AD9870: IF Digitizing Subsystem
The AD9870 is a general-purpose IF subsystem which digitizes a low-level 10-300 MHz IF input with a bandwidth of up to 150 kHz. The signal chain of the AD9870 consists of a low-noise amplifier, a ...More
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AD9870: IF Digitizing Subsystem
Product Description
The AD9870 is a general-purpose IF subsystem which digitizes a low-level 10-300 MHz IF input with a bandwidth of up to 150 kHz. The signal chain of the AD9870 consists of a low-noise amplifier, a mixer, a variable gain amplifier with integral anti-alias filter, a bandpass sigma-delta analog-to-digital converter and a decimation filter with programmable decimation factor. An automatic gain control (AGC) circuit provides the AD9870 with 25 dB of continuous gain adjustment. The high dynamic range of the bandpass sigma-delta converter allows the AD9870 to cope with blocking signals which are as much as 70 dB stronger than the desired signal. Auxiliary blocks include clock and LO synthesizers as well as a serial peripheral interface (SPI) port.
Features
- 10-300 MHz Input Frequency
- Baseband (I/Q) Digital Output
- 10-150 kHz Output Signal Bandwidth
- 12 dB SSB NF
- > -5 dBm IIP3 (High IIP3 Mode)
- 25 dB Continuous AGC Range + 16
dB Gain Step - Support for LO and Sampling Clock Synthesis
- Programmable Decimation Rate,
Output Format - AAF cutoff, AGC and Synthesizer
settings - 300 W Input Impedance
- 2.7-3.6 V Supply Voltage
- Low Current: 40 mA typ.
(High IIP3 Mode)
Diagrams
- Enlarge
- 原理图符号和PCB封装
Functional Block Diagram for AD9870
IF Digitizing Subsystem
Functional Block Diagram for AD9870
| Part# | RxTx Function | Channel BW MHz | IF or RF Range MHz | Primary Application | Supply V | Product Description | Price* (1000-4999) | Resolution (Bits) | # Chan | T-Put Rate |
|---|---|---|---|---|---|---|---|---|---|---|
| ADF9010 | Bband Quadrature CODEC | - | - | 900 MHz RFID readers | - | 900MHz ISM Band Analog RF Front End | - | - | 2 | - |
| AD9868 | Bband CODEC | - | - | Broadband Wireline, Home Networking | Multi(+3.3Anlg, +3.3Dig) | 10-Bit DAC/80 MSPS, 10-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications | - | 10 | 1 | 80MSPS |
| AD9865 | Bband CODEC | 35 | DC-40 | Broadband Wireline, Home Networking | Single(+3.3) | 10-Bit DAC/80 MSPS, 10-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications | $10.07 | 10 | 1 | 80MSPS |
| AD9869 | Bband CODEC | 54 | DC-40 | Broadband Wireline, Home Networking | Multi(+3.3Anlg, +3.3Dig), Single(+3.3) | 12-Bit DAC/80 MSPS, 12-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications | $18.27 | 12 | 1 | 80MSPS |
| AD9866 | Bband CODEC | 35 | DC-40 | Broadband Wireline, Home Networking | Single(+3.3) | 12-Bit DAC/80 MSPS 12-Bit ADC, Mixed-Signal Front-End for Broadband Modem Applications | $18.77 | 12 | 1 | 80MSPS |
| AD9863 | Bband Quadrature CODEC | 25/40 | DC-40 | Broadband Wireless | Single(+3), Single(+3.3) | Dual, 12-Bit DAC/12-Bit 50/80 MSPS ADC, Mixed-Signal Front-End Processor (MxFE) For Bband Apps | $21.68 | 12 | 2 | 50MSPS |
| AD9861-50 | Bband Quadrature CODEC | 25 | DC-40 | Broadband Wireless | Single(+3), Single(+3.3) | Dual 10-Bit DAC/Dual 50 MSPS ADC Mixed-Signal Front-End (MxFE) For Broadband Comms Apps | $10.84 | 10 | 2 | 50MSPS |
| AD9861-80 | Bband Quadrature CODEC | 40 | DC-40 | Broadband Wireless | Single(+3), Single(+3.3) | Dual 10-Bit DAC/Dual 80 MSPS ADC Mixed-Signal Front-End (MxFE) For Broadband Comms Apps | $10.84 | 10 | 2 | 80MSPS |
| AD9862 | Bband Quadrature CODEC | 32 | DC-100 | Broadband Wireless | Single(+3.3) | Dual 14-Bit DAC/Dual 12-Bit ADC Mixed Sig Front-End (MxFE) for Bband Comms, Rx&Tx PGA, Digital SSB | $30.11 | 12 | 2 | 64MSPS |
| AD9860 | Bband Quadrature CODEC | 32 | DC-100 | Broadband Wireless | Single(+3.3) | Dual 12-Bit DAC/Dual 10-Bit ADC Mixed Sig Front-End (MxFE) for Bband Comms, Rx&Tx PGA, Digital SSB | $13.90 | 10 | 2 | 64MSPS |
| AD6600 | IF-to-Bits Rx Subsys | 5 to 10 | 70-250 | Wireless Infrastructure | Multi(+3.3, +5), Single(+5) | 11-Bit, 1-Channel 20MSPS, or 2-Channel 10 MSPS Gain-Ranging ADC with RSSI | $38.96 | 11 | 2 | 20MSPS |
| AD9864 | IF-to-Bits Rx Subsys | 0.007 to 0.270 | 10-300 | Narrowband Radio, Portable & Mobile Radio | Single(+3), Single(+3.3) | 24-Bit Bandpass Sigma-Delta ADC/IF Digitizing Subsystem | $10.07 | 24 | 1 | 375kSPS |
| AD9874 | IF-to-Bits Rx Subsys | 0.007 to 0.270 | 10-300 | Narrowband Radio, Portable & Mobile Radio | Single(+3), Single(+3.3) | 24-Bit Bandpass Sigma-Delta ADC IF Digitizing Subsystem | $15.14 | 24 | 1 | 541.5kSPS |
| AD6650 | IF-to-Bits Rx Subsys | 3.5 | 70-300 | Wireless Infrastructure | Single(+3), Single(+3.3) | 16/24-Bit, 1 MSPS, Diversity IF-to-Baseband GSM/EDGE Narrowband Receiver | $20.64 | 24 | 2 | 1MSPS |
| AD9969 | Multi-Chan Bband CODEC | 8 | DC-70 | Cable Modem/Set Top Box | Single(+3.3) | 3.3 V CMOS MxFE Mixed Signal Front End for broadband Set Top Box And Cable Modem applications |