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IT3022D 10 GHz, 6 dB-Gain Differential Buffer
Description
The IT3022D is a differential buffer amplifier designed for use in applications up to 10 GHz. It supports fully differential operation as well as single-ended-to-differential and singleended-to-single-ended operation. The IT3022D is ideal for any RF application in which a highly-linear, low-gain differential buffer is required, such as microwave communications, test equipment, digital receiver systems, front ends for digital sampling oscilloscopes, and single-ended differential transformers. The amplifier provides excellent linear performance. AC and DC input coupling are accommodated as well as DC-coupled SCFL differential inputs.
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Features
Buffer function 3-dB bandwidth: 10 GHz Single-ended gain: 6 dB Standard bias supply: -5 V, +5 V Power consumption: 1.35 W 1% total harmonic distortion at Pout: 0 dBm Low group delay Low jitter CMRR: >20 dB at 10 GHz AC and DC input coupling (SCFL compatible) AC and DC output coupling
Absolute Maximum Ratings
Sym bol Vee Vcc Vd Vm Tch Tstg
Param eters/conditions Pow er supply voltage Pow er supply voltage Applied voltage at data input (differential) Applied voltage at data input (single ended) Maximum channel temperature Storage temperature
Min. -8 0
Max. 0 8 3 1.5 5 150
Units V V V V mA C C
Ioffset (+),(-) Offset control current -65
150
Recommended Operating Conditions
Symbol
Tc BR Vee Vcc Iee Icc Voffset (+)/(-) Vm Vd HL s.e. HL diff.
Parameters/conditions
Operating temperature range (Tcase) Bit error rate Negative power supply voltage Positive power supply voltage Negative supply current Positive supply current Offset control voltage Applied peak-peak voltage at data input (single ended) (differential) High Level (single-ended input) High Level (differential input) Input/output interface
Min.
0 -5.25 4.75 115 115 -5
Typ.
Max.
85 12.5 -4.75 5.25 155 155 5 500
Units
C GHz V V mA mA V mVpp mVpp mV mV
o
-5 5 135 135
300
300 500 0 150 250 -500 150 150 AC and DC coupled
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This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 1
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
Electrical Characteristics
Symbol Parameters/conditions Min.
1150 1350 5 9 13 13
Typ.
1350 1500 6 10 15 15
Max.
1550 1650 0.4
Units
mW Ohm dB dBpp GHz dB dB % mV ps ps dB dB
At ambient temperature Vee =-5 V, Vcc = +5 V (Measured on connectorized www..com evaluation board)
P Zin offset G G B3dB RLin RLout Vout Voutdc Trse Tfse NF CMRR
Power consumption Input impedance at offset pins Small signal gain Gain flatness (DC to 1 GHz) 3 dB bandwidth Input return loss (up to 10 GHz) Output return loss (up to 10 GHz) Vout sensitiviy vs bias (Vee = -5 V +/-5%, Vcc = 5 V +/5%) DC output voltage (DC coupled to 50 ohm load) Output rise time (single-ended) Output fall time (single-ended) Noise figure Common mode rejection ratio
10
70 40 45 7.5
+/-11 180 45 50 8
20
S-Parameter Data
At ambient temperature Vee = -5 V, Vcc = +5 V
iT3022, Gain Vdd=5V, Vee=-5V
20.0 18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0.0 -2.0 -4.0 -6.0 -8.0 -10.0 0.0 1.0
0.0 -2.0 -4.0 -6.0 -8.0 -10.0 -12.0 -14.0 -16.0 -18.0 -20.0 -22.0 -24.0 -26.0 -28.0 -30.0 0.0 1.0
iT3022, Input Return Loss Vcc=5V, Vee=-5V
S 2 1 (d B )
iT3022_0deg iT3022_180deg
Measured on connectorized evaluation board. Single-ended input, inverting (/Q), and non-inverting (Q) outputs are shown in the same plot.
