AFE7422 Texas instruments

AFE7422

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AFE7422

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Описание

The AFE7422 is a dual-channel, wideband, RF-sampling analog front end (AFE) based on 14-bit, 9-GSPS DACs and 14-bit, 3-GSPS ADCs. With operation at an RF of up to 6 GHz, this device enables direct RF sampling into the C-band frequency range without the need for additional frequency conversions stages. This improvement in density and flexibility enables high-channel-count, multimission systems.The DAC signal paths support interpolation and digital up conversion options that deliver up to 1200 MHz of signal bandwidth. The differential output path includes a digital step attenuator (DSA), which enables tuning of output power.Each ADC input path includes a dual DSA and RF and Digital power detectors. Flexible decimation options provide optimization of data bandwidth and a decimation bypass mode is also available for widest signal bandwidth.An 8-lane (8 TX + 8 RX) subclass-1 compliant JESD204B interface operates at up to 15 Gbps. A bypassable on-chip PLL simplifies clock operation with an optional clock output.

Two, 14-bit, 9-GSPS DACs
- Up to 1200-MHz signal bandwidth
- 1 DSA per channel tunes output power
Two, 14-Bit, 3-GSPS ADCs
- Up to 1500-MHz signal bandwidth
- NSD: –151 dBFS/Hz
- AC performance at f_IN = 2.6 GHz, –3 dBFS
  - SNR: 55 dBFS
  - SFDR: 73 dBc HD2 and HD3
  - SFDR: 91 dBc worst spur
- 2 DSA per channel extends dynamic range
- RF and digital power detectors
RF frequency range: 10 MHz to 6 GHz
Fast frequency hopping < 1 µs
Receive digital signal path:
- Bypassable quad DDC per ADC
- 3-phase coherent 32-bit NCOs per DDC
- Decimation ratio: 2x to 32x
Transmit digital signal path:
- Quad DUC per DAC with 32-bit NCOs
- Interpolation ratio: 6x to 36x
- Sin(x)/x correction and configurable delay
- Power amplifier protection (PAP)
JESD204B interface:
- 8 transceivers at up to 15 Gbps
- Subclass 1 multichip synchronization
Clocks:
- Internal PLL and VCO with bypass option
- Clock output up to 3 GHz with clock divider
DAC power dissipation: 1.8 W/ch at 9 GSPS
ADC power dissipation: 1.9 W/ch at 3 GSPS
Package: 17-mm x 17-mm FC BGA, 0.8-mm pitch

Sample rate (max) (Msps)	3000
Resolution (Bits)	14
Number of input channels	2
Interface type	JESD204B
Analog input BW (MHz)	6000
Features	High-performance, Input buffer
Rating	Catalog
Power consumption (typ) (mW)	8200
Architecture	Pipeline
SNR (dB)	60
SFDR (dB)	70
Operating temperature range (°C)	-40 to 85
Input buffer	Yes