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ADM1266ACPZ-R7 datasheet, price

Discover the ADM1266ACPZ-R7 through Digi-Key, featuring a comprehensive Reference Manual. Find all necessary technical details and specifications to effectively utilize this component in your designs.

Brands: Analog Devices Inc.

Download: ADM1266ACPZ-R7 Datasheet PDF

Price: inquiry

In Stock: 22,507

Type: Sequencer

Voltage Threshold: Adjustable/Selectable

Output: Open Drain, Push-Pull

Package: 64-WFQFN Exposed Pad, CSP

ADM1266ACMZ-R7 Pinout Equivalent Circuit

1：Overview of the ADM1266ACMZ-R7：

ADM1266ACMZ-R7 is a high-precision digital power monitoring and management device introduced by Analog Devices, USA. It is suitable for design scenarios such as data centers, communication infrastructure, or industrial automation. The device offers real-time monitoring, fault diagnosis, and dynamic adjustment of multiple power sources via PMBus/SMBus interfaces, supporting the design of highly reliable power systems. ADM1266ACMZ-R7 features 17 voltage/current monitoring channels, accurately measuring each input/output voltage, current, and power. It is compatible with PMBus v1.3 and SMBus protocols, allowing software configuration of parameters like thresholds and alarm conditions, and provides I²C/SPI compatible interfaces for easy integration with microcontrollers or host systems. Additionally, ADM1266ACMZ-R7 includes overvoltage/undervoltage protection (OVP/UVP), overcurrent protection (OCP), and a wide operating temperature range (-40°C to +125°C) suitable for industrial environments.

2：ADM1266ACMZ-R7 Important pin function definition:

Pin No.	Mnemonic	Description
1 to 3, 24 to 27, 59 to 64	VP1 to VP13	Low Voltage Inputs to Supply Fault Detectors. These pins monitor voltages of up to 5 V.
4	REFOUT	Reference Output. A capacitor must be connected between this pin and REFGND. A 2.2 µF capacitor is recommended for this purpose.
5	REFGND	Ground Return for On-Chip Reference Circuits. Star connect this ground to the GND pin.
6 to 14	DAC1 to DAC9	Voltage Output DACs. These DACs can be used for margining and trimming the supply rails.
15	XTAL2	Crystal Input 2. Configured as 32.768 kHz crystal input. Can also be high impedance.
16	XTAL1	Crystal Input 1. Configured as 32.768 kHz crystal input. Can also be high impedance.
17	ADDR	PMBus Address Select Resistor. A resistor to GND sets one of 16 addresses.
18 to 21	VH1 to VH4	High Voltage Inputs to Supply Fault Detectors. Can monitor up to 15 V. VH1 to VH2 powers ADM1266 via supply arbitrator.
22	GND	Supply Ground.
23	AVDD_CAP	Analog Supply Voltage. Linearly regulated to 3.3 V. Requires ≥68 µF capacitor to GND.
28 to 32, 48 to 58	PDIO1 to PDIO16	Programmable Driver I/Os. Default to 20 kΩ pull-down at power-up.
33 to 35, 37 to 40, 44, 45	GPIO1 to GPIO9	General-Purpose I/Os. Default start-up state is high impedance.
36	DVDD_CAP	Digital Supply Voltage (1.8 V). Requires ≥2.2 µF X5R/10 V capacitor to GND.
41	ID_SDA	Interdevice Communications Bus Data Signal. Bidirectional, open-drain. Requires 2.2 kΩ pull-up to AVDD_CAP.
42	ID_SCL	Interdevice Communications Bus Clock Signal. Bidirectional, open-drain. Requires 2.2 kΩ pull-up to AVDD_CAP.
43	SYNC	32.768 kHz Clock Timing Sync I/O. High impedance by default. Can provide or receive clock signal.
46	SDA	PMBus Data. Bidirectional, open-drain. Requires 2.2 kΩ pull-up resistor.
47	SCL EPAD	PMBus Clock. Bidirectional, open-drain. Requires 2.2 kΩ pull-up resistor. Exposed Pad. Must be soldered to the ground plane.

3：Partial circuit diagram of the ADM1266ACMZ-R7component.

（1）In circuit design, connecting an external capacitor between the AVDD_CAP pin and the GND pin can isolate noise from the on-chip power supply, as shown in the diagram below. This capacitor also serves another purpose: when the voltage at the VHx pin is lower than the voltage at the AVDD_CAP pin, the LDO component will immediately shut off, preventing the VHx power from pulling down the AVDD_CAP voltage.It is recommended to use a capacitor with a minimum value of 68µF.

（2）The ADM1266ACMZ-R7 has nine dedicated pins as gpio. Each pin can be configured as input or output as needed. The gpio does not include an internal fault filter and the gpio is default high impedance.

4：Alternative model recommendation

ADM1275 ：

ADM1275 is a hot-swappable controller chip that integrates a 12-bit analog-to-digital converter (ADC), allowing it to read current and voltage through this converter. The ADM1275 protects external FETs by limiting the time the FET remains conductive at maximum current. This current limit time is determined by the capacitor connected to the TIMER pin. Additionally, a foldback resistor network can actively reduce the current limit as the voltage across the FET increases. This helps maintain constant power within the FET and ensures safe operation.

UCD9240：

UCD9240 Is a 4-channel digital power controller launched by Texas Instruments, designed for high-density and high-efficiency power system. It is suitable for data center, server, FPGA / ASIC power supply scenarios, providing dynamic voltage regulation (DVS), accurate load adjustment rate and efficient power distribution. Support PMBus / I²C interface and can use software configuration parameters (e. g. voltage, frequency, protection threshold). It also provides fault logging and black box storage function.

LTC2978：

LTC2978 Is a multi-channel digital power monitoring and management device launched by Analog Devices, designed for high density, high reliability power system. It supports 8-way voltage monitoring, integrated PMBus / I²C interface, and is suitable for data center, server, industrial automation and other complex scenarios requiring multi-power rail management, providing dynamic voltage regulation, fault diagnosis and efficient power distribution. LTC2978 Support dynamic voltage regulation (DVS), voltage slope adjustable (Slew Rate Control). The input voltage range is 0.5 V to 32 V, covering most power rail requirements (e. g. POE + +, FPGA power supply).