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PDF LTC5588-1 Data sheet ( Hoja de datos )
| Número de pieza | LTC5588-1 | |
| Descripción | 200MHz to 6000MHz Quadrature Modulator | |
| Fabricantes | Linear Technology Corporation | |
| Logotipo |  |
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www.DataSheet.in
LTC5588-1
200MHz to 6000MHz
Quadrature Modulator
with Ultrahigh OIP3
Features
Description
n Frequency Range: 200MHz to 6000MHz
n Output IP3: +31dBm Typical at 2140MHz (Uncalibrated)
+35dBm Typical (User Optimized)
n Single Pin Calibration to Optimize OIP3
n Low Output Noise Floor at 6MHz Offset:
No RF: –160.6dBm/Hz
POUT = 5dBm: –155.5dBm/Hz
n Integrated LO Buffer and LO Quadrature Phase
Generator
n High Impedance DC Interface to Baseband Inputs
with 0.5V Common Mode Voltage*
n 50Ω Single-Ended LO and RF Ports
n 3.3V Operation
n Fast Turn-Off/On: 10ns/17ns
n 24-Lead UTQFN 4mm × 4mm Package
Applications
n LTE, GSM/EDGE, W-CDMA, TD-SCDMA, CDMA2K,
WiMax Basestations
n Image Reject Upconverters
n Point-to-Point Microwave Links
n Broadcast Modulator
n Military Radio
The LTC®5588-1 is a direct conversion I/Q modulator
designed for high performance wireless applications. It
allows direct modulation of an RF signal using differential
baseband I and Q signals. It supports LTE, GSM, EDGE,
TD-SCDMA, CDMA, CDMA2000, W-CDMA, WiMax and
other communication standards. It can also be config-
ured as an image reject upconverting mixer, by applying
90° phase-shifted signals to the I and Q inputs. The I/Q
baseband inputs drive double-balanced mixers. An on-
chip balun converts the differential mixer signals to a 50Ω
single-ended RF output. Four balanced I and Q baseband
input ports are DC-coupled with a common mode volt-
age level of 0.5V. The LO path consists of an LO buffer
with single-ended or differential inputs and precision
quadrature generators to drive the mixers. The supply
voltage range is 3.15V to 3.45V. An external voltage can
be applied to the LINOPT pin to further improve 3rd‑order
linearity performance.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
*Contact LTC Marketing for other common mode voltage versions.
Typical Application
200MHz to 6000MHz Direct Conversion Transmitter Application
I-DAC
EN
Q-DAC
BASEBAND
GENERATOR
VmI
I-CHANNEL
0o
90o
Q-CHANNEL
VCC
LTC5588-1
6.8pF
1nF + 4.7µF
3.3V
s2 RF = 200MHz
TO 6000MHz
PA
0.2pF
VmI
1nF
50Ω
LINOPT
1nF
VCO/SYNTHESIZER
LTC2630
55881 TA01a
ACPR, AltCPR and ACPR, AltCPR
with Optimized LINOPT Voltage vs RF
Output Power at 2.14GHz for
W-CDMA 1, 2 and 4 Carriers
–40 ACPR
ACPR (OPT)
–50
AltCPR
AltCPR (OPT)
DOWNLINK TEST
–60
MODEL 64 DPCH
fBB = 140MHz,
fLO = 2280MHz
4C
2C
1C
–70
–80
–90
–20 –15 –10
–5
0
5
RF OUTPUT POWER PER CARRIER (dBm)
55881 TA01b
55881f
1 page  
www.DataSheet.in
LTC5588-1
E lectrical Characteristics VCC = 3.3V, EN = 3.3V, TA = 25°C, LOP AC-terminated with 50Ω to ground,
BBPI,
and Q
BBMI, BBPQ, BBMQ common mode DC
90° shifted, lower sideband selection,
voltage
LINOPT
pViCnMfBloBa=tin0g.5,VuDnCl,esIsanodthQerbwaisseebnaontdedin. pTuetstsicgirncaulit=i1s0s0hkoHwznCiWn,F1igVuPr-eP(8DI.FF)
each,
I
SYMBOL PARAMETER
POUT
OP1dB
Absolute Output Power
Output 1dB Compression
OIP2 Output 2nd-Order Intercept
OIP3 Output 3rd-Order Intercept
NFloor
RF Output Noise Floor
IR Image Rejection
LOFT Carrier Leakage (LO Feedthrough)
Baseband Inputs (BBPI, BBMI, BBPQ, BBMQ)
BWBB
Baseband Bandwidth
Ib(BB)
Baseband Input Current
RIN(SE)
Input Resistance
VCMBB
DC Common Mode Voltage
VSWING
Amplitude Swing
Power Supply (VCC1, VCC2)
VCC Supply Voltage
ICC(ON)
Supply Current
ICC(OFF)
Supply Current, Sleep Mode
tON Turn-On Time
tOFF Turn-Off Time
tON(IR)
Image Rejection Settling
tON(LO)
LO Suppression Settling
VLINOPT(ON) LINOPT Voltage
VLINOPT(OFF) LINOPT Voltage, Sleep Mode
Enable Pin
Enable
Input High Voltage
Input High Current
Sleep
Input Low Voltage
Input Low Current
CONDITIONS
1VP-P(DIFF) CW Signal, I and Q
(Notes 4, 5)
(Notes 4, 6)
No Baseband AC Input Signal (Note 3)
(Note 7)
(Note 7)
–1dB Bandwidth, RSOURCE = 25Ω, Single Ended
Single Ended
Single Ended
Externally Applied
No Hard Clipping, Single Ended
EN = High
EN = 0V
EN = Low to High (Notes 8, 13)
EN = High to Low (Notes 9, 13)
EN = Low to High, <–60dBc (Note 13)
EN = Low to High, <–60dBm (Note 13)
Floating LINOPT Pin, EN = High
Floating LINOPT Pin, EN = Low
EN = High
EN = 3.3V
EN = Low
EN = 0V
MIN
3.15
275
2
TYP
–5.1
1.9
35.4
17.9
–156.7
–32.3
–30.2
430
–136
–3
0.5
0.86
3.3
303
33
17
10
80
85
2.56
3.3
80
33
MAX UNITS
dBm
dBm
dBm
dBm
dBm/Hz
dBc
dBm
MHz
µA
kΩ
V
VP-P
3.45 V
325 mA
900 µA
ns
ns
ns
ns
V
V
V
nA
1V
µA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC5588-1 is guaranteed functional over the operating
temperature range from –40°C to 85°C.
