ATMEL T0797

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
65 - 300 MHz
SiGe IF
Receiver /
Demodulator
• Infrastructure digital communication systems
• GSM/cellular transceivers
• ISM band transceivers
Electrostatic sensitive device.
Observe precautions for handling.
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
GC2
5
4
2
1
8
ϕ
9
16
15
BBQP
BBQN
13 12
LOP
LON
IFP
IFN
BBIP
BBIN
Rev. A2, 03-Dec-01
Preliminary Information
1 (10)
Preliminary Information
Ordering Information
Extended Type Number
T0797
Package
Remarks
TSSOP16
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
Symbol
Function
1
BBIN
Baseband I-axis negative output
2
BBIP
Baseband I-axis positive output
3
VCC
5 V power supply
4
GC2
Gain control input, stage 2
5
GC1
Gain control input, stage 1
6
GND
Ground
7
VCC
5 V power supply
8
IFP
IF positive input
9
IFN
IF negative input
10
VCC
5 V power supply
11
GND
Ground
12
LON
Local oscillator, negative input
13
LOP
Local oscillator, positive input
14
VCC
5 V power supply
15
BBQN
Baseband Q-axis negative output
16
BBQP
Baseband Q-axis positive output
2 (10)
T0797
Rev. A2, 03-Dec-01
T0797
Absolute Maximum Ratings
All voltages are referred to GND.
Parameter
Supply voltage
Symbol
Value
Unit
VCC
5.5
V
LO input
LOP, LON
10
dBm
IF input
IFN, IFP
10
V
Operating temperature
TOP
-40 to +85
°C
Storage temperature
Tstg
-65 to +150
°C
Symbol
Value
Unit
RthJA
tbd
K/W
Note:
The part may not survive all maximums applied simultaneously
Thermal Resistance
Parameter
Junction ambient
Electrical Characteristics
Test conditions: VCC = 5 V, Tamb = 25°C, LO input: 0 [email protected] 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
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
65
120 220
300
MHz
B
IF input (I/Q mixing to baseband)
1.1
Frequency range
8, 9
f
1.2
Return loss
8, 9
RL
20
dB
D
1.3
Gain
8, 9
G
35
dB
A
Gain set = high; GC1
= GC2 = 1
1.4
Input P1dB
8, 9
P1dB
–30
dBm
C
1.5
Input IP3
8, 9
IIP3
–20
dBm
B
1.6
Noise figure
8, 9
NF
6
dB
D
1.7
Gain
8, 9
G
15
dB
A
Gain set = high; GC1
= 1; GC2 = 0
1.8
Input P1dB
8, 9
P1dB
–10
dBm
C
1.9
Input IP3
8, 9
IIP3
0
dBm
B
1.10
Noise figure
8, 9
NF
10
dB
D
1.11
Gain
8, 9
G
–5
dB
A
Gain set = high; GC1
= GC2 = 0
–3
1.12
Input P1dB
8, 9
P1dB
10
dBm
C
1.13
Input IP3
8, 9
IIP3
20
dBm
B
1.14
Noise figure
8, 9
NF
30
dB
D
*) 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 = 25°C, LO input: 0 [email protected] 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
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
65
120 220
300
MHz
B
Stuck Mixer (DC to LO port – gain-controlled amplifier)
2.1
Frequency range
8, 9
f
2.2
Return loss
8, 9
RL
20
dB
D
2.3
Gain
8, 9
G
40
dB
A
Gain set = high;
GC1 = GC2 = 1
2.4
Input P1dB
8, 9
P1dB
–26
dBm
C
2.5
Input IP3
8, 9
IIP3
–16
dBm
B
2.6
Noise figure
8, 9
NF
6
dB
D
2.7
Gain
8, 9
G
20
dB
A
Gain set = high;
GC1 = 1; GC2 = 0
2.8
Input P1dB
8, 9
P1dB
–6
dBm
C
2.9
Input IP3
8, 9
IIP3
4
dBm
B
2.10
Noise figure
8, 9
NF
9
dB
D
2.11
Gain
8, 9
G
0
dB
A
Gain set = high;
GC1 = GC2 = 0
2.12
Input P1dB
8, 9
P1dB
14
dBm
C
2.13
Input IP3
8, 9
IIP3
24
dBm
B
2.14
Noise figure
8, 9
NF
30
dB
D
3
I/Q Output
fI/Q
DC
500
MHz
D
1, 2,
15, 16
–0.2
+0.2
dB
A
I/Q phase error
1, 2,
15, 16
–2
+2
deg
A
3.4
I/Q output common
mode voltage
1, 2,
15, 16
V
A
3.5
I/Q output differential
offset voltage
1, 2,
15, 16
Voffset
10
mV
A
+3
dBm
D
dB
D
V
A
mA
A
3.1
I/Q output frequency
range
1, 2,
15, 16
3.2
I/Q output amplitude
error
3.3
4
2.5
LO input
4.1
LO input level
12, 13
PLO
4.2
Return loss
12, 13
RLLO
5
Miscellaneous
5.1
Supply voltage
3, 7,
10, 14
VCC
5.2
Supply current
3, 7,
10, 14
ICC
–3
0
20
4.75
5
5.25
180
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
4 (10)
T0797
Rev. A2, 03-Dec-01
T0797
Typical Device
Performance
Figure 3. Gain vs. pin high-gain state (11)
Gain (dB)
35
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
Gain (dB)
-4
-5
-6
-7
-8
0
5
10
15
Pin (d Bm )
Figure 5. Gain vs. pin medium-gain state (10)
Gain (dB)
16
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
R8
R5
L1
C17
C15
C2
C5
C18
C16
C3
C4
L5
R7
BBIN
BBQP
BBIP
5V
R3
R1
1
2
3
4
5
6
7
8
Vcc
C20
GC2
GC1
Vcc
T0797
5V
BBQN
L2
R6
16
15
14
13
12
11
10
9
Vcc C11
C21
T2
Vcc
C6
5V
C12
C19
C7
Vcc
LOin
C8
T1
L3
IFin
C1
Bill of Materials
Component
Designator
Value
Vendor
Part Number
Description
Atmel
T0797
IF receiver
J2, J3, J4, J5, J6, J7
Johnson
Components
142-0701-851
SMA end launch
connector
T1, T2
Mini-Circuits
TC1-1
Transformer
D1
C1
1uF
1206 size supply bypass capacitor
1 kohm
0603 size
C6, C19, C20, C21
1nF
0603 size
L1, L2, L3, L4, L5
1uH
1210 size
C7, C8, C11, C12
68pF
0603 size
R5, R6, R7, R8
0 Ohm
1206 size
C2, C3, C4, C5, C15,
C16, C17, C18
820pF
0603 size
R1, R3
6 (10)
T0797
Rev. A2, 03-Dec-01
T0797
Demo Test Board (Fully Asembled PCB)
Figure 7.
J7
J6
C18
C17
C16
C15
L5
J4
L4
U1
C3
C21
C11
C12
C20
C6
S2
C4
L2
R6
R5
1.96
R3
C5
C2
L1
R8
R7
J5
J3
T2
C19
C7
C8
S1
T1
R1
L3
1
2 J1
C1
J2
1.96
Note: Dimensions in inches
Recommended Package Footprint
Figure 8.
1.25
3.0
0.25
0.74
0.4
0.74
3.0
φ0.33 via
0.7
0.9
6.9
- Indicates metalization
all units are in mm
- 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)
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Tel: +81 3 3523 3551
Fax: +81 3 3523 7581
Web Site
http://www.atmel-wm.com
© 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