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TEMIC Semiconductors
TEMIC Semiconductors

U2752M Datasheet Preview

U2752M Datasheet

Digital I/Q-Generator Chip

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U2752M pdf
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U2752M
Digital I/Q-Generator Chip for DAB
Description
The U2752M is an integrated circuit in CMOS
technology for splitting a digital DAB signal into its
quadrature components. The device is designed for DAB
(ETS 300 401) applications.
Electrostatic sensitive device.
Observe precautions for handling.
Features
D U2752M splits a digital DAB input signal into its
quadrature components
D Quadrature matching: 0 dB in magnitude,
1.6° in phase
D Clock frequency: 4.096 MHz
D Input signal
– Center frequency: 3.072 MHz
Bandwidth: 1.536 MHz
Data format:
8 bit, 4.096 MHz in 2’s complement representation
D Output signal
– Select pin for baseband or 1.024-MHz center
frequency
I-, Q- components in time multiplex
Data format:
8 bit, 4.096 MHz in 2’s complement representation
Block Diagram
8 DATA_IN
RESET
CLOCK
2 AP–I
MUX
2 AP–Q
IQDATA 7
DATA_RI
VDD VSS
Figure 1. Block diagram
96 12265
MIX_OFF
Ordering Information
Extended Type Number
U2752M-AFL
U2752M-AFLG3
Package
SO24
SO24
Remarks
Taping according to IEC-286-3
Rev. A1, 29-Jun-98
Preliminary Information
1 (6)



TEMIC Semiconductors
TEMIC Semiconductors

U2752M Datasheet Preview

U2752M Datasheet

Digital I/Q-Generator Chip

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U2752M pdf
U2752M
Pin Description
Pin Signal
Description
PAD Type
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ1
MIX_OFF
Low: I/Q in baseband representation, High. I/Q in IF representation
BUFINCDN
2
RESET
Reset signal, high active
BUFINCDN
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ3 VSS Ground
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ4
DATA_IN0
Data input (LSB)
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ5
DATA_IN1
Data input
BUFINMOS
6
DATA_IN2
Data input
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ7
DATA_IN3
Data input
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ8
DATA_IN4
Data input
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ9
DATA_IN5
Data input
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ10
DATA_IN6
Data input
BUFINMOS
11
DATA_IN7
Data input (MSB)
BUFINMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ12 VSS Ground
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ13
CLOCK
System clock 4.096 MHz
BUFTGMOS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ14
DATA_RI
Internal data_ri signal
BU2OUT
15
VDD
Power supply
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ16
IQDATA7
Data_output, I and Q multiplex (MSB)
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ17
IQDATA6
Data_output, I and Q multiplex
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ18
IQDATA5
Data_output, I and Q multiplex
BU2OUT
19
IQDATA4
Data_output, I and Q multiplex
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ20
IQDATA3
Data_output, I and Q multiplex
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ21
IQDATA2
Data_output, I and Q multiplex
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ22
IQDATA1
Data_output, I and Q multiplex
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ23
IQDATA0
Data_output, I and Q multiplex (LSB)
BU2OUT
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ24
VDD
Power supply
MIX_OFF 1
RESET 2
24 VDD
23 IQDATA0
VSS 3
22 IQDATA1
DATA_IN0 4
DATA_IN1 5
21 IQDATA2
20 IQDATA3
DATA_IN2 6
19 IQDATA4
DATA_IN3 7
18 IQDATA5
DATA_IN4 8
17 IQDATA6
DATA_IN5 9
16 IQDATA7
DATA_IN6 10
15 VDD
DATA_IN7 11
14 DATA_RI
VSS 12
13 CLOCK
96 12266
Figure 2. Pinning
Functional Description
The U2752M generates the in-phase and quadrature
components of the DAB input signal with a quadrature
matching of 0 dB in magnitude and a maximum value of
1.6° in phase. The clock of the device is 4.096 MHz.
The data format of the input signal DATA_IN is 8 bits,
sampled with 4.096 MHz in 2’s complement represen-
tation. Its center frequency is 3.072 MHz with a
bandwidth of 1536 MHz. The U2752M uses decimation
and common filter techniques to generate the quadrature
components.
The output interface consists of the split signal IQDATA
with a data format of 8 bits, 4.096 MHz in 2’s comple-
ment representation. The in-phase (I) and quadrature (Q)
components are represented in time division multiplex
format with a selection signal DATA_RI of 4.096 MHz.
The output representation in baseband or 1.024-MHz
center frequency is selected by the MIX_OFF signal. For
utilization together with TEMIC’s U2752M device, the
baseband representation (MIX_OFF = ‘0’) must be
selected.
2 (6)
Rev. A1, 29-Jun-98
Preliminary Information


Part Number U2752M
Description Digital I/Q-Generator Chip
Maker TEMIC Semiconductors
Total Page 6 Pages
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