Linear Technology DC1304A-A Manuale utente

DESCRIPTION

Demonstration Circuit DC1304A features two programmable

filter ICs, the LTC660 dual, matched, bandpass filter and the

LTC6603, dual, matched, lowpass filter.

The DC1304A

The DC1304AThe DC1304A

The DC1304A-

-A

A is for

is for is for

is for an LTC660 and

an LTC660 and an LTC660 and

an LTC660 and

The DC1304A

The DC1304AThe DC1304A

The DC1304A-

-B is for

B is forB is for

B is for an LTC6603.

an LTC6603. an LTC6603.

an LTC6603.

The LTC®660 is a dual, programmable bandpass filter and

differential driver. The selectivity of the LTC660 is ideal for

filtering baseband tag signals in RFID systems.

The LTC®6603 is a dual, programmable lowpass filter for

communications receivers and transmitters in TD-SCDMA,

WCDMA, CDMA 000, UMTS and 80 .11x systems.

A DC1304A-A or ---B board has two pairs of SMA connectors

for differential inputs and two pairs of SMA connectors for

differential outputs. The differential inputs can be AC coupled

or DC coupled. On board jumpers provide control of an

LTC660 or an LTC6603. The jumper control settings are:

serial or parallel control, internal or external clock, gain and

bandwidth control and input Ac or DC coupling. An on board

multi-turn potentiometer sets the value of the RBIAS resistor

that sets the IC power supply current and clock frequency.

PCB turrets provide for board connections to an SPI master

for a serial control of IC gain and bandwidth.

LTC6602 features:

Guaranteed Phase and Gain Matching Specs

Programmable 5th Order Lowpass: 40 kHz to 900 kHz

Programmable 4th Order Highpass: 4 kHz to 90 kHz

Programmable Gain (0dB/1 dB/ 4dB/30dB)

Simple Pin Programming or SPI Interface

Input Range Extends from 0V to 5V

Low Voltage Operation: .7V to 3.6V

Shutdown and Mute Mode

4mm × 4mm QFN Package

LTC6603 features:

Guaranteed Phase and Gain Matching Specs

Programmable 9th Order Lowpass: 4 kHz to .5 MHz

Programmable Gain (0dB/6dB/1 dB/ 4dB)

Simple Pin Programming or SPI Interface

Input Range Extends from 0V to 5V

Low Voltage Operation: .7V to 3.6V

Shutdown Mode

4mm × 4mm QFN Package

The LTC6602 BLOCK DIAG

The LTC6602 BLOCK DIAGThe LTC6602 BLOCK DIAG

The LTC6602 BLOCK DIAGR

RARAM

ARAMARAM

ARAM

The LTC6603 BLOCK DIA

The LTC6603 BLOCK DIAThe LTC6603 BLOCK DIA

The LTC6603 BLOCK DIAR

RGARAM

GARAMGARAM

GARAM

LTC6602 PROGRAMABLE BANDPASS FILT

AND LTC6603 PROGRAMA

BLE LOW

PASS FILTER

DEMO CIRCUIT DC1304

QUICK START QUIDE

QUICK TEST SETUP – PARALLEL CONTROL

QUICK TEST PROCEDURE

Test Procedure

1. Connect DC1304 as shown, turn on power and adjust

the RBIAS1 pot for 50MHz.

. Connect 50 ohm terminator to AIN-(J ) and sinewave

generator to AIN+ (J1).

3. Connect oscilloscope to VOUTA+ and on the oscillo-

scope display must show a 1Vp-p sinewave.

4. Connect oscilloscope to VOUTA- and on the oscillo-

scope display must show a 1Vp-p sinewave.

5. Connect 50 ohm terminator to BIN-(J ) and sinewave

generator to BIN+ (J1).

6. Connect oscilloscope to VOUTB+ and on the oscillo-

scope display must show a 1Vp-p sinewave.

7. Connect oscilloscope to VOUTB- and on the oscillo-

scope display must show a 1Vp-p sinewave.

DC1304 QUICK START Q

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LTC6602 CLK AND CUTO RANGE

CLK Range, 24MHz to 90MHz

RBIAS = (4.941 10^9) / FCLK; RBIAS in k

Example: If FCLK = 50 MHz Then

RBIAS = (4.941 10^9) / (50 10^6) = 98.8 k

The Lowpass FCUTOFF = FCLK / NLP

The Highpass FCUTOFF = FCLK / NHP

NLP and NHP are the clock dividers set by the

(LPF1, LPF0) and (HPF1, HPF0) inputs respectively.

LPF1 LPF0 NLP HPF1 HPF0 NHP

0 0 600 0 0 6000

0 1 300 0 1 000

1 0 100 1 0 1000

1 1 100 1 1 Bypass

HPF

Lowpass ilter CUTO Range

NLP Range

100 40kHz – 900kHz

300 80kHz – 300kHz

600 40kHz – 150kHz

Highpass ilter CUTO Range

NHP Range

1000 4kHz – 90kHz

000 1 kHz – 45kHz

6000 4kHz – 15kHz

LTC6602 CLK AND CUTO RANGE

CLK Range, 12MHz to 80MHz

RBIAS = ( .47 10^9) / FCLK; RBIAS in k

Example: If FCLK = 50 MHz Then

RBIAS = ( .47 10^9) / (50 10^6) = 49.44k

The Lowpass FCUTOFF = FCLK / NLP

NLP clock divider set by the (LPF1, LPF0) inputs.

