Overview
The AD9648TCPZ125EPRL7, produced by Analog Devices Inc., is a high-performance, dual-channel, 14-bit analog-to-digital converter (ADC) designed for a wide range of applications. This monolithic ADC operates from a single 1.8 V analog power supply and features a separate digital output driver supply to accommodate 1.8 V CMOS or LVDS logic families. It is particularly suited for defense and aerospace applications due to its compliance with the AQEC standard and its ability to operate over a military temperature range of −55°C to +125°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 14 Bits | - | - | - |
| Sample Rate | - | - | 125 MSPS | - |
| Supply Voltage (AVDD) | 1.7 V | 1.8 V | 1.9 V | V |
| Supply Voltage (DRVDD) | 1.7 V | 1.8 V | 1.9 V | V |
| Supply Current (IAVDD) | 95 mA | 100 mA | - | mA |
| Supply Current (IDRVDD) - 1.8 V CMOS | 22.5 mA | 23.8 mA | - | mA |
| Supply Current (IDRVDD) - 1.8 V LVDS | 65.0 mA | 66.4 mA | - | mA |
| Power Consumption - DC Input | - | - | 155.5 mW | mW |
| Power Consumption - Sine Wave Input (CMOS Output) | - | - | 223 mW | mW |
| Power Consumption - Sine Wave Input (LVDS Output) | - | - | 300 mW | mW |
| Standby Power | - | - | 120 mW | mW |
| Power-Down Power | - | - | 2.0 mW | mW |
| Input Common-Mode Range | 0.5 V | - | 1.3 V | V |
| SNR at 70 MHz | - | - | 74.5 dBFS | dBFS |
| SFDR at 70 MHz | - | - | 91 dBc | dBc |
Key Features
- 1.8 V analog supply operation and separate digital output driver supply for 1.8 V CMOS or LVDS logic families.
- Dual-channel, 14-bit ADC with a sample rate of up to 125 MSPS.
- High performance sample-and-hold circuit with input frequencies up to 200 MHz.
- Programmable clock and data alignment, and programmable digital test pattern generation including deterministic, pseudorandom, and custom user-defined patterns via SPI.
- Differential analog input with 650 MHz bandwidth and IF sampling frequencies up to 200 MHz.
- Optional duty cycle stabilizer (DCS) to compensate for wide variations in the clock duty cycle.
- Digital output data presented in offset binary, Gray code, or twos complement format.
- Data output clock (DCO) provided for each ADC channel to ensure proper latch timing with receiving logic.
- Output logic levels of 1.8 V CMOS or LVDS supported, with the option to multiplex output data onto a single output bus.
- 64-lead RoHS-compliant LFCSP package, pin compatible with other ADC models from Analog Devices.
Applications
- Communications systems, including diversity radio systems and multimode digital receivers (GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA).
- Defense and aerospace applications due to its compliance with the AQEC standard and military temperature range.
Q & A
- What is the resolution and sample rate of the AD9648TCPZ125EPRL7?
The AD9648TCPZ125EPRL7 is a 14-bit ADC with a sample rate of up to 125 MSPS.
- What are the supported output logic levels?
The AD9648TCPZ125EPRL7 supports output logic levels of 1.8 V CMOS or LVDS.
- What is the operating temperature range of the AD9648TCPZ125EPRL7?
The operating temperature range is −55°C to +125°C, making it suitable for military and aerospace applications.
- What types of digital test patterns can be generated by the AD9648TCPZ125EPRL7?
The ADC can generate built-in deterministic and pseudorandom patterns, as well as custom user-defined test patterns via the SPI interface.
- What is the power consumption of the AD9648TCPZ125EPRL7 in different modes?
The power consumption varies depending on the mode: 155.5 mW for DC input, 223 mW for sine wave input with CMOS output, and 300 mW for sine wave input with LVDS output. Standby power is 120 mW, and power-down power is 2.0 mW).
- What is the input common-mode range of the AD9648TCPZ125EPRL7?
The input common-mode range is from 0.5 V to 1.3 V).
- What are the SNR and SFDR specifications at 70 MHz?
The SNR is 74.5 dBFS, and the SFDR is 91 dBc at 70 MHz).
- Is the AD9648TCPZ125EPRL7 RoHS compliant?
Yes, the AD9648TCPZ125EPRL7 is packaged in a 64-lead RoHS-compliant LFCSP).
- What types of applications is the AD9648TCPZ125EPRL7 suited for?
The AD9648TCPZ125EPRL7 is suited for communications systems, including diversity radio systems and multimode digital receivers, as well as defense and aerospace applications).
- How does the duty cycle stabilizer (DCS) function in the AD9648TCPZ125EPRL7?
The optional duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance).
