Datasheet LTC2321-14 (Analog Devices) - 9
| Fabricante | Analog Devices |
| Descripción | Dual, 14-Bit + Sign, 2Msps Differential Input ADC with Wide Input Common Mode Range |
| Páginas / Página | 28 / 9 — pin FuncTions REFOUT2 (Pin 26):. REFRTN2 (Pin 27):. REFINT (Pin 28):. … |
| Formato / tamaño de archivo | PDF / 2.6 Mb |
| Idioma del documento | Inglés |
pin FuncTions REFOUT2 (Pin 26):. REFRTN2 (Pin 27):. REFINT (Pin 28):. Exposed Pad (Pin 29):. FuncTional block DiagraM
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LTC2321-14
pin FuncTions REFOUT2 (Pin 26):
Reference Buffer 2 Output. An onboard
REFRTN2 (Pin 27):
Reference Buffer 2 Output Return. buffer nominally outputs 4.096V to this pin. This pin is Bypass REFRTN2 to REFOUT2. Do not tie the REFRTN2 referred to REFRTN2 and should be decoupled closely to pin to the ground plane. the pin (no vias) with a 0.1µF (X7R, 0402 size) capacitor
REFINT (Pin 28):
Reference Buffer Output Enable. Tie to and a 10μF (X5R, 0805 size) ceramic capacitor in paral- V lel. The internal buffer driving this pin may be disabled DD when using the internal reference. Tie to ground to disable the internal REFOUT1 and REFOUT2 buffers for by grounding the REFINT pin. If the buffer is disabled, use with external voltage references. This pin has a 500k an external reference may drive this pin in the range of internal pull-up to V 1.25V to V DD. DD.
Exposed Pad (Pin 29):
Ground. Solder this pad to ground.
FuncTional block DiagraM
VDD 1,8 LDO VBYP1 13 AIN1+ 7 + LVDS/CMOS SDO1+ 15 14-BIT + SIGN TRI-STATE S/H SAR ADC SDO1– A SERIAL OUTPUT 16 IN1– 6 – 28 REFINT REFOUT1 GND 12 G 4, 5, 10, 29 1.2V REF OVDD 14 REFOUT2 26 G CLKOUT+ CNV TIMING CONTROL OUTPUT 17 9 LOGIC CLOCK DRIVER CLKOUT– 18 SCK+ LVDS/CMOS 21 RECEIVERS SCK– 22 A 2 IN2+ + LVDS/CMOS SDO2+ 19 14-BIT + SIGN TRI-STATE S/H SAR ADC SDO2– A SERIAL OUTPUT 20 IN2– 3 – VDD 1,8 VBYP2 24 LDO 232114 BD 232114fc For more information www.linear.com/LTC2321-14 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Typical Application Package Description Revision History Related Parts
pin FuncTions REFOUT2 (Pin 26):
Reference Buffer 2 Output. An onboard
REFRTN2 (Pin 27):
Reference Buffer 2 Output Return. buffer nominally outputs 4.096V to this pin. This pin is Bypass REFRTN2 to REFOUT2. Do not tie the REFRTN2 referred to REFRTN2 and should be decoupled closely to pin to the ground plane. the pin (no vias) with a 0.1µF (X7R, 0402 size) capacitor
REFINT (Pin 28):
Reference Buffer Output Enable. Tie to and a 10μF (X5R, 0805 size) ceramic capacitor in paral- V lel. The internal buffer driving this pin may be disabled DD when using the internal reference. Tie to ground to disable the internal REFOUT1 and REFOUT2 buffers for by grounding the REFINT pin. If the buffer is disabled, use with external voltage references. This pin has a 500k an external reference may drive this pin in the range of internal pull-up to V 1.25V to V DD. DD.
Exposed Pad (Pin 29):
Ground. Solder this pad to ground.
FuncTional block DiagraM
VDD 1,8 LDO VBYP1 13 AIN1+ 7 + LVDS/CMOS SDO1+ 15 14-BIT + SIGN TRI-STATE S/H SAR ADC SDO1– A SERIAL OUTPUT 16 IN1– 6 – 28 REFINT REFOUT1 GND 12 G 4, 5, 10, 29 1.2V REF OVDD 14 REFOUT2 26 G CLKOUT+ CNV TIMING CONTROL OUTPUT 17 9 LOGIC CLOCK DRIVER CLKOUT– 18 SCK+ LVDS/CMOS 21 RECEIVERS SCK– 22 A 2 IN2+ + LVDS/CMOS SDO2+ 19 14-BIT + SIGN TRI-STATE S/H SAR ADC SDO2– A SERIAL OUTPUT 20 IN2– 3 – VDD 1,8 VBYP2 24 LDO 232114 BD 232114fc For more information www.linear.com/LTC2321-14 9 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs And Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Typical Application Package Description Revision History Related Parts