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NXP
NXP Semiconductors.
Description : 16-bit I2C-BUS LED DRIVER with programmable blink rates

General description
The PCA9552 LED blinker blinks LEDs in I2C-BUS and SMBUS applications where it is necessary to limit BUS traffic or free up the I2C-BUS masters (MCU, MPU, DSP, chip set, etc.) timer. The uniqueness of this device is the internal oscillator with two programmable blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the BUS master must send repeated commands to turn the LED on and off. This greatly increases the amount of traffic on the I2C-BUS and uses up one of the masters timers. The PCA9552 LED blinker instead requires only the initial setup command to program BLINK RATE 1 and BLINK RATE 2 (that is, the frequency and duty cycle) for each individual output. From then on, only one command from the BUS master is required to turn each individual open-drain output on, off, or to cycle at BLINK RATE 1 or BLINK RATE 2. Maximum output sink current is 25 mA per bit and 200 mA per package.

Features
■ 16 LED DRIVERs (on, off, flashing at a programmable rate)
■ 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.172 Hz and 44 Hz (5.82 seconds and 0.023 seconds)
■ Input/outputs not used as LED DRIVERs can be used as regular GPIOs
■ Internal oscillator requires no external components
I2C-BUS interface logic compatible with SMBUS
■ Internal power-on reset
■ Noise filter on SCL/SDA inputs
■ Active LOW reset input
■ 16 open-drain outputs directly drive LEDs to 25 mA
■ Edge rate control on outputs
■ No glitch on power-up
■ Supports hot insertion
■ Low standby current
■ Operating power supply voltage range of 2.3 V to 5.5 V
■ 0 Hz to 400 kHz clock frequency

NXP
NXP Semiconductors.
Description : 8-BIT I2C-BUS LED DRIVER with programmable blink rates

General description
The PCA9551 LED blinker blinks LEDs in I2C-BUS and SMBUS applications where it is necessary to limit BUS traffic or free up the I2C-BUS master's (MCU, MPU, DSP, chip set, etc.) timer. The uniqueness of this device is the internal oscillator with two programmable blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the BUS master must send repeated commands to turn the LED on and off. This greatly increases the amount of traffic on the I2C-BUS and uses up one of the master's timers. The PCA9551 LED blinker instead requires only the initial set-up command to program BLINK RATE 1 and BLINK RATE 2 (i.e., the frequency and duty cycle) for each individual output. From then on, only one command from the BUS master is required to turn each individual open-drain output on, off, or to cycle at BLINK RATE 1 or BLINK RATE 2.

Features
8 LED DRIVERs (on, off, flashing at a programmable rate)
2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.148 Hz and 38 Hz (6.74 seconds and 0.026 seconds)
Input/outputs not used as LED DRIVERs can be used as regular GPIOs
Internal oscillator requires no external components
I2C-BUS interface logic compatible with SMBUS
Internal power-on reset
Noise filter on SCL/SDA inputs
Active LOW reset input
8 open-drain outputs directly drive LEDs to 25 mA
Edge rate control on outputs
Maximum output sink current is 25 mA per bit and 100 mA per package.

NXP
NXP Semiconductors.
Description : 2-bit I2C-BUS LED DRIVER with programmable blink rates

General description
The PCA9550 LED blinker blinks LEDs in I2C-BUS and SMBUS applications where it is necessary to limit BUS traffic or free up the I2C masters (MCU, MPU, DSP, chip set, etc.) timer. The uniqueness of this device is the internal oscillator with two programmable blink rates. To blink LEDs using normal I/O expanders like the PCF8574 or PCA9554, the BUS master must send repeated commands to turn the LED on and off. This greatly increases the amount of traffic on the I2C-BUS and uses up one of the masters timers.

Features
■ 2 LED DRIVERs (on, off, flashing at a programmable rate)
■ 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.172 Hz and 44 Hz (5.82 seconds and 0.023 second)
■ Input/output not used as LED DRIVERs can be used as regular GPIOs
■ Internal oscillator requires no external components
I2C-BUS interface logic compatible with SMBUS
■ Internal power-on reset
■ Noise filter on SCL/SDA inputs
■ Active LOW reset input
■ 2 open-drain outputs directly drive LEDs to 25 mA
■ ControlLED edge rates to minimize ground bounce
■ No glitch on power-up
■ Supports hot insertion
■ Low standby current
■ Operating power supply voltage range of 2.3 V to 5.5 V
■ 0 kHz to 400 kHz clock frequency
■ ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
■ Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
■ Packages offered: SO8, TSSOP8 (MSOP8), HVSON8

Part Name(s) : Q67000-A8054 TBA130-2
Siemens
Siemens AG
Description : FM SOUND IF FOR TELEVISION APPLICATIONS WITH I2C BUS AND SCART

FM SOUND IF FOR TELEVISION APPLICATIONS WITH I2C BUS AND SCART

Part Name(s) : Q67100-H5139 SDA4331X
Infineon
Infineon Technologies
Description : PLL with I2C BUS for AM/FM Receivers

Overview
Features
• 155 MHz FM and 40 MHz AM input frequency
• 30 mVeff AM and 50 mVeff FM sensitivity
• Additional open drain ports controlLED by I2C BUS
• 2-pin quartz oscillator
• Fast phase detector with short anti-backlash pulses and polarity reversal
• Charge pump current programmable in four steps up to 4.5 mA
• Frequency resolution of 1, 5 and 10 kHz AM and 12.5, 25 and 50 kHz FM
• P-DSO-24 package

Application
  The SDA 4331X provides separated input and output ports for AM and FM and is well suited for extremely fast loop settling times in the FM mode.

