Analog Devices AD8342 - Manuals

Page 2 - TABLE OF CONTENTS; REVISION HISTORY

AD8342 Rev. 0 | Page 2 of 20 TABLE OF CONTENTS Specifications..................................................................................... 3 AC Performance ............................................................................... 4 Spur Table ..............................................

Page 3 - SPECIFICATIONS; nated into 100 Ω through a 2:1 ratio balun, unless otherwise noted.

AD8342 Rev. 0 | Page 3 of 20 SPECIFICATIONS V S = 5 V, T A = 25°C, f RF = 238 MHz, f LO = 286 MHz, LO power = 0 dBm, Z O = 50 Ω, R BIAS = 1.82 kΩ, RF termination = 100 Ω, IF termi- nated into 100 Ω through a 2:1 ratio balun, unless otherwise noted. Table 1. Parameter Conditions Min Typ Max Unit RF I...

Page 4 - AC PERFORMANCE; unless otherwise noted.

AD8342 Rev. 0 | Page 4 of 20 AC PERFORMANCE V S = 5 V, T A = 25°C, LO power = 0 dBm, Z O = 50 Ω, R BIAS = 1.82 kΩ, RF termination 100 Ω, IF terminated into 100 Ω via a 2:1 ratio balun, unless otherwise noted. Table 2. Parameter Conditions Min Typ Max Unit RF FREQUENCY RANGE 1 50 500 MHz LO FREQUENCY...

Page 5 - SPUR TABLE; IF terminated into 100 Ω via a 2:1 ratio balun.

AD8342 Rev. 0 | Page 5 of 20 SPUR TABLE V S = 5 V, T A = 25°C, RF and LO power = 0 dBm, f RF = 238MHz, f LO = 286MHz, Z O = 50 Ω, R BIAS = 1.82 kΩ, RF termination 100 Ω, IF terminated into 100 Ω via a 2:1 ratio balun. Note: Measured using standard test board. Typical noise floor of measurement syste...

Page 6 - ABSOLUTE MAXIMUM RATINGS; Parameter; ESD CAUTION

AD8342 Rev. 0 | Page 6 of 20 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Rating Supply Voltage, V S 5.5 V RF Input Level 12 dBm LO Input Level 12 dBm PWDN Pin V S + 0.5 V IFOP, IFOM Bias Voltage 5.5 V Minimum Resistor from EXRB to COMM 1.8 kΩ Internal Power Dissipation 650 mW θ JA 77°C/W Maximum Jun...

Page 7 - PIN CONFIGURATION AND FUNCTION DESCRIPTIONS; Table 5. Pin Function Descriptions

AD8342 Rev. 0 | Page 7 of 20 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 05352-002 PIN 1INDICATOR 1 VPLO 2 LOCM 3 LOIN 4 COMM 11 PWDN 12 VPDC 10 EXRB 9 COMM 5 C O M M 6 IF O M 7 IF O P 8 C O M M 1 5 R F IN 1 6 V P M X 1 4 R F C M 1 3 C O M M TOP VIEW (Not to Scale) AD8342 Figure 2. 16-Lead LFCSP Tab...

Page 8 - TYPICAL PERFORMANCE CHARACTERISTICS

AD8342 Rev. 0 | Page 8 of 20 TYPICAL PERFORMANCE CHARACTERISTICS V S = 5 V, T A = 25°C, RF power = −10 dBm, LO power = 0 dBm, Z O = 50 Ω, R BIAS = 1.82 kΩ, RF termination 100 Ω, IF terminated into 100 Ω via a 2:1 ratio balun, unless otherwise noted. 05352-004 RF FREQUENCY (MHz) GAIN ( d B) IF = 10MH...

Page 14 - CIRCUIT DESCRIPTION; The bias for the mixer is set with an external resistor (R

AD8342 Rev. 0 | Page 14 of 20 CIRCUIT DESCRIPTION The AD8342 is an active mixer optimized for operation within the input frequency range of near dc to 500 MHz. It has a dif-ferential, high impedance RF input that can be terminated or matched externally. The RF input can be driven either single-ended...

Page 15 - AC INTERFACES; when; Table 4. Dynamic Performance for Various Input Networks

AD8342 Rev. 0 | Page 15 of 20 AC INTERFACES The AD8342 is designed to downconvert radio frequencies (RF) to lower intermediate frequencies (IF) using a high or low-side local oscillator (LO). The LO is injected into the mixer core at a frequency higher or lower than the desired input RF. The differe...

Page 16 - IF PORT; RF Circuit Design

AD8342 Rev. 0 | Page 16 of 20 IF PORT The IF port comprises open-collector differential outputs. The NPN open collectors can be modeled as current sources that are shunted with resistances of ~10 kΩ in parallel with capacitances of ~1 pF. The specified performance numbers for the AD8342 were measure...

Page 17 - Av; is the transistor transconductance and is equal to; The external R; resistor is used to control the power dissipa-; resistor has only a small effect. The; LO CONSIDERATIONS

AD8342 Rev. 0 | Page 17 of 20 05352-047 COMM 8 IFOP 7 IFOM 6 COMM 5 AD8342 Z L = 100 Ω IF OUTZ O = 50 Ω +V S 2:1 Figure 47. Biasing the IF Port Open-Collector Outputs Using a Center-Tapped Impedance Transformer 05352-048 COMM 8 IFOP 7 IFOM 6 COMM 5 AD8342 RFC +V S RFC Z L = 100 Ω IF OUT+ IF OUT– +V ...

Page 18 - HIGH IF APPLICATIONS; Minimize ac loading impedance of IF port bias network.

AD8342 Rev. 0 | Page 18 of 20 HIGH IF APPLICATIONS In some applications it may be desirable to use the AD8342 as an up-converting mixer. The AD8342 is a broadband mixer capable of both up and down conversion. Unlike other mixers that rely on on-chip reactive circuitry to optimize performance over a ...

Page 19 - EVALUATION BOARD; Table 6. Evaluation Board Configuration Options; Options for single-ended IF output circuit.; provides ac bypass for R6.

AD8342 Rev. 0 | Page 19 of 20 EVALUATION BOARD An evaluation board is available for the AD8342. The evaluation board is configured for single-ended signaling at the IF output port via a balun transformer. The schematic for the evaluation board is presented in Figure 53. R2 0 Ω R1 0 Ω C61000pF C41000...

Page 20 - ORDERING GUIDE; Models; Evaluation Board

AD8342 Preliminary Technical Data Rev. 0 | Page 20 of 20 OUTLINE DIMENSIONS 1 0.50 BSC 0.60 MAX PIN 1INDICATOR 1.50 REF 0.500.400.30 0.25 MIN 0.45 2.75 BSC SQ TOP VIEW 12° MAX 0.80 MAX0.65 TYP SEATING PLANE PIN 1 INDICATOR 0.900.850.80 0.300.230.18 0.05 MAX0.02 NOM 0.20 REF 3.00 BSC SQ *1.65 1.50 SQ...