Datasheet

InternalClockGenerationand
2x-32xPLL ClockMultiplier
CLK2
CLK2C
LPFCLKVDD DVDD
x2
x2
x2
x2
FIR1
AVDD
GND
RESETB
EXTIO
EXTLO
1.2 V
Reference
BIASJ
IOUTA1
IOUTA2
16-bDAC
2-8xFdata
FIR4
IOUTB1
IOUTB2
16-bDAC
FIR3
x
sin(x)
x
sin(x)
TXENABLE
DA[15:0]
DB[15:0]
CLKO_CLK1
LOCK_CLK1C
QMC
B-Offset
QMC
A-Offset
B
gain
A
gain
SIFControl
SCLKSDENB
SDOSDIO
Input FIFO /
Demux
sin
32-bitNCO
cos
Full Mixer (FMIX)
Quadrature Modulator
Correction (QMC):
Phase & Gain
x2
x2
FIR2
2x – 8xInterpolation
SYNC
CLKOUT
LOCK
Updated: 2-Oct -07
IOVDD
67 taps 11 taps19 taps
9 taps
VFUSE
DA7 DA6
DA5
DA4 DA3
DA2 DA1 DA0
CLKO_CLK1
LOCK_CLK1C
DB0 DB1 DB2 DB3 DB4 DB5
DB6
DB7
DB8
DB9
DB10
DB11
DVDD
DB12
DB13
DB14
DB15
VFUSE
SDO
SDIO
SCLK
SDENB
LPF DVDD AVDD AVDD
IOUTB1 IOUTB2
EXTLO BIASJ EXTIO AVDD
IOUTA2 IOUTA1
AVDD AVDD DVDD RESETB
DA8
DA9
DA10
DA11
DA12
DA13
DVDD
DA14
DA15
IOVDD
SYNC
TXENABLE
GND
CLK2C
CLK2
CLKVDD
DAC5688
RGCPackage
64QFN,9x9mm
(TopView)
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48
DAC5688
SLLS880C –DECEMBER 2007–REVISED AUGUST 2010 www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
FUNCTIONAL BLOCK DIAGRAM
PINOUT
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Product Folder Link(s): DAC5688