25673DV
DC to 25 GHz Divide-by-8
Prescaler (Die)
Data Sheet
Applications
•
•
•
Phase-locked loop (PLL) applications from DC to 25 GHz
Point-to-point and point-to-multipoint digital radios
Broadband test and measurement equipment
Features
•
•
•
•
Wide frequency range: DC to 25 GHz
High input power sensitivity: –20 dBm typical
Supports single-ended and differential operation
Single +3.0 to +3.4 V power supply
•
•
•
•
Low supply current: 64 mA typical
Available in die form
Also available in QFN plastic package or
LGA ceramic package
Evaluation board available
Description
The 25673DV divide-by-8 prescaler is designed
for a wide range of communications and
broadband test and measurement applications
from DC to 25 GHz. It is typically used in high-
frequency phase-locked loop (PLL) oscillator and
signal-path down conversion circuits.
The 25673DV operates from a single +3.0 to
+3.4 V power supply and is available in die form.
This part is also available in 3 x 3 mm quad flat no
lead (QFN) plastic package, or in a 7 x 7 mm land
grid array (LGA) ceramic package. Please contact
Inphi to obtain data sheets for these versions.
The packaged parts are also available on an
evaluation board.
2007-05-31
25673DV-D_DS_Ver2.0
Inphi Proprietary
Page 1 of 12
Block Diagram
V
CC
50
Ω
50
Ω
D
Dn
V
CC
50
Ω
50
Ω
Q
Qn
D
Dn
Q
Qn
D
Dn
Q
Qn
RFOUTp
RFOUTn
DFF
DFF
DFF
RFINp
RFINn
CK
CKn
CK
CKn
CK
CKn
Absolute Maximum Ratings
•
•
Stresses beyond those listed here may cause permanent damage to the device.
These are stress ratings only. Functional operation of the device at these or any other conditions
beyond those indicated in the “Operating Conditions” and “Electrical Specifications” of this datasheet is
not implied.
Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Parameter
Symbol
Conditions
Min
Max
Unit
•
Power Supply Voltage
CW RF Input Power
DC Input Voltage
DC Output Voltage
Junction Temperature - Die
Case Temperature
Shipping/Storage Temperature
Humidity
V
CC
P
IN
(CW)
V
RFIN
V
RFOUT
T
J
T
C
T
STORE
RH
–0.5
---
V
CC
-2
V
CC
-1.5
–40
–55
–65
0
+3.6
+5
V
CC
+0.6
V
CC
+1.0
+175
+125
+125
100
V
dBm
V
V
°C
°C
°C
%
Operating Conditions
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Power Supply Voltage
Supply Current
Operating Temperature (Junction)
Operating Temperature (Case)
Thermal Resistance
2007-05-31
V
CC
I
CC
T
J
T
C
R
JC
25673DV-D_DS_Ver2.0
+3.0
52
–20
–40
---
+3.3
64
---
---
---
+3.4
75
+125
+85
54
V
mA
°C
°C
°C/W
Inphi Proprietary
Page 2 of 12
Electrical Specifications
!
WARNING
– To prevent damage to the part:
•
DC power must be turned off prior to connecting or disconnecting any cables.
Electrical specifications guaranteed when the part is operated within the specified operating conditions.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Max Input Frequency
Min Input Frequency
1
F
IN
(max)
F
IN
(min)
< 25 GHz, V
CMIN
≤
V
CC
25
---
10
6
–4
–10
–16
–8
10
–3
---
---
---
---
---
---
---
---
26
0.5
---
---
> –10
> –20
> –25
> –15
---
0
–65
–35
–32
–11
1.3
30
-148
---
---
1.0
---
---
4
4
4
4
---
---
---
---
---
---
---
---
---
none
GHz
GHz
dB
dB
dBm
dBm
dBm
dBm
dB
dBm
dBm
dBm
dBc
dBc
ps
ps
dBc/Hz
dBc
Input Return Loss
RL
IN
< 25 GHz, V
CMIN
>
V
CC
1 – 4 GHz (sine wave)
Single ended, AC coupled
4 – 8 GHz (sine wave)
Single ended, AC coupled
8 – 20 GHz (sine wave)
Single ended, AC coupled
20 – 24 GHz (sine wave)
Single ended, AC coupled
Input Power Range
2
P
IN
Output Return Loss
Output Power
Reverse Leakage (output power
appearing at input ports)
Harmonics
Jitter rms
Output Rise/Fall Time
SSB Phase Noise
@ 100 kHz offset
Spurious Output Power
3
RL
OUT
P
OUT
< 13 GHz
Single ended, AC coupled,
F
IN
= 24 GHz
Both RF outputs terminated
(For F
IN
= 12.5 to 25 GHz)
One RF output terminated
P
IN
= 0 dBm, F
IN
= 24 GHz
P
IN
= 0 dBm, F
IN
= 24 GHz
F
IN
= 24 GHz
20% – 80%, F
IN
= 24 GHz
F
IN
= 25 GHz
All Input Frequencies
P
LEAKAGE
2F
OUT
3F
OUT
t
r
/t
f
Φ
Notes:
1
For sine wave input signal. Prescaler will operate down to DC with a square wave signal.
