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PDF IDTF1320NBGI Data sheet ( Hoja de datos )
| Número de pieza | IDTF1320NBGI | |
| Descripción | DPD Demodulator | |
| Fabricantes | Integrated Device Technology | |
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DPD Demodulator for PA Linearization
GENERAL DESCRIPTION
This document describes the specification for the
IDTF1320 Digital Pre-Distortion Demodulator for PA
linearization. This device is one of 2 variants to cover
common UTRA bands. See the Part# Matrix below for
details.
COMPETITIVE ADVANTAGE
In typical basestation transmitters a digital pre-distortion
loop is employed to improve the Transmitter
performance. The signal coming out of the PA is
sampled so that the I&Q data at Baseband can be pre-
distorted before being sent to the Tx DAC to counteract
the distortion inherent in the downstream PA. The signal
coupled from the PA 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 IDTF1320, 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,
2 SP2Ts
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
IDDatTaFs1h3ee2t0DANFT1BA3SGH0IE0ET
ARY DATASHEET
550MHz to 1150MHz
FEATURES (I OR Q PATH)
Wide flat performance IF BW
Wide RF and LO BWs (~ 0.8 GHz)
Ideal for Multi-Carrier Systems
Drives ADC directly
Ultra linear +43 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: 262 mA
DEVICE BLOCK DIAGRAM
CSb SDI CLK
RFIN_Y
RFIN_X
SPI DEC
SPLIT
.
RFSW
LOSW
LOIN_A
LOIN_B
RF VCO
IFI
90O
STBY
Bias
Control
2
ISET
IBIAS
IFQ
ORDERING INFORMATION
Omit IDT
prefix
0.8 mm height Tape &
package
Reel
IDTF1320NBGI8
RF product Line
Green Industrial
Temp range
IDT Zero-DistortionTM, Glitch-FreeTM DPD Receiver
1
Rev4 January 2014
1 page  
DPD Demodulator for PA Linearization
IDDatTaFs1h3ee2t0DANFT1BA3SGH0IE0ET
ARY DATASHEET
550MHz to 1150MHz
IDTF1320 SPECIFICATION - CONTINUED
Refer to Typical Application Circuit when operated with VCC = +5.0V, TCASE = 25C, , FRF = 860 MHz, FLO = 1060 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 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
0.5
dB
Attenuator Step Accuracy
DNL
0.2
dB
Attenuator Abs. Accuracy
INL 0.2 0.5 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
LO Switch Isolation
ISOLOSW
-45 -36 dB
RF Switch Isolation
RF Switch and attenuator settling times3
ISORFSW
-45 -43 dB
EN bit on
ENON
100
EN bit off
RF switched X to Y (no Y
signal)
RF switched Y to X (no Y
signal)
LO switched A to B (no B
signal)
LO switched B to A (no B
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: 1050MHz, +3dBm
RF_INX: 850MHz, -10dBm
ENOFF
RFSWXY
RFSWYX
LOSWAB
LOSWBA
ATTSETL
50
130
200
40
20
300
300
250
300
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 
DPD Demodulator for PA Linearization
TOCS [Fixed IF] (-1-)
GAIN vs. TCASE [Low Side Injection]
17
16
15
14
13
12
11
10
9
8
-40degC / 5.00V / 0dBm / IF_I
-40degC / 5.00V / 0dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
100degC / 5.00V / 0dBm / IF_I
100degC / 5.00V / 0dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
GAIN vs. VCC [Low Side Injection]
17
16
15
14
13
12
11
10
9
8
25degC / 5.25V / 0dBm / IF_I
25degC / 5.25V / 0dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
25degC / 4.75V / 0dBm / IF_I
25degC / 4.75V / 0dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
GAIN vs. LO level [Low Side Injection]
17
16
15
14
13
12
11
10
9
8
25degC / 5.00V / 3dBm / IF_I
25degC / 5.00V / 3dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
25degC / 5.00V / -3dBm / IF_I
25degC / 5.00V / -3dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
IDDatTaFs1h3ee2t0DANFT1BA3SGH0IE0ET
ARY DATASHEET
550MHz to 1150MHz
GAIN vs. TCASE [High Side Injection]
17
16
15
14
13
12
11
10
9
8
-40degC / 5.00V / 0dBm / IF_I
-40degC / 5.00V / 0dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
100degC / 5.00V / 0dBm / IF_I
100degC / 5.00V / 0dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
GAIN vs. VCC [High Side Injection]
17
16
15
14
13
12
11
10
9
8
25degC / 5.25V / 0dBm / IF_I
25degC / 5.25V / 0dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
25degC / 4.75V / 0dBm / IF_I
25degC / 4.75V / 0dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
GAIN vs. LO level [High Side Injection]
17
16
15
14
13
12
11
10
9
8
25degC / 5.00V / 3dBm / IF_I
25degC / 5.00V / 3dBm / IF_Q
7
25degC / 5.00V / 0dBm / IF_I
25degC / 5.00V / 0dBm / IF_Q
25degC / 5.00V / -3dBm / IF_I
25degC / 5.00V / -3dBm / IF_Q
6
5
0.50 0.60 0.70 0.80 0.90 1.00 1.10
RF Frequency (GHz)
1.20
IDT Zero-DistortionTM, Glitch-FreeTM DPD Receiver
11
Rev4 January 2014
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet IDTF1320NBGI.PDF ] | |
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