Datasheet AD9238 (Analog Devices) - 9

AD9238 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS ) REF SB M _A ( A N X_SELECT U 11_A 10_A 9_A 8_A 7_A 6_A 5_A AVDD CLK_ SHARED_ M PDW OEB_A OTR_A D D D D DRGND DRVDD D D D 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 1 AGND 48 D4_A PIN 1 2 VIN+_A IDENTIFIER 47 D3_A 3 VIN–_A 46 D2_A 4 AGND 45 D1_A 5 AVDD 44 D0_A (LSB) 6 REFT_A 43 DNC 7 REFB_A 42 DNC AD9238 VREF 8 41 DRVDD 64-LEAD LQFP SENSE 9 40 TOP VIEW DRGND REFB_B 10 (Not to Scale) 39 OTR_B REFT_B 11 38 D11_B (MSB) AVDD 12 37 D10_B AGND 13 36 D9_B VIN–_B 14 35 D8_B VIN+_B 15 34 D7_B AGND 16 33 D6_B 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 B ) _B DCS DFS N DNC SB 1_B 2_B 3_B 4_B 5_B DNC AVDD (L D D D D D CLK_ OEB_B DRGND DRVDD PDW 0_B
003
D DNC = DO NOT CONNECT
02640- Figure 3. 64-Lead LQFP Pin Configuration
F T ) C E B L S D_RE A M _ A N A _ _ A ( A ND DD DD K_A X_SE W B _ _ A R HARE AV CL S MU PD OE OT D11 D10 D9_A D8_A DRG DRV D7_A D6_ D5_A 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 AGND 1 PIN 1 48 D4_A VIN+_A INDICATOR 2 47 D3_A VIN–_A 3 46 D2_A AGND 4 45 D1_A AVDD 5 44 D0_A (LSB) REFT_A 6 43 DNC REFB_A 7 42 DNC AD9238 VREF 8 41 DRVDD 64-LEAD LFCSP SENSE 9 40 DRGND TOP VIEW REFB_B 10 39 OTR_B (Not to Scale) REFT_B 11 38 D11_B (MSB) AVDD 12 37 D10_B AGND 13 36 D9_B VIN–_B 14 35 D8_B VIN+_B 15 34 D7_B AGND 16 33 D6_B 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 D S B B C C ) D D _ _ B N DD K_B DCS DF B DN DN S L D1_B D2_B G V D3_B D4_B D5_B AV CL WN OE
03
DR DR
1
PD
0- 64
D0_B (
02
NOTES 1. THERE IS AN EXPOSED PAD THAT MUST CONNECT TO AGND. 2. DNC = DO NOT CONNECT.
Figure 4. 64-Lead LFCSP Pin Configuration Rev. C | Page 8 of 48 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS EXPLANATION OF TEST LEVELS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS EQUIVALENT CIRCUITS THEORY OF OPERATION ANALOG INPUT Differential Input Configurations Single-Ended Input Configuration CLOCK INPUT AND CONSIDERATIONS POWER DISSIPATION AND STANDBY MODE DIGITAL OUTPUTS TIMING DATA FORMAT VOLTAGE REFERENCE Internal Reference Connection External Reference Operation AD9238 LQFP EVALUATION BOARD CLOCK CIRCUITRY ANALOG INPUTS REFERENCE CIRCUITRY DIGITAL CONTROL LOGIC OUTPUTS LQFP EVALUATION BOARD BILL OF MATERIALS (BOM) LQFP EVALUATION BOARD SCHEMATICS LQFP PCB LAYERS DUAL ADC LFCSP PCB POWER CONNECTOR ANALOG INPUTS OPTIONAL OPERATIONAL AMPLIFIER CLOCK VOLTAGE REFERENCE DATA OUTPUTS LFCSP EVALUATION BOARD BILL OF MATERIALS (BOM) LFCSP PCB SCHEMATICS LFCSP PCB LAYERS THERMAL CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE