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Features
* * * *
Gain control in 20-dB steps Very low I/Q amplitude and phase errors High input P1dB Buffered IF OUT available through baseband output
Applications
* Infrastructure digital communication systems * GSM/cellular transceivers * ISM band transceivers Electrostatic sensitive device. Observe precautions for handling.
65 - 300 MHz SiGe IF Receiver / Demodulator T0797
Description
The T0797 is a multi-purpose demodulator RFIC. The silicon monolithic integrated circuit is a designed in Atmels advanced SiGe technology. This demodulator is capable of both quadrature demodulation or direct IF output. Features include switchable gain control on a frequency range from 65 MHz to 300 MHz. The device performs a very low amplitude as well as phase error and allows high input P1dB. The T0797 targets a variety of system applications for communications including 3G wireless.
Block Diagram
Figure 1.
GC1
5
GC2
4 2 1
BBIP BBIN
IFP IFN
8 9
16 15 13 12
BBQP BBQN
LOP LON
Rev. A2, 03-Dec-01
Preliminary Information
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Preliminary Information
Ordering Information
Extended Type Number T0797 Package TSSOP16 Remarks
Pin Configuration
Figure 2.
BBIN BBIP VCC GC2 GC1 GND VCC IFP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 BBQP BBQN VCC LOP LON GND VCC IFN
Pin Description
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol BBIN BBIP VCC GC2 GC1 GND VCC IFP IFN VCC GND LON LOP VCC BBQN BBQP Baseband I-axis negative output Baseband I-axis positive output 5 V power supply Gain control input, stage 2 Gain control input, stage 1 Ground 5 V power supply IF positive input IF negative input 5 V power supply Ground Local oscillator, negative input Local oscillator, positive input 5 V power supply Baseband Q-axis negative output Baseband Q-axis positive output Function
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T0797
Rev. A2, 03-Dec-01
T0797
Absolute Maximum Ratings
All voltages are referred to GND.
Parameter Supply voltage LO input IF input Operating temperature Storage temperature Note: Symbol VCC LOP, LON IFN, IFP TOP Tstg Value 5.5 10 10 -40 to +85 -65 to +150 Unit V dBm V C C
The part may not survive all maximums applied simultaneously
Thermal Resistance
Parameter Junction ambient Symbol RthJA Value tbd Unit K/W
Electrical Characteristics
Test conditions: VCC = 5 V, Tamb = 25C, LO input: 0 dBm@200 MHz IF input: @200.1 MHz, GC1 = 0, GC2 = 0; 0 dBm IF input: @200.1 MHz, GC1 = 1, GC2 = 0; -20 dBm IF input: @200.1 MHz, GC1 = 1, GC2 = 1; -40 dBm
No. 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 Parameters Frequency range Return loss Gain Input P1dB Input IP3 Noise figure Gain Input P1dB Input IP3 Noise figure Gain Input P1dB Input IP3 Noise figure Gain set = high; GC1 = GC2 = 0 Gain set = high; GC1 = 1; GC2 = 0 Gain set = high; GC1 = GC2 = 1 Test Conditions Pin 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 Symbol f RL G P1dB IIP3 NF G P1dB IIP3 NF G P1dB IIP3 NF -3 Min. 65 Typ. 120 220 20 35 -30 -20 6 15 -10 0 10 -5 10 20 30 Max. 300 Unit MHz dB dB dBm dBm dB dB dBm dBm dB dB dBm dBm dB Type* B D A C B D A C B D A C B D IF input (I/Q mixing to baseband)
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Preliminary Information
Rev. A2, 03-Dec-01
3 (10)
Preliminary Information
Electrical Characteristics
Test conditions: VCC = 5 V, Tamb = 25C, LO input: 0 dBm@200 MHz IF input: @200.1 MHz, GC1 = 0, GC2 = 0; 0 dBm IF input: @200.1 MHz, GC1 = 1, GC2 = 0; -20 dBm IF input: @200.1 MHz, GC1 = 1, GC2 = 1; -40 dBm
No. 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 3 3.1 3.2 3.3 3.4 3.5 4 4.1 4.2 5 5.1 5.2 Parameters Frequency range Return loss Gain Input P1dB Input IP3 Noise figure Gain Input P1dB Input IP3 Noise figure Gain Input P1dB Input IP3 Noise figure I/Q Output I/Q output frequency range I/Q output amplitude error I/Q phase error I/Q output common mode voltage I/Q output differential offset voltage LO input LO input level Return loss Miscellaneous Supply voltage Supply current 3, 7, 10, 14 3, 7, 10, 14 VCC ICC 4.75 5 180 5.25 V mA A A 12, 13 12, 13 PLO RLLO -3 0 20 +3 dBm dB D D 1, 2, 15, 16 1, 2, 15, 16 1, 2, 15, 16 1, 2, 15, 16 1, 2, 15, 16 Voffset fI/Q DC -0.2 -2 2.5 10 500 +0.2 +2 MHz dB deg V mV D A A A A Gain set = high; GC1 = GC2 = 0 Gain set = high; GC1 = 1; GC2 = 0 Gain set = high; GC1 = GC2 = 1 Test Conditions Pin 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 8, 9 Symbol f RL G P1dB IIP3 NF G P1dB IIP3 NF G P1dB IIP3 NF Min. 65 Typ. 120 220 20 40 -26 -16 6 20 -6 4 9 0 14 24 30 Max. 300 Unit MHz dB dB dBm dBm dB dB dBm dBm dB dB dBm dBm dB Type* B D A C B D A C B D A C B D Stuck Mixer (DC to LO port - gain-controlled amplifier)
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
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T0797
Rev. A2, 03-Dec-01
T0797
Typical Device Performance
Figure 3. Gain vs. pin high-gain state (11)
35 Gain (dB) 34 33 32 31 30 -40 -38 -36 -34 -32 -30 -28 -26
Pin (dBm )
Figure 4. Gain vs. pin low-gain state (00)
-3 -4 Gain (dB) -5 -6 -7 -8 0 5 Pin (d Bm ) 10 15
Figure 5. Gain vs. pin medium-gain state (10)
16 Gain (dB) 15 14 13 12 11 -20 -18 -16 -14 -12 -10 -8 -6
Pin (dBm )
Preliminary Information
Rev. A2, 03-Dec-01
5 (10)
Preliminary Information
Demo Test Board Schematic
Figure 6.
L4 BBIN C17 C18 BBIP L5 C15 C16 R7 1 2 3 4 5 6 7 8 C7 16 15 14 13 12 11 10 9 C8 C2 C3 R6 C5 C4 L2 BBQN R8 R5 L1 BBQP
5V
R3 GC2 GC1
5V
R1
Vcc
C20
Vcc C11
C21 LOin
T0797
T2
Vcc
C6
Vcc
C19
C12
5V
L3 C1
Vcc
T1
Bill of Materials
Component Designator D1 J2, J3, J4, J5, J6, J7
Value
Vendor Atmel Johnson Components Mini-Circuits
IFin
Part Number T0797 142-0701-851
Description IF receiver SMA end launch connector Transformer 1206 size supply bypass capacitor 0603 size 0603 size 1210 size 0603 size 1206 size 0603 size
T1, T2 C1 R1, R3 C6, C19, C20, C21 L1, L2, L3, L4, L5 C7, C8, C11, C12 R5, R6, R7, R8 C2, C3, C4, C5, C15, C16, C17, C18 1uF 1 kohm 1nF 1uH 68pF 0 Ohm 820pF
TC1-1
6 (10)
T0797
Rev. A2, 03-Dec-01
T0797
Demo Test Board (Fully Asembled PCB)
Figure 7.
J6 J7 J4 J5
C18 L5 C16
C17 L4 C15 L1
C5 C2
C4 C3
L2
R7
R8
R5
R6
1.96
C20 R3 S2 S1 R1 C6 C7
U1
C21 C11 C12 C19 C8
J3 T2
T1
L3 1 C1 2 J1
J2
1.96
Note: Dimensions in inches
Recommended Package Footprint
Figure 8.
1.25
0.25 0.74 0.4 0.74 3.0
3.0
0.33 via
0.7
0.9
6.9
all units are in mm - Indicates metalization - vias connect pad to underlying ground plane
Remark: Heatslug must be soldered to GND
Preliminary Information
Rev. A2, 03-Dec-01
7 (10)
Preliminary Information
Package Information
8 (10)
T0797
Rev. A2, 03-Dec-01
T0797
Ozone Depleting Substances Policy Statement
It is the policy of Atmel Germany 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. Atmel Germany 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. Atmel Germany GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances.
Preliminary Information
Rev. A2, 03-Dec-01
9 (10)
Atmel Sales Offices
France
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Web Site
http://www.atmel-wm.com
(c) Atmel Germany GmbH 2001. Atmel Germany GmbH makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel Germany GmbH's Terms and Conditions. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel Germany GmbH are granted by the Company in connection with the sale of Atmel Germany GmbH products, expressly or by implication. Atmel Germany GmbH's products are not authorized for use as critical components in life support devices or systems. Data sheets can also be retrieved fron the Internet: http://www.atmel-wm.com
Rev. A2, 03-Dec-01

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