Overview
The AD9877ABSZ is a mixed-signal front end (MxFE) integrated circuit designed by Analog Devices Inc. This device is specifically tailored for use in set-top boxes, cable modems, and other similar applications. It operates on a single 3.3V CMOS supply and is compliant with MCNS-DOCSIS, DVB, and DAVIC standards. The AD9877ABSZ integrates a comprehensive set of functionalities including a transmit path with an interpolation filter, a complete quadrature digital upconverter, and transmit DACs, as well as a receive path featuring a 12-bit ADC and dual 8-bit ADCs for IQ sampling.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power Supply (VAVDD, VDVDD, VDRVDD) | 3.0 | 3.9 | V | |
| Operating Temperature | -40 | 85 | °C | |
| Maximum Junction Temperature | 150 | °C | ||
| Storage Temperature | -65 | 150 | °C | |
| Lead Temperature (Soldering, 10 sec) | 300 | °C | ||
| 12-bit ADC Resolution | 12 | Bits | ||
| 8-bit ADC Conversion Rate | 16.5 | MSPS | ||
| Analog Input Voltage Range | 1 | Vppd | ||
| Power Consumption (Full Power-Down) | 10 | mA |
Key Features
- Low-cost 3.3V CMOS MxFE for set-top boxes and cable modems.
- Programmable sampling clock rates and selectable interpolation filter.
- Analog Tx output level adjustment.
- 12-bit, 33 MSPS direct IF ADC and dual 8-bit, 16.5 MSPS sampling IQ ADCs.
- Two 12-bit Σ-Δ auxiliary DACs.
- Direct interface to AD8321/AD8325 or AD8322/AD8327 PGA cable drivers.
- Compliance with MCNS-DOCSIS, DVB, and DAVIC standards.
Applications
- Cable modems.
- Set-top boxes.
- Wireless modems.
Q & A
- What is the primary application of the AD9877ABSZ?
The AD9877ABSZ is primarily used in set-top boxes, cable modems, and wireless modems.
- What is the operating voltage of the AD9877ABSZ?
The AD9877ABSZ operates on a single 3.3V CMOS supply.
- What are the key ADC specifications of the AD9877ABSZ?
The device includes a 12-bit, 33 MSPS direct IF ADC and dual 8-bit, 16.5 MSPS sampling IQ ADCs.
- Does the AD9877ABSZ support any specific standards?
Yes, it is compliant with MCNS-DOCSIS, DVB, and DAVIC standards.
- What is the maximum junction temperature for the AD9877ABSZ?
The maximum junction temperature is 150°C.
- What is the storage temperature range for the AD9877ABSZ?
The storage temperature range is from -65°C to 150°C.
- How many auxiliary DACs does the AD9877ABSZ have?
The device has two 12-bit Σ-Δ auxiliary DACs.
- What is the power consumption in full power-down mode?
The power consumption in full power-down mode is 10 mA.
- What is the analog input voltage range for the ADCs?
The analog input voltage range is 1 Vppd.
- Can the AD9877ABSZ be used with PGA cable drivers?
Yes, it has a direct interface to AD8321/AD8325 or AD8322/AD8327 PGA cable drivers.