Note 3: At 6MHz offset from the LO signal frequency. 100nF between BBPI
and BBMI, 100nF between BBPQ and BBMQ.
Note 4: Baseband inputs are driven with 4.5MHz and 5.5MHz tones.
Note 5: IM2 is measured at fLO – 10MHz.
Note 6: IM3 is measured at fLO – 3.5MHz and fLO – 6.5MHz.
OIP3 = lowest of (1.5 • P{fLO-5.5MHz} – 0.5 • P{fLO-6.5MHz})
and (1.5 • P{fLO-4.5MHz} – 0.5 • P{fLO-3.5MHz}).
Note 7: Without image or LO feedthrough nulling (unadjusted).
Note 8: RF power is within 10% of final value.
Note 9: RF power is at least 30dB down from its ON state.
Note 10: RF matching center frequency is set below band center
frequency in order to align RF passband center frequency with band center
frequency.
Note 11: An external voltage is optimally set at the LINOPT pin for best
output 3rd-order intercept.
Note 12: I and Q baseband Input signal = 10MHz CW, 0.8VP-P, DIFF each,
I and Q 0° shifted.
Note 13: fLOM = 2.14GHz, PLOM = 0dBm, fBB = 134MHz; LO feedthrough
and image rejection is nulled during previous EN = high cycles, C5 = C6 =
10pF; C13 = 0; Extra 680µF capacitors (SANYO 6SEPC680M) from TP1 to
ground and TP2 to ground, RF noise filter with 93MHz bandwidth is used.
55881f
5 Page 
www.DataSheet.in
LTC5588-1
Typical Performance Characteristics AanCd‑te5r.m5MinHaztefodrwOiItPh350aΩndtoOIgPr2o,uonrd,elBsBePbIa, sBeBbManI,dOBiuBntPppuuQtt,fBreBqMuQenicnypu=t1s000.k5HVzD,CI,
and
and
VCC = 3.3V, EN = 3.3V, TA = 25°C, LOP input
Q1V9P0-P°(sDhIFiFft)e, db,alsoewbearndsiidnepbuatnfdresqeuleencctiioens,=LI4N.5OMPTHzpin
floating, unless otherwise noted. Test circuit is shown in Figure 8.
Return Loss vs Frequency
0
LOM PORT, EN = HIGH
LOP PORT, EN = HIGH
–5
RF PORT, EN = HIGH
RF PORT, EN = LOW
Output Noise Floor vs RF
Frequency (No AC Baseband Input
Signal, PLOM = 0dBm)
–156
NOTE 3
–158
–160
Output Noise Floor vs RF
Frequency (No AC Baseband Input
Signal, PLOM = 10dBm)
–156
NOTE 3
–158
–160
–10 –162 –162
–15
–20
–25
0
LO PORT WITH
BD1631J50100A00
LOM PORT, EN = LOW
LOP PORT, EN = LOW
12
34
56
FREQUENCY (GHz)
55881 G46
LO Feedthrough to RF Output vs
LO Frequency After Nulling at 25°C
(PLOM = 0dBm)
–40
3.3V, 85°C
3.45V, 25°C
3.3V, 25°C
3.3V, –40°C
–50 3.15V, 25°C 5 PARTS SHOWN
–60
–164
–166
–168
–170
0
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
123456
RF FREQUENCY (GHz)
55881 G47
LO Feedthrough to RF Output vs
LO Frequency After Nulling at 25°C
(PLOM = 10dBm)
–40
3.3V, 85°C
3.45V, 25°C
3.3V, 25°C
3.3V, –40°C
–50 3.15V, 25°C 5 PARTS SHOWN
–60
–164
–166
–168
–170
0
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
123456
RF FREQUENCY (GHz)
55881 G48
Image Rejection vs LO Frequency
After Nulling at 25°C
(PLOM = 0dBm)
–40 5 PARTS SHOWN
–50
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
–60
–70 –70
–70
–80 –80 –80
–90
0
123
LO FREQUENCY (GHz)
4
55881 G49
–90
0
Image Rejection vs LO Frequency
After Nulling at 25°C
(PLOM = 10dBm)
–40
3.3V, 85°C
3.45V, 25°C
3.3V, 25°C
3.3V, –40°C
–50 3.15V, 25°C 5 PARTS SHOWN
123
LO FREQUENCY (GHz)
4
55881 G50
–90
0
123
LO FREQUENCY (GHz)
LO Feedthrough to RF Output vs
LO Frequency (PLOM = –10dBm)
–20
–30
4
55881 G51
–60
–70
–80
–90
0
123
LO FREQUENCY (GHz)
4
55881 G51
–40
–50
–60
0
3.3V, 85°C
3.3V, 25°C
3.15V, 25°C
3.45V, 25°C
3.3V, –40°C
12 3
LO FREQUENCY (GHz)
4
55881 G53
55881f
11
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| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet LTC5588-1.PDF ] | |
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