T0790

T0790 ATMEL | Alldatasheet

Document overview

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Technical content

Features

 700 MHz to 2700 MHz Operating Frequency  Very Low Noise Floor Performance  Very Good Sideband and Carrier Suppression  Supports Wideband Baseband Input  Very High Linearity  Very Low LO Leakage  50 Ω Impedance on RF and LO Port  Low LO Drive Requirements  No External IF Filter  Supply Voltage 5 V  Small SSOP16 Package

Applications

 Infrastructure Digital Communication Systems  GSM/TDMA/CDMA2000/W-CDMA/UMTS/ISM Band Transceivers  RF Radio Links  Wireless Modem Access Points  High Performance RF Instrumentation Electrostatic sensitive device. Observe precautions for handling.

Description

The T0790 is a direct quadrature modulator using Atmel’s Silicon-Germanium (SiGe) process. This modulator features a frequency range of 700 to 2700 MHz with excellent carrier and sideband suppression and a very low noise floor. It operates from a single 5 V supply and provides -11 dBm of power while requiring only 0 dBm input to the inte- grated LO driver. An RF and an LO amplifier are also included. The T0790 incorporates internal matching on each RF , IF and LO port to enhance ease of use and to reduce the external components required. The LO input can be driven differentially or single ended. Figure 1. Block Diagram

700 MHz -

2700 MHz

2 T0790 [Preliminary]

Figure 2. Pinning SSOP16

1 BBQ+ Baseband Q-axis positive input

2 VCC Supply voltage

3 GND Ground

6 GND Ground

8 BBI+ Baseband I-axis positive input

9 BBI- Baseband I-axis negative input

10 VCC Supply voltage

11 GND Ground

14 GND Ground

15 VCC Supply voltage

16 BBQ- Baseband Q-axis negative input

specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

T0790 [Preliminary] 4555C–SIGE–11/03 Thermal Resistance Parameters Symbols Value Unit Junction ambient R thJA 35 K/W

Electrical Characteristics

Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = 5 V, Tamb = 25° C; baseband inputs: 1.9 V DC bias, 200 kHz frequency, 300 mVP-P, 600 mVP-P differential drive, I/Q signals in quadrature, LO = 1960 MHz; PLO = -5 dBm No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* General Performance Supply voltage 2, 10, 15 VCC 4.75 5.0 5.25 V A Supply current 2, 10,

15 ICC 73 82 mA A

LO drive 4, 5 P LO -8 -5 -2 dBm D LO frequency 4, 5 f LO 700 2700 MHz B LO return loss Matched to 50 Ω 4, 5 RL LO 16 dB C Baseband Inputs Baseband input frequency range -3 dB bandwidth, baseband inputs, terminated with 50 Ω 1, 8, 9, 16 f BB DC 500 MHz D Baseband input resistance Per pin 1, 8, 9, 16 RBB 4.4 k Ω D Baseband input capacitance Per pin 1, 8, 9, 16 CBB 4p F D Miscellaneous Shutdown attenuation 7A SD 60 dB D Shutdown pin resistance At 1 MHz 7 R SD 11.9 k Ω D Shutdown pin capacitance At 1 MHz 7 C SD 5.2 pF D Shutdown input thresholds Shutdown disabled (normal operation) 73 . 7 5 V CC VD Shutdown enabled 7 0 1.5 V D *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

4 T0790 [Preliminary]

4555C–SIGE–11/03 Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = 5 V, Tamb = 25° C; baseband inputs: 1.9 V DC bias, 200 kHz frequency, 300 mVP-P, 600 mVP-P differential drive, I/Q signals in quadrature, LO = 900 MHz; PLO = -5 dBm No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* RF Output Port RF frequency 12, 13 f RF 700 1000 MHz B Output power 12, 13 P RFout -13.0 -10.5 -9.0 dBm A RF return loss Matched to 50 Ω 12, 13 P LORL 20 dB D 1-dB output compression point 12, 13 P1dB 3 4 dBm A LO-RF leakage 12, 13 P LORF -40 -34 dBm D Sideband suppression 12, 13 A SB 34 40 dB D IM3 suppression Two tone baseband input at 600 mVP-P differential per tone 12, 13 A IM3 58 62 dB D Broadband noise floor 12, 13 P NOISE -154 -148 dBm/ Hz C Quadrature phase error 12, 13 -2 ±0.5 +2 ° B I/Q amplitude balance 12, 13 -0.2 ±0.5 +0.2 dB B *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: V CC = 5 V, Tamb = 25° C; baseband inputs: 1.9 V DC bias, 200 kHz frequency, 300 mVP-P, 600 mVP-P differential drive, I/Q signals in quadrature, LO = 1960 MHz; PLO = -5 dBm No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* RF Output Port RF frequency 12, 13 f RF 1700 2000 MHz B Output power 12, 13 P RFout -15.0 -11.5 -10.0 dBm A RF return loss Matched to 50 Ω 12, 13 P LORL 16 dB D 1-dB output compression point 12, 13 P1dB 2 3 dBm A LO-RF leakage 12, 13 P LORF -40 -32 dBm D Sideband suppression 12, 13 A SB 34 40 dB D IM3 suppression Two tone baseband input at 600 mVP-P differential per tone 12, 13 A IM3 58 62 dB D *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

