National Semiconductor ADC121C021 Скачать руководство пользователя страница 15

 

                                                           

http://www.national.com 

15 

10.0 Evaluation Board Bill of Materials 

  

Qty 

Reference 

Value 

Description 

Source 

Source Part # 

Manufacturer 

Manufacturer Part # 

1  C1 

0 Ohm R 

0 Ohm RES 

  

  

  

  

1  C2 

470pF 

CAP 

  

  

  

  

2 C3,C7 

10.0uF 

CAP 

Digikey  511-1463-1-ND  Kemet 

 

 

5 C4,C5, 

C8,C12 

0.1uF 

CAP 

  

  

  

  

1  C6,C11 

NS 

CAP 

  

  

  

  

1  C9 

1.0uF 

CAP 

  

  

  

  

1  C10 

0 Ohm R 

0 Ohm RES 

  

  

  

  

1  JP1 

INPUT SELECT 

JUMPER 

Digikey  A26513-40-ND 

  

  

1  JP2 

V_PULL 

JUMPER 

Digikey  A26513-40-ND 

  

  

1  JP3 

NS 

JUMPER 

  

  

  

  

1  JP4 

NS 

JUMPER 

  

  

  

  

1  JP5 

VA SEL 

JUMPER 

Digikey  A26529-40-ND 

  

  

1  JP6 

CLK SELECT 

JUMPER 

Digikey  A26513-40-ND 

  

  

1 JP7 

VA_EXT_SHUNT JUMPER 

Digikey  A26513-40-ND   

 

 

 

1  JP8 

NS 

JUMPER 

  

  

  

  

1 J1 

WV4S 

HEAD 

Digikey  S5803-07-ND  Sullins 

PRPN072PARN-RC 

1 J2 

V_IN 

TP 

 

Center Via 
of SMA 

Digikey  5011K-ND 

  

  

2 L1,L2 

100uH 

IND 

Digikey  490-1056-1-ND  Murata 

BLM31PG121SN1L 

1  L3 

0 Ohm R 

0 Ohm RES 

  

  

  

  

9 R1,R3,R4, 

 

R7,R11,  
R13,R14, 
R17,R18 

NS 

RES 

  

  

  

  

4 R2,R5, 

R10,R12 

RES 

  

  

  

  

1  R6 

20 

RES 

  

  

  

  

2  R8,R9 

2K 

RES 

  

  

  

  

2  R15,R19 

51 

RES 

  

  

  

  

1  R16 

500 

RES 

  

  

  

  

1  TP2 

AGND 

TP 

  

NS 

  

  

2  TP3,TP6 

AGND 

TP 

Digikey  5011K-ND 

  

  

3 TP5,TP8, 

TP10 

AGND TP  Digikey 

Single-pin 
Header 

  

  

1  TP7 

VA_EXT 

TP 

Digikey  5011K-ND 

  

  

1  TP9 

WV_CLK_IN 

TP 

  

NS 

  

  

1  U1 

ADC121C021 

ADC -TSOT6 

  

  

NSC 

ADC121C021CIMK 

1  U2 

LMP7731 

AMP-SOT23-5    

  

NSC 

LMP7731MF 

1  U3 

NS 

MSOP8 

  

  

  

  

1  U4 

24C02 

EEPROM 

  

  

  

  

1  U5 

LM4050-4.1 

SHUNT REF 

  

  

NSC 

LM4050AIM3-4.1 

1  U6 

NS 

LDO-SOT23-5    

  

NSC 

LM4132AMF-3.3 

12  VIA1-13 

NS 

  

  

  

  

  

1  Y1 

OSC (Socket) 

  

Digikey  A400-ND 

Aries 

08-3518-10 

Содержание ADC121C021

Страница 1: ...from www national com National Semiconductor January 3 2008 Rev 1 1 CC RoHS Compliant Evaluation Board User s Guide I2 C Compatible 12 Bit 10 Bit or 8 Bit Analog to Digital Converter ADC with Alert F...

Страница 2: ...rcuitry 7 4 4 I 2 C Interface 7 4 5 Alert Function 7 4 6 Automatic Conversion Mode 8 4 7 Power Supply Connections 8 5 0 Software Operation and Settings 8 5 1 Software Quick Start 8 5 2 Data Analysis 9...

Страница 3: ...he board to evaluate the ADC121C021 s performance In the Computer mode data capture and evaluation are simplified by connecting the evaluation board to National Semiconductor s WaveVision 4 Data Captu...

Страница 4: ...ut signal Figure 3 Figure 2 DC Coupled Input Configuration Figure 3 AC Coupled Input Configuration If needed the input can be terminated by adding an appropriate termination resistor at R3 The V_IN fo...

Страница 5: ...ent limit to power connector TP7 Ground TP6 4 Move the shorting jumper at JP5 to pins 9 10 NOTE only two consecutive pins may be shorted on JP5 at a time 5 Turn on the power supply 6 Connect the input...

Страница 6: ...oftware Operation and Settings to setup the WaveVision 4 software 4 0 Functional Description 4 1 Jumper Settings Table 1 describes the function of the various jumpers on the ADC121C021 evaluation boar...

Страница 7: ...e better than 90dBc THD 4 3 ADC Reference Circuitry The ADC121C021 family is internally referenced Therefore the Analog to Digital converter gets its reference from the analog supply VA Hence a clean...

Страница 8: ...ating in the computer mode the supply voltage for VA can be applied externally or supplied directly by the WV4 board through J1 The external supply voltage is selected by placing a jumper across pins...

Страница 9: ...rt function and Automatic Conversion Mode are setup through the Configuration register After making changes to a register value press the Enter key to write the register Figure 10 10 To capture a data...

Страница 10: ...the Control Panel window Each of the registers is read and displayed in the control panel To write to a register simply type in the 8 bit or 16 bit hex value to be written to the register and press En...

Страница 11: ...tions D and E 5 4 2 Solutions Solution A Ensure power is supplied to the VA supply on the board A single jumper must be placed across either pins 1 2 pins 3 4 pins 7 8 or pins 9 10 of JP5 to select th...

Страница 12: ...nd Located at the bottom right of the board TP9 WV_CLK_IN Not Used TP10 AGND Ground Located at the right side of the board Connectors on the ADC121C021 Evaluation Board J1 WV4S 14 pin dual row right a...

Страница 13: ...7 9 JP5 1 1 TP7 VA_EXT L3 0 Ohm R 1 2 JP7 VA_EXT_SHUNT R12 0 1 1 VIA6 C7 10 0uF 1 2 JP2 V_PULL L1 100uH 1 2 3 JP1 INPUT SELECT 1 1 TP10 AGND 1 1 VIA5 R10 0 1 1 TP6 AGND C4 0 1uF R6 20 1 1 VIA10 R2 0 R...

Страница 14: ...national com 14 9 0 Evaluation Board Layers Figure 11 ADC121C021 Evaluation Board All Layers with Silk Screen Figure 12 ADC121C021 Evaluation Board Top Layer Figure 13 ADC121C021 Evaluation Board Bott...

Страница 15: ...513 40 ND 1 JP8 NS JUMPER 1 J1 WV4S HEAD Digikey S5803 07 ND Sullins PRPN072PARN RC 1 J2 V_IN TP Center Via of SMA Digikey 5011K ND 2 L1 L2 100uH IND Digikey 490 1056 1 ND Murata BLM31PG121SN1L 1 L3 0...

Страница 16: ...THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are intended for surgical implant into the body or b support or sus...

Страница 17: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Страница 18: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Страница 19: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Страница 20: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Страница 21: ...egulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided...

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