AD9268BCPZ-125 Detailed explanation of pin function specifications and circuit principle instructions

The part number AD9268BCPZ-125 is a high-performance Analog-to-Digital Converter (ADC) designed by Analog Devices (AD). It is typically used in applications that require high-speed data conversion, such as communication systems, instrumentation, and medical devices. The "BCPZ" part of the model number denotes the specific package type (a 100-lead LQFP), and the "125" refers to the speed grade, indicating a conversion rate of up to 125 MSPS (Million Samples Per Second).

Pin Function Specifications and Circuit Principle Instructions

Package Type AD9268BCPZ-125 comes in a 100-lead LQFP (Low-Profile Quad Flat Package). The LQFP package has leads arranged on all four sides, with pins offering surface mount compatibility for efficient and reliable connections. Pin Count and Pin Function List

The AD9268BCPZ-125 has 100 pins, and below is a detailed description of each pin and its function.

Pin Pin Function 1 AGND: Analog Ground. Reference point for analog signals. 2 VREF: Reference voltage input for ADC. 3 VDD: Positive Power supply for the ADC, typically 3.3V. 4 VDD: Another power supply input for the ADC. 5 AIN0+: Positive input for analog signal. 6 AIN0-: Negative input for analog signal. 7 AIN1+: Positive input for analog signal. 8 AIN1-: Negative input for analog signal. 9 AIN2+: Positive input for analog signal. 10 AIN2-: Negative input for analog signal. 11 AIN3+: Positive input for analog signal. 12 AIN3-: Negative input for analog signal. 13 VINP: Positive differential input for voltage reference. 14 VINN: Negative differential input for voltage reference. 15 AGND: Analog ground for signal processing. 16 VREF: Reference input voltage for precision ADC operation. 17 BUSY: Status pin to indicate when ADC is busy. 18 CS: Chip Select pin, used to select the chip for communication. 19 SCK: Serial Clock pin for SPI communication. 20 SDI: Serial Data Input for SPI communication. 21 SDO: Serial Data Output for SPI communication. 22 LDAC: Load DAC, used for DAC operations. 23 SYNC: Synchronization signal for timing operations. 24 DOUT0: Digital output data pin (bit 0). 25 DOUT1: Digital output data pin (bit 1). 26 DOUT2: Digital output data pin (bit 2). 27 DOUT3: Digital output data pin (bit 3). 28 DOUT4: Digital output data pin (bit 4). 29 DOUT5: Digital output data pin (bit 5). 30 DOUT6: Digital output data pin (bit 6). 31 DOUT7: Digital output data pin (bit 7). 32 DOUT8: Digital output data pin (bit 8). 33 DOUT9: Digital output data pin (bit 9). 34 DOUT10: Digital output data pin (bit 10). 35 DOUT11: Digital output data pin (bit 11). 36 DOUT12: Digital output data pin (bit 12). 37 DOUT13: Digital output data pin (bit 13). 38 DOUT14: Digital output data pin (bit 14). 39 DOUT15: Digital output data pin (bit 15). 40 DOUT16: Digital output data pin (bit 16). 41 DOUT17: Digital output data pin (bit 17). 42 DOUT18: Digital output data pin (bit 18). 43 DOUT19: Digital output data pin (bit 19). 44 DOUT20: Digital output data pin (bit 20). 45 DOUT21: Digital output data pin (bit 21). 46 DOUT22: Digital output data pin (bit 22). 47 DOUT23: Digital output data pin (bit 23). 48 VDDIO: Power supply for digital IO circuits. 49 VDDIO: Additional power supply for digital IO circuits. 50 RESET: Reset pin to initialize the ADC. 51 IRQ: Interrupt Request pin. Signals when an interrupt occurs. 52 IOVDD: Input/Output voltage for interfacing logic. 53 SENSOR1: Input from sensor 1, used in analog signal processing. 54 SENSOR2: Input from sensor 2, used in analog signal processing. 55 VDD: Power supply for internal core operation. 56 PGND: Power Ground pin. 57 SDIO: Serial Data I/O for bidirectional data transfer. 58 SENSE: Voltage sense for monitoring system performance. 59 VDD: Another power input for core operation. 60 SCK: Clock signal for serial communication. 61 FSYNC: Frame synchronization signal. 62 SDI: Serial Data Input for configuration. 63 SDO: Serial Data Output for feedback. 64 LDAC: Load DAC signal for digital-to-analog conversion. 65 SYNC: Synchronization signal for timing and data management. 66 SYNC: Another synchronization signal. 67 DOUT: Output of converted data. 68 DOUT: Another data output pin. 69 AGND: Analog ground connection. 70 VREF: Reference input for analog-to-digital conversion. 71 CS: Chip select pin for SPI interface . 72 SCK: Serial Clock pin. 73 SDI: Serial Data Input. 74 SDO: Serial Data Output. 75 VDDIO: Power supply for digital I/O operations. 76 VDD: Power supply for core system. 77 DOUT: Digital output pin. 78 DOUT: Another digital output pin. 79 AGND: Analog ground reference. 80 VREF: Reference voltage input. 81 BUSY: Indicates when the ADC is actively processing data. 82 CS: Chip Select pin for enabling the chip. 83 LDAC: Load DAC signal input. 84 SYNC: Synchronization signal for ADC operations. 85 DOUT: Data output pin for converted values. 86 DOUT: Another data output pin. 87 CS: Chip select input for SPI interface. 88 SCK: Clock signal input for SPI communication. 89 SDI: Serial Data Input pin. 90 SDO: Serial Data Output pin. 91 VREF: Voltage reference pin. 92 VDD: Power supply for operation. 93 VDDIO: Power supply for digital I/O. 94 SYNC: Synchronization signal for the ADC. 95 RESET: Reset signal input. 96 IRQ: Interrupt Request pin. 97 SENSOR1: Input signal from sensor 1. 98 SENSOR2: Input signal from sensor 2. 99 VDD: Power supply input. 100 VDD: Another power supply input. FAQ What is the maximum sampling rate of AD9268BCPZ-125? The AD9268BCPZ-125 can sample up to 125 million samples per second (MSPS). What is the power supply voltage for the AD9268BCPZ-125? The AD9268BCPZ-125 operates at 3.3V for the analog power supply and has a separate digital I/O supply. How do I connect the reference voltage for the AD9268BCPZ-125? You should connect the VREF pin to a stable reference voltage for accurate conversion. Can the AD9268BCPZ-125 be used in differential input configurations? Yes, the AD9268BCPZ-125 supports differential analog inputs via pins like AIN0+, AIN0-, etc. **How does the *BUSY* pin work on the AD9268BCPZ-125?** The BUSY pin indicates when the ADC is actively processing data and cannot accept new input. **What does the *SYNC* pin do?** The SYNC pin is used to synchronize the ADC operation with other devices or systems. How is data output from the AD9268BCPZ-125? Data is output through DOUT0 to DOUT23 pins, where each pin represents a different bit of the output data. **What is the function of the *RESET* pin?** The RESET pin is used to reset the device to its initial state. **How do I use the *CS* (Chip Select) pin in SPI mode?** The CS pin is used to select the AD9268BCPZ-125 for communication in SPI mode. **What happens if the *IRQ* pin is triggered?** The IRQ pin indicates an interrupt request, which can be used for signaling specific events.