Lowpass ilter CUTO Range

NLP Range

3 375kHz – .5MHz

1 8 93.75kHz – 6 5kHz

51 3.44kHz – 156. 5kHz

LPF1 LPF0 NLP

0 0 51

0 1 1 8

1 0 3

1 1 3

DC1304 QUICK START Q

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DC1304 QUICK START Q

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DC1304 QUICK START Q

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DC1304A-A Parts List

Item Qty Reference Part Description Manufacturer / Part #

1 4 C1,C8,C11,C15 Cap., X5R 1uF 5V 0% AVX 06033D105MAT A

C3,C Cap., X5R 4.7uF 6.3V 10% AVX 06036D475KAT1A

3 4 C4,C7,C1 ,C13 Cap., NPO 10pF 5V 5% AVX 06033A100JAT A

4 6 C5,C6,C9,C10,C14,C16 Cap., X7R 0.1uF 5V 10% AVX 06033C104KAT A

5 4 E1,E ,E3,E4 Turret, Testpoint Mill Max 501- -00-80-00-00-07-0

6 9 E5,E6,E7,E8,E9,E10,E11, Turret, Testpoint Mill Max 308- -00-80-00-00-07-0

E1 ,E13

7 6 JP1,JP ,JP3,JP4,JP5,JP6 Headers, 4 Pins mm Ctrs. Samtec TMM-10 -0 -L-D

8 9 JP7,JP8,JP9,JP10,JP11, Headers, 3 Pins mm Ctrs. Samtec TMM-103-0 -L-S

JP1 ,JP13,JP14,JP15

9 9 J1,J ,J3,J4,J5,J6,J7,J8,J9 Conn., SMA 50-Ohm Connex 13 357

10 1 R16 Res., Chip 54.9K 0.06W 1% Vishay CRCW060354K9FKEA

11 1 R17 Res., Chip 47.5K 0.06W 1% Vishay CRCW060347K5FKEA

1 8 R1,R3,R4,R6,R7,R9,R11,R1 Res., Chip 1.87K 0.06W 1% Vishay CRCW06031K87FKEA

13 4 R ,R5,R8,R10 Res., Chip 49.9 0.06W 1% Vishay CRCW060349R9FKEA

14 R13,R19 Res., Chip 5 .3 0.06W 1% Vishay CRCW06035 R3FKEA

15 1 R14 Res., Chip 909 0.06W 1% Vishay CRCW0603909RFKEA

16 R18,R15 Trimpot Vert. Mount 00K VISHAY TS63Y- 04-K-TR 50

17 R16,R17 Res., Chip 0.0K 0.06W 1% Vishay CRCW0603 0K0FKEA

18 1 U1 I.C., OpAmp LTC660 CUF

19 15 XJP1,XJP ,XJP3,XJP4,XJP5, Shunt, mm Ctrs. Samtec SN-BK-G

XJP6,XJP7,XJP8,XJP9,

XJP10,XJP11,XJP1 ,XJP13

XJP14,XJP15

DC1304 QUICK START Q

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DC1304A-B Parts List

Item Qty Reference Part Description Manufacturer / Part #

1 4 C1,C8,C11,C15 Cap., X5R 1uF 5V 0% AVX 06033D105MAT A

C3,C Cap., X5R 4.7uF 6.3V 10% AVX 06036D475KAT1A

3 4 C4,C7,C1 ,C13 Cap., NPO 10pF 5V 5% AVX 06033A100JAT A

4 6 C5,C6,C9,C10,C14,C16 Cap., X7R 0.1uF 5V 10% AVX 06033C104KAT A

5 4 E1,E ,E3,E4 Turret, Testpoint Mill Max 501- -00-80-00-00-07-0

6 9 E5,E6,E7,E8,E9,E10,E11, Turret, Testpoint Mill Max 308- -00-80-00-00-07-0

E1 ,E13

7 6 JP1,JP ,JP3,JP4,JP5,JP6 Headers, 4 Pins mm Ctrs. Samtec TMM-10 -0 -L-D

8 9 JP7,JP8,JP9,JP10,JP11, Headers, 3 Pins mm Ctrs. Samtec TMM-103-0 -L-S

JP1 ,JP13,JP14,JP15

9 9 J1,J ,J3,J4,J5,J6,J7,J8,J9 Conn., SMA 50-Ohm Connex 13 357

10 R16,R17 Res., Chip 30.1K 0.06W 1% Vishay CRCW060330K1FKEA

11 8 R1,R3,R4,R6,R7,R9,R11, R1 Res., Chip 1.87K 0.06W 1% Vishay CRCW06031K87FKEA

1 4 R ,R5,R8,R10 Res., Chip 49.9 0.06W 1% Vishay CRCW06049R9FKEA

13 R13,R19 Res., Chip 5 .3 0.06W 1% Vishay CRCW06035 R3FKEA

14 1 R14 Res., Chip 909 0.06W 1% Vishay CRCW0603909RFKEA

15 R18,R15 Trimpot Vert. Mount 00K VISHAY TS63Y- 04-K-TR 50

16 1 U1 I.C., OpAmp LTC6603CUF

17 1 XJP1,XJP ,XJP3,XJP4,XJP5, Shunt, mm Ctrs. Samtec SN-BK-G

XJP6,XJP8,XJP9,

XJP10,XJP11,XJP14,XJP15

DC1304 QUICK START Q

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DC1304 QUICK START Q

UIDE

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