HI5728EVAL1 Intersil, HI5728EVAL1 Datasheet - Page 11

• Manufacturer Part Number: HI5728EVAL1
• Description: EVALUATION PLATFORM TQFPHI5728
• Manufacturer: Intersil

Specifications of HI5728EVAL1

• Number Of Dac's: 2
• Number Of Bits: 10
• Outputs And Type: 2, Differential
• Sampling Rate (per Second): 125M
• Data Interface: Parallel
• Settling Time: 35ns
• Dac Type: Current
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: HI5728
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

NOTE: E6 was mistakenly grounded so R56 should not be populated! E7, however, is correct and can be used to overdrive the internal reference
op amp for increasing the multiplying bandwidth.
QCOMP1
ICOMP1
QOUTB
QOUTA
IOUTB
IOUTA
GROUND
ANALOG
0.1 F
C10
AVDD POWER PLANE
R61
TP2
0
0.1 F
C4
GROUND
DIGITAL
3-11
TP1
R56
R69
0
0
E6
E7
E9 E8
E4 E5
Application Note 9827
SMA1
SMA2
SMA3
SMA4
NOTE: AGND1 and DGND1 are tied together at a single point near the
DAC. Optimum placement for Rgnd was found by iteration while observing
the spectral noise floor.
50
R25
50
R31
50
R34
50
R22
R70
R72
R57
R51
0
0
0
0
Digital Ground Plane
Ground Connection
100
100
R52
R71
50
50
Rgnd 0
SMA5
QOUT
IOUT
SMA6
50 REPRESENTS THE SPECTRUM
ANALYZER INPUT IMPEDANCE.
50 IS THE SPECTRUM ANALYZER
INPUT IMPEDANCE.
V
V
OUT
OUT
= (2 x I
= (2 x Q
Analog Ground Plane
OUT
OUT
x R
x R
EQ
EQ
)V
)V