T0790 [Preliminary] 4555C–SIGE–11/03 Broadband noise floor 12, 13 P NOISE -155 -148 dBm/ Hz C Quadrature phase error 12, 13 -2 ±0.5 +2 ° B I/Q amplitude balance 12, 13 -0.2 ±0.5 +0.2 dB B Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: VCC = 5 V, Tamb = 25° C; baseband inputs: 1.9 V DC bias, 200 kHz frequency, 300 mVP-P, 600 mVP-P differential drive, I/Q signals in quadrature, LO = 1960 MHz; PLO = -5 dBm No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Test conditions: Unless otherwise noted, the following conditions apply to typical performance specification under static conditions: V CC = 5 V, Tamb = 25° C; baseband inputs: 1.9 V DC bias, 200 kHz frequency, 300 mVP-P, 600 mVP-P differential drive, I/Q signals in quadrature, LO = 2600 MHz; PLO = -5 dBm No. Parameters Test Conditions Pin Symbol Min. Typ. Max. Unit Type* RF Output Port RF frequency 12, 13 f RF 2300 2700 MHz B Output power 12, 13 P RFout -18 -14.5 -13 dBm A RF return loss Matched to 50 Ω 12, 13 P LORL 15 dB D 1-dB output compression point 12, 13 P1dB TBD dBm A LO-RF leakage 12, 13 P LORF -40 -32 dBm D Sideband suppression 12, 13 A SB 34 40 dB D IM3 suppression Two tone baseband input at 600 mVP-P differential per tone 12, 13 A IM3 TBD dB D Broadband noise floor 12, 13 P NOISE TBD dBm/ Hz C Quadrature phase error 12, 13 -2 ±0.5 +2 ° B I/Q amplitude balance 12, 13 -0.2 ±0.5 +0.2 dB B *) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

6 T0790 [Preliminary]

700 MHz to

1000 MHz: Typical

Figure 3. SSB Power versus LO Frequency Figure 4. Output P1dB versus LO Frequency Figure 5. Carrier Feedthrough versus LO Frequency

8 T0790 [Preliminary]

1500 MHz to

2500 MHz: Typical

long cables, which added additionall loss and affected the output power. Figure 9. SSB Power versus LO Frequency Figure 10. Carrier Feedthrough versus LO Frequency Figure 11. Sideband Suppression versus LO Frequency

10 T0790 [Preliminary]

Figure 15. Application Schematic Note: 1. May vary due to printed board layout and material.

T0790 [Preliminary] 4555C–SIGE–11/03 Note: 1. May vary due to printed board layout and material. Note: 1. May vary due to printed board layout and material. Bill of Materials (1700 MHz to 2500 MHz Evaluation Board) Component Reference Vendor Part Number/ Remark Value (1) Size/Package Direc Quadrature Modulator D1 Atmel T0790 SSOP16 Inductor L1 Würth Elektronik 74476401 1 µH 1210 Resistor R1, R2, R6, R7 180 Ω 0402 Resistor R5 1 k Ω 0402 Capacitor C3,C16 6.8 pF 0402 Capacitor C4,C15 1 nF 0402 Electrolytic capacitor C2 10 µF Size A Capacitor C5, C6, C12, C13 2.7 pF 0402 Capacitor C8, C11 n.c. 0402 RF transformer 1200 MHz to 2200 MHz T1, T2 Panansonic EHF-FD1619 3216 RF connector P8, P9, P10, P11, P12, P13 Johnson Components 142-0711-841 SMA Bill of Materials (2500 MHz to 2700 MHz Evaluation Board) Component Reference Vendor Part Number/ Remark Value (1) Size/Package Direc Quadrature Modulator D1 Atmel T0790 SSOP16 Inductor L1 Würth Elektronik 74476401 1 µH 1210 Resistor R1, R2, R6, R7 180 Ω 0402 Resistor R5 1 k Ω 0402 Capacitor C3,C16 6.8 pF 0402 Capacitor C4,C15 1 nF 0402 Electrolytic capacitor C2 10 µF Size A Capacitor C5, C12 1.5 pF 0402 Capacitor C6, C13 1.8 pF 0402 Capacitor C8, C11 n.c. 0402 RF transformer 1200 MHz to 2200 MHz T1, T2 Panansonic EHF-FD1619 3216 RF connector P8, P9, P10, P11, P12, P13 Johnson Components 142-0711-841 SMA

12 T0790 [Preliminary]

Figure 16. Demo Test Board (Fully Assembled PCB) Figure 17. Recommended Package Footprint Note: Only ground signal traces are allowed directly under the package. Heatslug must be soldered to GND. Plugging of the ground vias under the heat slug is also recommended to avoid soldering problems.

T0790 [Preliminary] 4555C–SIGE–11/03

Package Information

Ordering Information

Extended Type Number Package Remarks T0790-6C SSOP16 –

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