adc-321 C&D Technologies., adc-321 Datasheet
adc-321
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adc-321 Summary of contents
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... CMOS/TTL compatible inputs Outputs 3-state TTL compatible Surface mount package GENERAL DESCRIPTION The ADC-321 is an 8-bit, high speed, monolithic CMOS, sub- ranging A/D converter. The ADC-321 achieves a sampling rate comparable to flash converters by employing a sub-ranging technique which uses multiple comparator blocks each containing a sample-and-hold amplifier. The ADC-321 can operate with either a single +5V or dual +5V and +3 ...
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... ADC-321 ABSOLUTE MAXIMUM RATINGS PARAMETERS LIMITS Power Supply Voltage (+AV , +DV ) –0 Analog Input Voltage –0.5 to +AV IN Reference Input Voltage ( –0 Digital Input Voltage ( –0 Digital Output Voltage ( –0 FUNCTIONAL SPECIFICATIONS Typical 25° ...
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... TECHNICAL NOTES 1. The ADC-321 is a monolithic CMOS device. It should be handled carefully to prevent static charge pickup has separate power supply terminals +AV and 20) and +DV (pin 10) for the internal analog and digital S circuits recommended that both +AV powered from a single source ...
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... THEORY OF OPERATION (See Functional Block Diagram, Figure 1, and Timing Diagrams, Figure 2) 1. The DATEL ADC-321 is a 2-step parallel A/D converter featuring a 4-bit upper comparator group and two 4-bit lower comparator groups, each with built-in sample and hold. A reference voltage equal to the voltage between (V – ...
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... Figure 3. Typical Connection Diagram 5 ADC-321 N (N+3) C (N+3) UD (N+2) H (N+2) C (N+2) LD (N) S (N+3) H (N+3) LD (N+1) Internal Operation of the ADC-321 A/D CLOCK 0.1µF 0.1µF 0.1µF 74HC04 0.1µF +5V (D) 47µ BIT 1 (MSB) 7 BIT 2 6 BIT 3 5 BIT 4 ADC-321 ...
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... ADC-321 +5V ( ANALOG 10pF Figure 4-1. Clamp Not Used in Self Bias Mode +5V ( ANALOG IN 20 10µ 10pF +5V ( 20k 0.01µF Figure 4-3. Clamp Used in Self Bias Mode ANALOG IN Figure 4-5 ...
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... Ambient Temperature vs. Max. Sampling Rate F = 50MHz S fin = 1kHz, triangular wave input + – Ambient Temperature (°C) Figure 5: Typical Performance Curves 7 ADC-321 Analog Input Frequency vs. S/N + THD, Effective Bit F = 50MHz 2Vp 25° 0.01 0.1 ...
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... AGND 25 32 0.03 (0.8) 0.02 (0.5) ADC-321 DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com Data sheet fax back: (508) 261-2857 DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith ...