U2760B-AFSG3 [TEMIC]
CT2-RX/TX IC; CT2 -RX / TX IC
| 型号： | U2760B-AFSG3 |
| 厂家： | 
TEMIC SEMICONDUCTORS |
| 描述： | CT2-RX/TX IC |
| 文件： | 总14页 (文件大小：168K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
U2760B
CT2-RX/TX IC
Description
TM
The IC for digital cordless telephone application is AMDs CT2 PhoX controller AM 79C4xx a complete
fabricated using TEMIC’s most advanced UHF process. CT2 IC kit is available.
It covers the CT2 band (864 MHz to 868 MHz) as well as
the CT2 Plus band (up to 952 MHz). The RX/TX circuit
Electrostatic sensitive device.
provides the down conversion to the data stream and the
Observe precautions for handling.
up conversion from the first IF. In conjunction with
TEMIC’s RF front end, Twin PLL, I/Q modulator and
Features
Benefits
Low supply voltage 2.9 V typical (min. 2.7 V)
Low power consumption results in extended talk time
Provides down conversion to the data stream,
up conversion from the first IF
Few external components and very small package
save space
Integrated UHF and VHF VCOs
Low noise figure of RX path (NF 10 dB)
RX and TX power down
First IF filter used for transmit as well receive mode
Temperature compensated logarithmic Receiver
Signal Strength Indicator (RSSI) with a 75 dB
dynamic range
Low power consumption in RX and TX mode
(<20 mA typ.)
SSO28 plastic package
Block Diagram (Simplified Schematic)
MX1/3 MX1/3
MX2/4 MX2/4
MX2 out
28
LIMIT in VCC
20
GND
19
outp
outn
in
nin
26 25
1
2
4
RX enable
MX1 in
15
21
27
11
LIMIT
MX1
MX2
RSSI out
QUAD
RSSI
VCO1 ref
VCO1 tank
VCO1 out
7
6
5
10 pF
DEMOD
VCO1
MX4
VCO2
12
13
DEMOD out
COMP in
100k
100k
MX4 outn
MX4 outp
TX enable
22
23
24
MX3
COMP
COMP cap
14
94 9532
9
8
3
17
18
16
10
RXdata
VCC
vco/lf
VCO2 VCO2 VCO2
ref tank out
GND
vco/lf
MX3 in
Figure 1.
Rev. A3, 05-Oct-98
1 (14)
U2760B
Ordering Information
Extended Type Number
U2760B-AFS
Package
SSO28
SSO28
Remarks
Rail, MOQ 600pcs.
Tape + reel, MOQ 4000 pcs.
U2760B-AFS G3
Functional Description
MX1
COMP
The comparator circuit with 100 k input resistor and
external input biasing has a 10 mV hysteresis. It is
designed to square up the demodulated data signal.
Mixer 1 converts the RF signal to the first IF. It has a high
impedance, unsymmetrical input and a symmetrical open
collector output.
MX3
MX2
The third mixer converts the 800 kHz signal coming from
the modulator circuit to the IF frequency. It has a high
impedance, unsymmetrical input and a symmetrical open
collector output.
The second mixer provides the down conversion to the
second IF. An external SAW filter is placed at its input to
provide rejection of the image frequency and spurious
signals that went through the RF filtering.
MX4
LIMITER / RSSI
This mixer is designed for the up conversion of the RF
frequency. It has a high impedance, unsymmetrical input
and a symmetrical open collector output. The image
rejection is obtained by external RF filtering.
This block contains a high gain (100 dB) amplifier,
providing a limited signal at the second IF frequency for
the demodulation, as well as a signal strength indicator
providing an output voltage proportional to the input
power.
The same first IF filter is used for the transmit path and
the receive path. In the transmit path, this filter is
supposed to eliminate the mixing products from MX3, in
particular, the harmonics of the IF frequency.
Demod
VCO1
The quadrature demodulator in the receiving path
contains an internal 10 pF quadrature capacitor to couple
the IF signal to the external Tank providing the 90 degree
phase shift. An external bit slicer reshapes the bits, a
sample and hold circuit maintains the average DC value
at the demodulator when switching the signal between
transmission and reception.
The UHF VCO covers the frequency band up to
700 MHz. For external VCO application this circuit can
be used as a buffer stage.
VCO2
This VCO covers a frequency band up to 400 MHz.
2 (14)
Rev. A3, 05-Oct-98
U2760B
Pin Description
Pin
1
Symbol
Function
MX2/4in
Mixer2/ Mixer4 input
1
28
MX2/4in
MX2out
2
MX2/4nin Mixer2/ Mixer4 ref. input
3
MX3in
LIMITin
VCO1out
Mixer3 input
2
3
4
5
MX2/4nin
MX3in
27 RSSIout
26
4
Limiter/RSSI input
VCO1 output (to PLL)
5
MX1/3outp
6
VCO1tank VCO1 resonator
7
VCO1ref
VCO1 resonator, to be blocked
MX1/3outn
TXenable
MX4outp
25
24
23
LIMITin
VCO1out
8
GNDvco/lf Ground VCO, low frequency
parts
9
VCCvco/lf Power supply VCO/LF parts
10
11
RXdata
QUAD
RX data output
Quadrature filter
VCO1tank 6
7
8
9
VCO1ref
22 MX4outn
21
12 DEMODout Demodulator output
COMPin Comparator input
COMPcap Comparator blocking capacitor
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
MX1in
GNDvco/If
VCCvco/If
RXenable
VCO2out
VCO2ref
RX enable
20 VCC
VCO2 output (to PLL)
VCO2 resonator, to be blocked
GND
19
RXdata
QUAD
10
11
VCO2tank VCO2 resonator
VCO2tank
18
GND
VCC
Ground
Power supply voltage
Mixer1 input
DEMODout 12
COMPin 13
17 VCO2ref
MX1in
MX4outn
MX4outp
TXenable
Mixer 4 output n
Mixer 4 output p
TX enable
16
15
VCO2out
RXenable
14
COMPcab
MX1/3outn Mixer1/ Mixer3 output n
MX1/3outp Mixer1/ Mixer3 output p
Figure 2. Pinning
RSSIout
MX2out
Signal strength output
Mixer2 output
Rev. A3, 05-Oct-98
3 (14)
U2760B
Pin Functions
Pin
Symbol
Pin
Function
Equivalent Circuit
Voltage
1
MX2/4in
1.5
Mixer2/ Mixer4 input
To MX4
To MX2
2
3
MX2/4nin
1.5
Mixer2/ Mixer4 complementary
input
Pin 1 is the input of the mixers, Pin 2
can be used for differential input
signal, or should be connected to
GND via a bypass capacitor
1
2
TX
RX
19
MX3in
1.7 (RX) Mixer3 input
To MX3
2.4 (TX) complementary input is internally
connected to GND via a bypass
capacitor
3
TX
19
4
LIMITin
QUAD
2.1
1.5
1.2
Limiter/RSSI input
Quadrature filter
Vcc
10pF
11
Vcc
12
Ref
4
11
12 DEMODout
Demodulator output
5
6
7
VCO1out
VCO1tank
VCO1ref
1.1
1.5
1.5
VCO1 output (to PLL)
VCO1 resonator
9
6
7
5
VCO1 reference, to be blocked. This
Pin is also internally connected to
GND via a bypass capacitor
8
8
9
GNDvco/lf
VCCvco/lf
–
–
Ground VCO, low frequency parts
Power supply VCO/LF parts
4 (14)
Rev. A3, 05-Oct-98
U2760B
Pin
10
Symbol
RXdata
Pin
Voltage
Function
Equivalent Circuit
0 to 2.9 RX data output
Vcc
50k
13
14
15
COMPin
COMPcap
RXenable
1.2
1.2
–
Comparator input
100k
100k
10
13
14
Comparator blocking capacitor
RX enable
Vcc
15
16
17
18
VCO2out
VCO2ref
VCO2tank
1.1
1.6
1.6
VCO2 output (to PLL)
VCO2 resonator, to be blocked
VCO2 resonator
9
17
18
16
8
19
20
21
GND
VCC
–
–
Ground (mixer parts)
Power supply (mixer parts)
MX1in
1.5
Mixer1 input
To MX1
complimentary input is internally
connected to GND via a bypass
capacitor
21
19
RX
22
23
MX4outn
MX4outp
–
–
Mixer 4 output n
Mixer 4 output p
23
22
LO1
from
MX4 in
Rev. A3, 05-Oct-98
5 (14)
U2760B
Pin
Symbol
Pin
Function
Equivalent Circuit
Voltage
24
TXenable
–
TX enable
Vcc
24
25 MX1/3outn
26 MX1/3outp
–
–
Mixer1/ Mixer3 output n
Mixer1/ Mixer3 output p
LO1
LO2
from
MX1 in
from
MX3 in
27
RSSIout
0.2 to 2.7 Signal strength output
Vcc
Vcc
27
25k
28
MX2out
1.0 (RX) Mixer2 output
2.4 (TX)
Vcc
800
28
6 (14)
Rev. A3, 05-Oct-98
U2760B
Absolute Maximum Ratings
Parameters
Symbol
Value
Unit
V
Supply voltage
V
CC
0 to +5
Input voltages
V
in
0 to V
V
CC
Pins 1, 2, 3, 4, 13, 14, 15, 21 and 24
Input voltages
Pins 6, 7, 17 and 18
V
in
1.5
V
Junction temperature
T
125
°C
°C
j
Storage temperature range
T
stg
–40 to +125
Thermal Resistance
Parameters
Symbol
Value
130
Unit
K/W
Junction ambient SSO28
R
thJA
Operating Conditions
Parameters
Symbol
Value
Unit
V
Supply voltage
V
CC
2.7 to 3.6
–5 to +45
Operating temperature
T
amb
°C
Electrical Characteristics: Receiver Input Mixer (MX1)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fRF = 866.05 MHz, fIF1 = 240.05 MHz.
Parameters
Supply voltage range
Supply current
Input impedance
Input frequency
Output frequency
Power gain
Test Conditions / Pins
Pin 20
Symbol
Min.
2.7
Typ.
2.9
3
Max.
3.6
Unit
V
V
CC
@ V = 2.9 V, Pin 20
Is
mA
k
CC
Pin 21
Pin 21
Zin
fin
3
1000
300
MHz
MHz
dB
Pins 25 and 26
Pins 21, 25 and 26
Pins 21, 25 and 26
Pins 21, 25 and 26
Pins 21, 25 and 26
fout
Gp
240
8
Noise figure
NF
8
10
dB
Compression
P_1dB
IIP3
–18
–8
dBm
dBm
Third order input
intercept point
LO to RF isolation
Pin 21
IsolLO
20
dB
dB
LO (IF/2) response
@ Pin = –84 dBm, Pin 21
–10
Rev. A3, 05-Oct-98
7 (14)
U2760B
Electrical Characteristics: Receiver IF Mixer (MX2)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fIF1 = 240.05 MHz, fIF2 = 800 kHz.
Parameters
Supply voltage range
Supply current
Input impedance
Input frequency
Output frequency
Power gain
Test Conditions / Pins
Pin 20
Symbol
Min.
2.7
Typ.
2.9
3
Max.
3.6
Unit
V
V
CC
@ V = 2.9 V, Pin 20
Is
mA
CC
Pin 1
Pin 1
Zin
fin
130
10
200
300
300
15
MHz
MHz
dB
Pin 28
fout
Gp
0.8
11
Pins 1 and 28
Pins 1 and 28
Pins 1 and 28
Pins 1 and 28
Noise figure
NF
20
dB
Compression
P_1dB
IIP3
–20
–10
dBm
dBm
Third order input
intercept point
LO to RF isolation
Pin 1
IsolLO
20
dB
dB
LO (IF/2) response
@ Pin = –40 dBm, Pin 1
–35
Electrical Characteristics: RSSI/Limiter Amplifier
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fLIMIT = 800 kHz.
Parameters
Supply voltage range
Supply current
Input impedance
Voltage gain
Test Conditions / Pins
Pin 9
Symbol
Min.
2.7
Typ.
2.9
Max.
3.6
Unit
V
V
CC
@ Vcc = 2.9 V, Pin 9
Pin 4
Is
1.5
mA
Zin
Gv
1500
100
0.8
Pin 4
dB
MHz
dBm
V
Frequency range
RSSI range
Pin 4
fLIMIT
0.5
– 90
0.2
2.4
– 2
19
5
– 15
0.4
2.6
2
Pins 4 and 27
Pins 4 and 27
Pins 4 and 27
Pins 4 and 27
Pins 27
RSSI voltage at Pmin
RSSI voltage at Pmax
RSSI accuracy
Output impedance
Rise time
V
dB
k
RRSSI
24
29
CRSSI = 1 nF,
CRSSI = 1 nF,
Pin 27
Pin 27
50
s
Fall time
50
s
Electrical Characteristics: Demodulator
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fLIMIT = 800 kHz.
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 9
Symbol
Min.
2.7
Typ.
2.9
Max.
3.6
Unit
V
V
CC
@ Vcc = 2.9 V, Pin 9
Is
Vout
0.2
mA
Output voltage
±18 kHz deviation,
120
mV
rms
Pins 4 and 12
8 (14)
Rev. A3, 05-Oct-98
U2760B
Electrical Characteristics: Comparator
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit
CC
amb
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 9
Symbol
Vcc
Min.
2.7
Typ.
2.9
Max.
3.6
Unit
V
@ Vcc = 2.9 V, Pin 9
Pins 13 and 14
Is
0.15
10
mA
mV
V
Input hysteresis
Output HIGH voltage
RLoad to GND
500 k
2.3
Pin 10
Output LOW voltage
RLoad to V
50 k
0.6
V
CC
Pin 10
Electrical Characteristics Transmitter IF Mixer (MX3)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fin = 800 kHz, fIF = 240.05 MHz.
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 20
Symbol
Min.
2.7
Typ.
2.9
1.3
5
Max.
3.6
Unit
V
V
CC
@ V = 2.9 V, Pin 20
Is
mA
k
CC
Input impedance
Input frequency
Output frequency
Output power
Pin 2
Pin 3
Zin
fin
0.8
250
– 16
15
MHz
MHz
dBm
Pins 25 and 26
fout
Pout
300
v
= 320 mV
inpp
Pins 25 and 26
Noise figure
Pins 2, 25 and 26
NF
25
dB
Electrical Characteristics Transmitter Output Mixer (MX4)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit,
CC
amb
fIF = 240.05 MHz, fRF = 866.05 MHz.
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 20
Symbol
Vcc
Is
Min.
2.7
Typ.
2.9
Max.
3.6
Unit
V
@ V = 2.9 V, Pin 20
3.5
4
mA
CC
Input impedance
Input frequency
Output frequency
Output power
Pin 1
Pin 1
Zin
130
–16
200
300
300
900
MHz
MHz
dBm
Pins 22 and 23
PIn = –22 dBm,
Pins 22 and 23
Pout
– 14
Noise figure
Pins 1, 22 and 23
Pins 22 and 23
Pins 22 and 23
Pins 22 and 23
Pins 22 and 23
Pins 22 and 23
NF
12
dB
LO leakage
LkLO
LkIF
–34
–45
– 55
– 65
– 60
dBm
dBm
dBm
dBm
dBm
IF leakage
(2*IF) leakage
(3*IF) leakage
(n*IF) leakage, n > 3
Lk2IF
Lk3IF
LknIF
Rev. A3, 05-Oct-98
9 (14)
U2760B
Electrical Characteristics: UHF Voltage Controlled Oscillator (VCO1)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit, f = 626 MHz
CC
amb
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 9
Symbol
Min
2.7
Typ
2.9
3
Max
3.6
Unit
V
V
CC
@ Vcc = 2.9 V, Pin 9
Pins 5, 6 and 7
Is
mA
Frequency bandwidth
Phase noise ±100 kHz
Phase noise ±200 kHz
Phase noise ±300 kHz
Phase noise ±400 kHz
Phase noise @ 50 MHz
Output power
fBw
PN
700
MHz
Pins 5, 6 and 7
– 86
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBm
Pins 5, 6 and 7
PN
– 104
– 109
– 125
– 150
Pins 5, 6 and 7
PN
Pins 5, 6 and 7
PN
Pins 5, 6 and 7
PN
50 termination, Pin 5
Pout
– 15
Electrical Characteristics: VHF Voltage Controlled Oscillator (VCO2)
Test conditions (unless otherwise specified): V = 2.9 V, T
= 25°C, referred to application circuit, f = 239.25 MHz
CC
amb
Parameters
Supply voltage range
Supply current
Test Conditions / Pins
Pin 9
Symbol
Vcc
Is
Min
2.7
Typ
2.9
2.5
Max
3.6
Unit
V
@ Vcc = 2.9 V, Pin 9
Pins 16, 17 and 18
Pins 16, 17 and 18
Pins 16, 17 and 18
Pins 16, 17 and 18
Pins 16, 17 and 18
Pins 16, 17 and 18
50 termination, Pin 16
mA
Frequency bandwidth
Phase noise 100 kHz
Phase noise 200 kHz
Phase noise 300 kHz
Phase noise 400 kHz
Phase noise @ 50 MHz
Output power
fBw
PN
400
MHz
– 86
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBm
PN
– 114
– 119
– 135
– 150
PN
PN
PN
Pout
– 15
10 (14)
Rev. A3, 05-Oct-98
U2760B
Applications Information
Figure 3.
Rev. A3, 05-Oct-98
11 (14)
U2760B
Application Circuit
Figure 4.
12 (14)
Rev. A3, 05-Oct-98
U2760B
Package Information
5.7
5.3
Package SSO28
Dimensions in mm
9.10
9.01
4.5
4.3
1.30
0.15
0.15
0.05
0.25
0.65
6.6
6.3
8.45
28
15
technical drawings
according to DIN
specifications
13018
1
14
Rev. A3, 05-Oct-98
13 (14)
U2760B
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC Semiconductor GmbH to
1. Meet all present and future national and international statutory requirements.
2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.
It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as
ozone depleting substances (ODSs).
The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and
forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban
on these substances.
TEMIC Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of
ODSs listed in the following documents.
1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively
2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA
3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.
TEMIC Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting
substances and do not contain such substances.
We reserve the right to make changes to improve technical design and may do so without further notice.
Parameters can vary in different applications. All operating parameters must be validated for each customer
application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized
application, the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of,
directly or indirectly, any claim of personal damage, injury or death associated with such unintended or
unauthorized use.
TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany
Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423
14 (14)
Rev. A3, 05-Oct-98
相关型号：
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