 

Part Name(s) : SDA4331X Q67100-H5139
Siemens
Siemens AG
Description : PLL with I2C BUS for AM/FM Receivers

Overview
Features
• 155 MHz FM and 40 MHz AM input frequency
• 30 mVeff AM and 50 mVeff FM sensitivity
• Additional open drain ports controlLED by I2C BUS
• 2-pin quartz oscillator
• Fast phase detector with short anti-backlash pulses and polarity reversal
• Charge pump current programmable in four steps up to 4.5 mA
• Frequency resolution of 1, 5 and 10 kHz AM and 12.5, 25 and 50 kHz FM
• P-DSO-24 package

Application
  The SDA 4331X provides separated input and output ports for AM and FM and is well suited for extremely fast loop settling times in the FM mode.

 

Infineon
Infineon Technologies
Description : PLL WITH I2C BUS FOR AM/FM RECEIVERS

PLL WITH I2C BUS FOR AM/FM RECEIVERS

Description : PLL WITH I2C BUS FOR AM/FM RECEIVERS

PLL WITH I2C BUS FOR AM/FM RECEIVERS

Description : 16-channel, 12-bit PWM FM+ I2C-BUS LED controller

General description
The PCA9685 is an I2C-BUS controlLED 16-channel LED controller optimized for LCD Red/Green/Blue/Amber (RGBA) color backlighting applications. Each LED output has its own 12-bit resolution (4096 steps) fixed frequency individual PWM controller that operates at a programmable frequency from a typical of 40 Hz to 1000 Hz with a duty cycle that is adjustable from 0 % to 100 % to allow the LED to be set to a specific brightness value. All outputs are set to the same PWM frequency.

• The PCA9685 allows staggered LED output on and off times to minimize current surges. The on and off time delay is independently programmable for each of the 16 channels. This feature is not available in PCA9635.
• The PCA9685 has 4096 steps (12-bit PWM) of individual LED brightness control. The PCA9635 has only 256 steps (8-BIT PWM).
• When multiple LED controllers are incorporated in a system, the PWM pulse widths between multiple devices may differ if PCA9635s are used. The PCA9685 has a programmable prescaler to adjust the PWM pulse widths of multiple devices.
• The PCA9685 has an external clock input pin that will accept user-supplied clock (50 MHz max.) in place of the internal 25 MHz oscillator. This feature allows synchronization of multiple devices. The PCA9635 does not have external clock input feature.
• Like the PCA9635, PCA9685 also has a built-in oscillator for the PWM control.
However, the frequency used for PWM control in the PCA9685 is adjustable from about 40 Hz to 1000 Hz as compared to the typical 97.6 kHz frequency of the PCA9635. This allows the use of PCA9685 with external power supply controllers. All bits are set at the same frequency.
• The Power-On Reset (POR) default state of LEDn output pins is LOW in the case of PCA9685. It is HIGH for PCA9635.

Philips
Philips Electronics
Description : 2-bit I2C LED DRIVER with programmable blink rates

DESCRIPTION
The PCA9550 LED Blinker blinks LEDs in I2C-BUS and SMBUS applications where it is necessary to limit BUS traffic or free up the I2C Master’s (MCU, MPU, DSP, chipset, etc.) timer. The uniqueness of this device is the internal oscillator with two programmable blink rates. To blink LEDs using normal I/O Expanders like the PCF8574 or PCA9554, the BUS master must send repeated commands to turn the LED on and off. This greatly increases the amount of traffic on the I2C-BUS and uses up one of the master’s timers.

FEATURES
• 2 LED DRIVERs (on, off, flashing at a programmable rate)
• 2 selectable, fully programmable blink rates (frequency and duty cycle) between 0.15625 and 40 Hz (6.4 and 0.025 seconds)
• Input/output not used as LED DRIVERs can be used as regular GPIOs
• Internal oscillator requires no external components
I2C-BUS interface logic compatible with SMBUS
• Internal power-on reset
• Noise filter on SCL/SDA inputs
• Active-LOW reset input
• 2 open drain outputs directly drive LEDs to 25 mA
• ControlLED edge rates to minimize ground bounce
• No glitch on power-up
• Supports hot insertion
• Low stand-by current
• Operating power supply voltage range of 2.3 V to 5.5 V
• 0 to 400 kHz clock frequency
• ESD protection exceeds 2000 V HBM per JESD22-A114, 150 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101
• Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
• Packages offered: SO8, TSSOP8

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