DAC5675A-SP_15 Datasheet, PDF (1/31 Pages) Texas Instruments – Radiation-Tolerant, 14-Bit, 400-MSPS Digital-to-Analog Converter

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DAC5675A-SP
SGLS387G – JULY 2007 – REVISED MARCH 2015
DAC5675A-SP Radiation-Tolerant, 14-Bit, 400-MSPS Digital-to-Analog Converter
1 Features
•1 QMLV (QML Class V) MIL-PRF-38535 Qualified,
SMD 5962-07204
– 5962-0720401VXC – Qualified over the
Military Temperature Range (–55°C to 125°C)
– 5962-0720402VXC – Qualified over Reduced
Temperature Range (–55°C to 115°C) for
Improved Dynamic Performance
• High-Performance 52-Pin Ceramic Quad Flat
Pack (HFG)
• 400-MSPS Update Rate
• LVDS-Compatible Input Interface
• Spurious-Free Dynamic Range (SFDR) to Nyquist
– 69 dBc at 70 MHz IF, 400 MSPS
• W-CDMA Adjacent Channel Power Ratio (ACPR)
– 73 dBc at 30.72 MHz IF, 122.88 MSPS
– 71 dBc at 61.44 MHz IF, 245.76 MSPS
• Differential Scalable Current Outputs: 2 to 20 mA
• On-Chip 1.2-V Reference
• Single 3.3-V Supply Operation
• Power Dissipation: 660 mW at ƒ_CLK = 400 MSPS,
ƒ_OUT = 20 MHz
2 Applications
• Radiation Hardened Digital to Analog (DAC)
Applications
• Space Satellite RF Data Transmission
• Cellular Base Transceiver Station Transmit
Channel:
– CDMA: WCDMA, CDMA2000, IS-95
– TDMA: GSM, IS-136, EDGE/GPRS
– Supports Single-Carrier and Multicarrier
Applications
• Engineering Evaluation (/EM) Samples are
Available ⁽¹⁾
3 Description
The DAC5675A-SP is a radiation-tolerant, 14-bit
resolution high-speed digital-to-analog converter
(DAC) primarily suited for space satellite applications.
The DAC5675A-SP is designed for high-speed digital
data transmission in wired and wireless
communication systems, high-frequency direct digital
synthesis (DDS), and waveform reconstruction in test
and measurement applications. The DAC5675A-SP
has excellent SFDR at high intermediate frequencies,
which makes it well suited for multicarrier
transmission in TDMA and CDMA based cellular base
transceiver stations (BTSs).
The DAC5675A-SP operates from a single supply
voltage of 3.3 V. Power dissipation is 660 mW at
ƒ_CLK = 400 MSPS, ƒ_OUT = 70 MHz. The DAC5675A-
SP provides a nominal full-scale differential current
output of 20 mA, supporting both single-ended and
differential applications. The output current can be
directly fed to the load with no additional external
output buffer required. The output is referred to the
analog supply voltage AV_DD.
The DAC5675A-SP includes a low-voltage differential
signaling (LVDS) interface for high-speed digital data
input. LVDS features a low differential voltage swing
with a low constant power consumption across
frequency, allowing for high-speed data transmission
with low noise levels (low electromagnetic
interference (EMI)).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DAC5675A-SP
HFG (52 CQFP) 19.05 mm × 19.05 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
SLEEP
EXTIO
BIASJ
Bandgap
Reference
1.2V
DAC5675A
Control Amp
Current
Source
Array
Output
Current
Switches
(1) These units are intended for engineering evaluation only.
They are processed to a non-compliant flow (for example, no
burn-in) and are tested to temperature rating of 25°C only.
These units are not suitable for qualification, production,
radiation testing or flight use. Parts are not warranted for
performance on full MIL specified temperature range of –55°C
to 125°C or operating life.
1
D[13:0]A
D[13:0]B
14
LVDS
Input
Interface
14
Input
Latches
Decoder
DAC
Latch
+
Drivers
CLK
CLKC
Clock Distribution
AV_DD(4x) AGND(4x)
DV_DD(2x) DGND(2x)
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.