2
For digital square wave inputs, the minimum input amplitude should be 300 mVpp (differential or single-ended) over
the frequency range of DC to 25 GHz. Note: The minimum slew rate needs to be 1 V/ns.
3
The Spurious Output Power measured was too low to be statistically significant.
2007-05-31
25673DV-D_DS_Ver2.0
Inphi Proprietary
Page 3 of 12
Typical Operating Characteristics
* This data was taken on 25673DV-QFN. *
4
0
-4
Input Sensitivity (dBm)
Input Sensitivity vs. Input Frequency
VCC = 3.3 V, Temperature = 25 C
Recommended Operating Window
(minimum specified values)
3.00
2.00
1.00
0.00
-1.00
-2.00
-3.00
Output Power vs. Input Frequency with Power Supply as
a Parameter: Pin=4dBm, T=25C
-20
-24
-28
-32
-36
-40
-44
0
5
10
FIN (GHz)
Pout (dBm)
-8
-12
-16
Vcc = 3.3 V
15
20
25
0
5
10
FIN (GHz)
15
20
25
Figure 1.
Input sensitivity over input frequency for
Vcc = 3.3V at an ambient temperature of 25 C
Figure 2.
Output power (single-ended) versus input
frequency for Vcc = 3.3V and Pin = 4 dBm at 25 C
SSB Phase Noise at 25 C and 0dBm
-80
Phase Noise (dBc/Hz)
Vcc=3.0 V
Vcc=3.3 V
Vcc=3.5 V
Noise floor
SSB Phase Noise at 25 C and Vcc = 3.3V
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
1.E+01
Pin=-8 dBm
Pin=0dBm
Pin=+4 dBm
Noise floor
-140
-150
-160
-170
-180
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
Phase Noise (dBc/Hz)
-90
-100
-110
-120
-130
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
Offset Frequency (Hz)
Offset Frequency (HZ)
Figure 3.
SSB phase noise for Fin = 25 GHz and
Pin = 0 dBm at 25 C over supply voltage
Figure 4.
SSB phase noise for Fin = 25 GHz and
Vcc = 3.3V at 25 C over input power
2007-05-31
25673DV-D_DS_Ver2.0
Inphi Proprietary
Page 4 of 12
Typical Operating Characteristics (cont’d.)
* This data was taken on 25673DV-QFN. *
2nd Harmonic vs. Input Frequency with Power Supply
as a Parameter: Pin=0dBm, T=25C
0
-10
0
-2
3rd Harmonic (dBc)
-4
-6
-8
-10
-12
-14
-16
3rd Harmonic vs. Input Frequency with Power Supply as
a Parameter: Pin=0dBm, T=25C
2nd Harmonic (dBc)
-20
-30
-40
-50
-60
-70
0
5
10
FIN (GHz)
15
20
25
3.3
T=25
VCC as a
parameter
VCC as a
parameter
T=25
3.3
0
5
10
15
20
25
FIN (GHz)
Figure 5.
Second harmonic power versus input
frequency at Vcc = 3.3V, Pin = 0 dBm at 25 C
Figure 6.
Third harmonic power versus input
frequency at Vcc = 3.3V, Pin = 0 dBm at 25 C
0
-10
Pfeedthru (dBc)
-20
-30
-40
-50
Feedthru Power vs. Input Frequency with Power Supply
as a Parameter: Pin=0dBm, T=25C
VCC as a
parameter
T=25
3.3
-60
0
5
10
15
20
25
FIN (GHz)
Figure 7.
Feedthru power vs. Input Frequency at
Vcc = 3.3 V, Pin = 0 dBm at 25 °C
2007-05-31
25673DV-D_DS_Ver2.0
Inphi Proprietary
Page 5 of 12
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