S 11 (dB )
iT3022_0deg iT3022_180deg
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Freq. (GHz)
Freq. (GHz)
iT3022 Output Return Loss, Vcc=5V, Vee=-5V
0.0 -2.0 -4.0 -6.0 -8.0 -10.0
iT3022 , Gain Vdd=5V, Vee=-5V
10 9
iT3022_0deg iT3022_180deg
8 7
S22 (dB)
S21 (dB)
0.5 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5
-12.0 -14.0 -16.0 -18.0 -20.0 -22.0 -24.0 -26.0 -28.0 -30.0
6 5 4 3 2 1 0 1.E+04
1.E+05
1.E+06
1.E+07
1.E+08
1.E+09
1.E+10
Freq. (GHz)
Freq. (Hz)
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 2
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
S21 vs. Temperature
Vee = -5 V, Vcc = +5 V
S21 (dB)
iT3022, S21 vs. Temperature Vdd=5V, Vee=-5V
20 18 16 14 12 10 8 6 4 2 0 -2 -4 -6 -8 -10 0.0 1.0
T=25C T=50C
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T=70C
T=0C
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Freq. (GHz)
Eye Diagram Performance
Vee = -5 V, Vcc = +5 V
Linear performance Bit rate: 10 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
Linear performance Bit rate: 5 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
Linear performance Bit rate: 2 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
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This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 3
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
Time Domain Performance
Vee = -5 V Vcc = +5 V
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Bit rate: 1 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
Bit rate: 2 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
Bit rate: 5 Gb/s Vin = 300 mVpp, Vout = 600 mVpp
Power Performance and Total Harmonic Distortion
P1dB & Psat (dBm)
iT3022 P1dB & Psat
10 9 8 7 6 5 4 3 2 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 2
THD iT3022
-20 -25
THD
-30
THD (dBc)
iT3022 Psat iT3022 P1dB
-35 -40 -45 -50 -55 -60
At ambient temperature Single-ended input Vee = -5 V Vcc = +5 V
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
11
12
Freq. (GHz)
Freq. (GHz)
P1dB and Psat vs. frequency
Total harmonic distortion Single-ended Pout = 0dBm
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This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 4
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
OIP3 Data
Ambient temperature Single-ended input Vee = -5 V, Vcc = +5 V
OIP3 (dBm)
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 2 3 4 5 6 7 8 9 10
iT3022 OIP3
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Freq. (GHz)
Device Diagram
Voffset (+)
1 k
Vcc
Din /Din
Voffset(-)
1 k
Q /Q
Vee
Recommended Operational Setup
Voffset (+)
Vcc = 5 V
1 F 560 pF Din
Q Output /Q
Bias sequence * Apply +5.0 V at Vcc * Apply -5 V at Vee
Input /Din
Voffset(-)
IT3022D
Vee = -5.0 V
1 F 560 pF
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This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 5
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
Assembly Diagram
0.1 uF VCC
560 pF
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DIN /DIN
Q /Q
VEE 0.1 uF
36 34 32
560 pF
30
28
26
1 3 5 7
25 23 21 19
8
Pin P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11 P12 P13 P14 P15 P16 P17 P18 Designation GND GND Vinp GND Vinn GND GND VimnNot used GND GND Vcc1 Vee1 GND Vcc2 GND Ref. Res Not used
10
12
14
Pin P19 P20 P21 P22 P23 P24 P25 P26 P27 P28 P29 P30 P31 P32 P33 P34 P35 P36
16
18
Description Ground Ground Data Output Ground Data Output + Ground Ground
Description Ground Ground Data Input + Ground Data Input Ground Ground Input DC Offset Control Ground Ground Positive Supply (+5V) Negative Supply (-5 V) Ground Positive Supply (+5V) Ground 50ohm resistor
Designation GND GND Voutn GND Voutp GND GND Not used Not used GND GND Vcc3 Vee1 GND Vcc4 GND Not used Vimn+
Ground Ground Positive Supply (+5V) Negative Supply (-5 V) Ground Positive Supply (+5V) Ground Input DC Offset Control +
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This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 6
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938
IT3022D 10 GHz, 6 dB-Gain Differential Buffer
Chip Layout and Bond Pad Locations
(Back of chip is RF and DC ground)
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Chip size tolerance: 20 m Chip thickness: 4 mil with a tolerance of 0.4 mil
www.iterrac.com
This is a Production data sheet. See "Product Status Definitions" on Web site or catalog for product development status. October 3, 2006 Doc.4229 Rev 0 7
iTerra Communications 2400 Geng Road, Ste. 100, Palo Alto, CA 94303 Phone (650) 424-1937, Fax (650) 424-1938

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