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ADS54J20 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS54J20 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 81 page  4 ADS54J20 SBAS766A – MAY 2016 – REVISED MAY 2016 www.ti.com Product Folder Links: ADS54J20 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Pin Functions PIN I/O DESCRIPTION NAME NO. CLOCK, SYSREF CLKINM 28 I Negative differential clock input for the ADC CLKINP 27 I Positive differential clock input for the ADC SYSREFM 34 I Negative external SYSREF input SYSREFP 33 I Positive external SYSREF input CONTROL, SERIAL PDN 50 I/O Power-down. Can be configured via an SPI register setting. Can be configured as a fast overrange output for channel A via the SPI. RESET 48 I Hardware reset; active high. This pin has an internal 20-k Ω pulldown resistor. SCLK 6 I Serial interface clock input SDIN 5 I Serial interface data input SDOUT 11 O Serial interface data output. Can be configured as a fast overrange output for channel B via the SPI. SEN 7 I Serial interface enable DATA INTERFACE DA0M 62 O JESD204B serial data negative output for channel A DA1M 59 O DA2M 56 O DA3M 54 O DA0P 61 O JESD204B serial data positive output for channel A DA1P 58 O DA2P 55 O DA3P 53 O DB0M 65 O JESD204B serial data negative output for channel B DB1M 68 O DB2M 71 O DB3M 1 O DB0P 66 O JESD204B serial data positive output for channel B DB1P 69 O DB2P 72 O DB3P 2 O SYNC 63 I Synchronization input for the JESD204B port INPUT, COMMON MODE INAM 41 I Differential analog negative input for channel A INAP 42 I Differential analog positive input for channel A INBM 14 I Differential analog negative input for channel B INBP 13 I Differential analog positive input for channel B VCM 22 O Common-mode voltage, 2.1 V. Note that analog inputs are internally biased to this pin through 600 Ω (effective), no external connection from the VCM pin to the INxP or INxM pin is required. POWER SUPPLY AGND 18, 23, 26, 29, 32, 36, 37 I Analog ground AVDD 9, 12, 15, 17, 25, 30, 35, 38, 40, 43, 44, 46 I Analog 1.9-V power supply AVDD3V 10, 16, 24, 31, 39, 45 I Analog 3.0-V power supply for the analog buffer DGND 3, 52, 60, 67 I Digital ground DVDD 8, 47 I Digital 1.9-V power supply IOVDD 4, 51, 57, 64, 70 I Digital 1.15-V power supply for the JESD204B transmitter NC, RES NC 19, 20, 21 — Unused pin, do not connect RES 49 I Reserved pin. Connect to DGND. |
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