The HTG-ADC16 and HTG-DAC16 modules plug into FMC HPC
or HSPC slots in Vita 57.1 or 57.4 compliant FPGA
carrier boards and
provide access to four 16-bit ADC and two or four DAC channels. The
4-channel DAC (requiring 16 serial transceivers) only works with
Vita57.4 compliant FPGA carrier cards such as
HTG-9100,
HTG-830, or
HTG-828
The modules use Texas Instruments ADS54J60 ADC
and DAC39J84 DAC devices with
JESD204B support. The ADS54J60 is
a low-power, wide-bandwidth, 16-bit, 1.0-GSPS, dual-channel,
analog-to-digital converter (ADC). Designed for high signal-to-noise
ratio (SNR), the device delivers a noise floor of –159 dBFS/Hz for
applications aiming for highest dynamic range over a wide instantaneous
bandwidth. The device supports the JESD204B serial interface with data
rates up to 10.0 Gbps, supporting two or four lanes per ADC. The
buffered analog input provides uniform input impedance across a wide
frequency range while minimizing sample-and-hold glitch energy. Each ADC
channel optionally can be connected to a wideband digital down-converter
(DDC) block. The ADS54J60 provides excellent spurious-free dynamic range
(SFDR) over a large input frequency range with very low power
consumption.
The JESD204B interface reduces the number of interface
lines, allowing high system integration density. An internal
phase-locked loop (PLL) multiplies the ADC sampling clock to derive the
bit clock that is used to serialize the 16-bit data from each channel.
Features
- 16-Bit Resolution, Dual-Chanel, 1-GSPS ADC
- Noise Floor: –159 dBFS/Hz
- Spectral Performance (fIN = 170
MHz at –1 dBFS):
- SNR: 70 dBFS
- NSD: –157 dBFS/Hz
- SFDR: 86 dBc
- SFDR: 96 dBc (Except HD2, HD3, and
Interleaving Tones)
- Spectral Performance (fIN = 350
MHz at –1 dBFS):
- SNR: 67.5 dBFS
- NSD: –154.5 dBFS/Hz
- SFDR: 75 dBc
- SFDR: 85 dBc (Except HD2, HD3, and
Interleaving Tones)
- Channel Isolation: 100 dBc at fIN
= 170 MHz
- Input Full-Scale: 1.9 VPP
- Input Bandwidth (3 dB): 700 MHz
- On-Chip Dither
- Integrated Wideband DDC Block
- JESD204B Interface with Subclass 1 Support:
- 2 Lanes per ADC at 10.0 Gbps
- 4 Lanes per ADC at 5.0 Gbps
- Support for Multi-Chip Synchronization
- Power Dissipation: 1.35 W/ch at 1 GSPS
The DAC39J84 is a low power,
16-bit, quad-channel, 2.8 GSPS digital to analog converter (DAC)
with JESD204B interface.Digital data is
input to the device through 1, 2, 4 or 8 configurable serial
JESD204B lanes running up to 12.5 Gbps with on-chip termination
and programmable equalization. The interface allows JESD204B
Subclass 1 SYSREF based deterministic latency and full
synchronization of multiple devices.
The device includes features that simplify the
design of complex transmit architectures. Fully bypassable 2x to
16x digital interpolation filters with over 90 dB of stop-band
attenuation simplify the data interface and reconstruction
filters. An on-chip 48-bit Numerically Controlled Oscillator
(NCO) and independent complex mixers allow flexible and accurate
carrier placement.
A high-performance low jitter PLL simplifies
clocking of the device without significant impact on the dynamic
range. The digital Quadrature Modulator Correction (QMC) and
Group Delay Correction (QDC) enable complete IQ compensation for
gain, offset, phase, and group delay between channels in direct
up-conversion applications. A programmable Power Amplifier (PA)
protection mechanism is available to provide PA protection in
cases when the abnormal power behavior of the input data is
detected.
Features
- Resolution: 16-Bit
- Maximum Sample Rate: 2.8GSPS
- Maximum Input Data Rate: 1.25GSPS
- JESD204B Interface
- 8 JESD204B Serial Input Lanes
- 12.5 Gbps Maximum Bit Rate per Lane
- Subclass 1 Multi-DAC Synchronization
- On-Chip Very Low Jitter PLL
- Selectable 1x –16x Interpolation
- Independent Complex Mixers with 48-bit
NCO/
or ±n×Fs/8
- Wideband Digital Quadrature Modulator
Correction
- Sinx/x Correction Filters
- Fractional Sample Group Delay Correction
- Multi-Band Mode: Digital Summation of
Independent
Complex Signals
- 3/4-Wire Serial Control Bus (SPI)
- Integrated Temperature Sensor
- JTAG Boundary Scan
- Pin-Compatible with Quad-Channel
DAC37J84/
DAC38J84 Family
- Power Dissipation: 1.8W at 2.8GSPS
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