Operates up to 1 Mbit/s ±15-kV HBM ±15-kV IEC 61000-4-2 Air-Gap Discharge ±8-kV IEC 61000-4-2 Contact Discharge Dual-channel
TRSF3221E	Single-Channel RS-232 Driver/Receiver	UART0/1/2	Adds RS-232 (without modem control) Capabilities Operates up to 1 Mbit/s ±15-kV HBM ±15-kV IEC 61000-4-2 Air-Gap Discharge ±8-kV IEC 61000-4-2 Contact Discharge Single-channel

Miscellaneous

AM18x devices include an I2C interface which can be used to communicate with off-chip peripherals like temperature sensors and touch screen controllers.  Below is a sampling of off-chip peripherals which can be used with AM18x devices.

Part Number	Description	Compatible Part Numbers	Device Interface	Details
TPS65070	Touch Screen Interface	TPS65073 TPS650731 TPS650732	I2C	The TPS6507x devices are power management Ics for portable applications. The touch screen interface is embedded in power management IC.
TMP102	Low-power Digital Temperature Sensor		I2C	Low Quiescent Current 10 uA (MAX) 12-bit Resolution 10 uA (MAX) shutdown current Supply Range: 1.4V to 3.6V Accuracy: 0.5°C (–25°C to +85°C)
TCA8418 (TBA)	Keypad Scan with Integrated ESD Protection		I2C	QWERTY keyboard operation plus GPIO expansion 8x10 kepad array supported (80 buttons) Integrated ESD protection Stanby current: 3uA 1.65V to 3.6V operating supply voltage

TBA = to be announced

Clocking

AM18x devices require a 12 to 30MHz main clock. While a crystal can be paired with the internal oscillator to provide this clock, an external clock generator/synthesizer can sometime be more cost effective. Clock generators/synthesizers can use a single crystal to produce many clock output frequencies using their internal PLLs. Not only can they source both the main clock for AM18x devices, they can also provide the clock for other devices in the system such as the audio and video encoders/decoders.

Additionally, the UPP requires a low-jitter clock to interface to high-speed ADCs and DACs.  The UPP can be configured to operate using an external clock source provided by a clock generator/synthesizer.

Below is a sampling of clock generators/synthesizers that would complement AM18x devices. Also view the Clocks and Timing Selection Guide for a comprehensive guide to clocking solutions from TI.

Part Number	Description	Device Interface	Details
CDCM7005	3.3-V High Performance Clock Synchronizer and Jitter Cleaner	UPP	High Performance LVPECL and LVCMOS PLL Clock Synchronizer. LVCMOS input frequencies up to 200MHz. VCXO_IN clock synchronized to one of two reference clocks. Up to 10 LVCMOS outputs and 5 differential LVPECL outputs. VCXO_IN frequencies up to 2GHz.
CDCV304	200-MHz General Purpose Clock Buffer	UPP	Operating frequency: 0 to 200MHz. Distributes one clock input to one bank of four outputs. Operates from single 3.3V or 2.5V supply.
CDCM61004	1:4 Ultra Low Jitter Crystal-In Clock Generator	UPP	Single-ended or crystal reference input. Input frequency range: 21.875 to 28.47MHz. Supports multiple common LVCMOS output frequencies (62.5 to 250MHz).
WIP		Clock Input	WIP

Power

AM18x devices require regulated 1.2V core, 1.8V, and 3.3V voltages, sequenced in a low-to-high order.

TI provides a AM18x Power Management Website that gives detailed power specs, power reference designs covering multiple design care-abouts, and other useful links. These power reference designs are built and tested based on the worst case power specs given in the power spec table.

Below is a sampling of the power management products that complement AM18x devices.

Part Number	Description	Details
TPS65070	Single-chip Power Management IC with battery charger, TSC, wLED drivers	The TPS6507x devices are power management ICs for portable applications.
TPS62111	4.5-17V input, high efficiency DCDC Converter with Integrated FETs	High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency Up to 1.5-A Output Current High Efficiency Over a Wide Load-Current range Due to PFM/PWM Operation Mode Fixed 3.3V output eliminates need for external voltage-setting resistors
TPS62353	3MHz DCDC Converter with Integrated FETs & I2C for Dynamic Voltage Scaling	88% Efficiency at 3-MHz Operation Output Peak Current up to 800mA Best in Class Load and Line Transient Available in a 10-Pin QFN (3 x 3 mm) 12-Pin NanoFree™ (CSP) Packaging
TPS62420	Dual, Adjustable, 600mA and 1000mA, 2.25MHz Step-Down Converter with Integrated FETs & 1-Wire Interface in QFN	High Efficiency—up to 95% VIN Range From 2.5 V to 6 V Output Current 600 mA and 1000 mA EasyScale™ Optional One Pin Serial Interface for Dynamic Output Voltage Adjustment Power Save Mode at Light Load Currents
TPS74801	Single Output LDO, 1.5A, Adjustable Output, Programmable Soft-Start	VOUT Range: 0.8V to 3.6V 2% Accuracy Over Line/Load/Temperature Programmable Soft-Start Provides Linear Voltage Startup Stable with Any Output Capacitor ≥ 2.2F