ADC11C125是TI公司的一款高速ADC(>10MSPS)产品，ADC11C125是具有 CMOS 输出的 11 位、125 MSPS、1.1 GHz 带宽 A/D 转换器，本页介绍了ADC11C125的产品说明、应用、特性等，并给出了与ADC11C125相关的TI元器件型号供参考。
ADC11C125 - 具有 CMOS 输出的 11 位、125 MSPS、1.1 GHz 带宽 A/D 转换器 - 高速ADC(>10MSPS) - 模数转换器 - TI公司（Texas Instruments，德州仪器）
The ADC11C125 is a high-performance CMOS analog-to-digital converter capable of converting analog input signals into 11-Bit digital words at rates up to 125 Mega Samples Per Second (MSPS). This converter uses a differential, pipelined architecture with digital error correction and an on-chip sample-and-hold circuit to minimize power consumption and the external component count, while providing excellent dynamic performance. A unique sample-and-hold stage yields a full-power bandwidth of 1.1 GHz. The ADC11C125 operates from dual +3.3V and +1.8V power supplies and consumes 608 mW of power at 125 MSPS.
The separate +1.8V supply for the digital output interface allows lower power operation with reduced noise. A power-down feature reduces the power consumption to 5 mW while still allowing fast wake-up time to full operation. In addition there is a sleep feature which consumes 50 mW of power and has a faster wake-up time.
The differential inputs provide a full scale differential input swing equal to 2 times the reference voltage. A stable 1.0V internal voltage reference is provided, or the ADC11C125 can be operated with an external reference.
Clock mode (differential versus single-ended) and output data format (offset binary versus 2's complement) are pin-selectable. A duty cycle stabilizer maintains performance over a wide range of input clock duty cycles.
The ADC11C125 is pin compatible with the ADC12C170 and the ADC14155.
It is available in a 48-lead WQFN package and operates over the industrial temperature range of −40°C to +85°C.
- 1.1 GHz Full Power Bandwidth
- Internal Sample-and-Hold Circuit
- Low Power Consumption
- Internal Precision 1.0V Reference
- Single-Ended or Differential Clock Modes
- Clock Duty Cycle Stabilizer
- Dual +3.3V and +1.8V Supply Operation
- Power-Down and Sleep Modes
- Offset Binary or 2's Complement Output Data Format
- Pin-Compatible: ADC14155, ADC12C170, ADC11C170
- 48-pin WQFN Package, (7x7x0.8mm, 0.5mm Pin-Pitch)
Key Specifications
- Resolution 11 Bits
- Conversion Rate 125 MSPS
- SNR (fIN = 70 MHz) 65.5 dBFS (typ)
- SFDR (fIN = 70 MHz) 88.2 dBFS (typ)
- ENOB (fIN = 70 MHz) 10.5 bits (typ)
- Full Power Bandwidth 1.1 GHz (typ)
- Power Consumption 608 mW (typ)
