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PDF IDTF1370NBGI Data sheet ( Hoja de datos )

Número de pieza IDTF1370NBGI
Descripción DPD Demodulator
Fabricantes Integrated Device Technology 
Logotipo Integrated Device Technology Logotipo



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DPD Demodulator for PA Linearization
GENERAL DESCRIPTION
This document describes the specification for the
IDTF1370 Digital Pre-Distortion Demodulator for PA
linearization. This series of devices is offered in 2
variants to cover common UTRA bands. See part
number matrix below for additional detail.
COMPETITIVE ADVANTAGE
In typical basestation transmitters digital pre-distortion is
employed to improve the Transmitter performance. The
signal coming out of the PA is sampled and the incoming
Tx chain I&Q data is pre-distorted to counteract the
distortion inherent in the PA. The PA signal is adjusted
via a digital step attenuator to a lower level and then
sub-sampled at an IF frequency of ~200 MHz which
necessitates the need for a highly linear demodulator to
downmix to quadrature IF from the Transmit frequency.
By sampling IF_I and IF_Q independently and then
digitally combining these signals, an effective doubling of
the sample rate can be achieved. Any distortion in this
path will degrade the performance of the DPD algorithm.
By utilizing an ultra-linear demodulator w/integrated DSA
such as the IDTF1370, the ACLR and/or power
consumption of the full Tx system can be improved
significantly.
DPD full path ACLR: 1 dB
Icc: DPD function Power
Consumption 40%
Zero-DistortionTM Demod
eliminates 2 IF amps
Integrates 2 BPFs, 2 Baluns,
SPDT RF switch
Glitch-FreeTM gain control
Glitch-FreeTTMM
PART# MATRIX
Part#
F1320
F1370
RF range
550 - 1150
1300 - 2900
UTRA
bands
5,6,8,12,13,
14,17
1,2,3,4,9,10
7,21, 24, 38
IF freq
range
20 - 350
20 - 500
Typ.
Gain
12.5
12.5
Injection
High Side
or Low Side
High Side
or Low Side
IDTF1370NBGI
Datasheet
1300MHz to 2900MHz
FEATURES (I OR Q PATH)
Wide flat performance IF BW
Wide RF and LO BWs (~ 1.6 GHz)
Ideal for Multi-Carrier Systems
Drives ADC directly
Ultra linear +41 dBm IP3O
Low Noise Figure
Excellent ACLR performance
200 Ω output impedance
Fully integrated DPD demodulator
6x6 36 pin package
Standby Mode w/Fast Recovery
ICC: 275 mA
DEVICE BLOCK DIAGRAM
CSb SDI CLK
SPI DEC
SPLIT
.
IFI
90O
STBY
Bias
Control
2
ISET
IBIAS
RFIN_Y
RFIN_X
LOIN
RF VCO
IFQ
ORDERING INFORMATION
Omit IDT
prefix
0.8 mm height Tape &
package
Reel
IDTF1370NBGI8
RF product Line
Green Industrial
Temp range
IDT Zero-DistortionTM, Glitch-FreeTM DPD Receiver
1
Rev4, January 2014

1 page




IDTF1370NBGI pdf
IDTF1370NBGI
Datasheet
DPD Demodulator for PA Linearization
1300MHz to 2900MHz
IDTF1370 SPECIFICATION - CONTINUED
PRELIMINARY DATASHEET
Specifications apply at VCC = +5.0V, TC = 25C, FRF = 2100 MHz, FLO = 2300 MHz, Gain = GMAX, PLO = 0 dBm, TC= +25°C, STBY = GND
unless otherwise noted. Full Lineup measured through to I or Q path. IF Transformers and RF input trace losses de-embedded.
Parameter
Comment
Symbol min typ max units
Attenuator Glitching
Step from 15.5 to 16 dB
Step from 16 to 15.5 dB
Measure maximum excursion
ATTNG
0.7
dB
Attenuator Step Accuracy
DNL
0.2
dB
Attenuator Abs. Accuracy
INL 0.2 0.75 dB
Attenuator Resolution
LSB 0.5
dB
Serial Clock Speed
SPI 3 wire bus
FCLOCK
20 50 MHz
Data to Clock Setup
SPI 3 wire bus
TS 3
ns
Data to Clock Hold
Clock to CS Setup
Clock Pulse Width
SPI 3 wire bus
SPI 3 wire bus
SPI 3 wire bus
TH 3
TEN 3
TW 5
ns
ns
ns
RF Switch Isolation
FRF < 2.0 GHz
RF Switch and attenuator settling times3
ISORFSW
-41
dBc
EN bit on
ENON
100
EN bit off
RF switched X to Y (no Y
signal)
RF switched Y to X (no Y
signal)
Attenuator switched 0dB
to 25.5dB (max)
Attenuator switched
25.5dB (max) to 0dB
Attenuator switched
15.5dB to 16dB
Attenuator switched 16dB
to 15.5dB
LO_INA: 2300MHz, 0dBm
RF_INX: 2100MHz, -11dBm
ENOFF
RFSWXY
RFSWYX
ATTSETL
50
150
200
300
300
250
250
nsec
SPECIFICATION NOTES:
1 Items in min/max columns in bold italics are Guaranteed by Test
2 All other Items in min/max columns are Guaranteed by Design Characterization
3 Excludes SPI write time
IDT Zero-DistortionTM, Glitch-FreeTM DPD Receiver
5
Rev4, January 2014

5 Page





IDTF1370NBGI arduino
DPD Demodulator for PA Linearization
TOCS F1370 [FIXED LO VS TEMP] (-1-)
GAIN [LO = 1.80 GHZ, LOW SIDE INJECTION]
16
14
12
10
8
6
4
2
0
0
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IP3O [LO = 1.80 GHZ, LOW SIDE INJECTION]
48
44
40
36
32
28
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
24
0
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IP2O [LO = 1.80 GHZ, LOW SIDE INJECTION]
90
80
70
60
50
40
30
20
10
0
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IDTF1370NBGI
Datasheet
1300MHz to 2900MHz
PRELIMINARY DATASHEET
GAIN [LO = 2.92 GHZ, HIGH SIDE INJECTION]
16
14
12
10
8
6
4
2
0
0
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IP3O [LO = 2.92 GHZ, HIGH SIDE INJECTION]
48
44
40
36
32
28
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
24
0
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IP2O [LO = 2.92 GHZ, HIGH SIDE INJECTION]
90
80
70
60
50
40
30
20
10
0
-40degC / 5.00V / 0dBm / IFI
25degC / 5.00V / 0dBm / IFI
105degC / 5.00V / 0dBm / IFI
-40degC / 5.00V / 0dBm / IFQ
25degC / 5.00V / 0dBm / IFQ
105degC / 5.00V / 0dBm / IFQ
50 100 150 200 250 300 350 400 450 500 550
IF Frequency (MHz)
IDT Zero-DistortionTM, Glitch-FreeTM DPD Receiver
11
Rev4, January 2014

11 Page







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