AD7825BRUZ

Semiconductors - ICs

> Data & Signal Conversion

> Analog-to-Digital Converters - ADC

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Series Information for AD7825BRUZ - Analog Devices

Features

  • feature
    8-bit half-flash ADC with 420 ns conversion time One, four, and eight single-ended analog input channels Available with input offset adjust On-chip track-and-hold SNR performance given for input frequencies up to 10 MHz On-chip reference (2.5 V) Automatic power-down at the end of conversion Wide operating supply range 3 V u00b1 10% and 5 V u00b1 10% Input ranges 0 V to 2 V p-p, VDD = 3 V u00b1 10% 0 V to 2.5 V p-p, VDD = 5 V u00b1 10% Flexible parallel interface with EOC pulse to allow standalone operation

Description

ADC PIPELINED 8BIT 2MSPS TSSOP-24

The AD7822/AD7825/AD7829 are high speed, 1-, 4-, and 8-channel, microprocessor-compatible, 8-bit analog-to-digital converters with a maximum throughput of 2 MSPS. The AD7822/ AD7825/AD7829 contain an on-chip reference of 2.5 V (2% tolerance); a track-and-hold amplifier; a 420 ns, 8-bit half- flash ADC; and a high speed parallel interface. The converters can operate from a single 3 V ± 10% and 5 V ± 10% supply. The AD7822/AD7825/AD7829 combine the convert start and power-down functions at one pin, that is, the CONVST pin. This allows a unique automatic power-down at the end of a conversion to be implemented. The logic level on the CONVST pin is sampled after the end of a conversion when an EOC (end of conversion) signal goes high. If it is logic low at that point, the ADC is powered down. The AD7822 and AD7825 also have a separate power-down pin (see the Operating Modes section). The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. Using only address decoding logic, the parts are easily mapped into the microprocessor address space. The EOC pulse allows the ADCs to be used in a stand- alone manner (see the Parallel Interface section.)

Specifications

Resolution (Bits):
8bit
Sampling Rate:
2MSPS
Input Channel Type:
Single Ended
Data Interface:
Parallel
Supply Voltage Type:
Single
Supply Voltage Min:
2.7V
Supply Voltage Max:
5.5V
ADC / DAC Case Style:
TSSOP
No. of Pins:
24Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
Pipelined 8-bit ADCs
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
-
SVHC:
No SVHC (07-Jul-2017)

Alternate Descriptions

Richardson RFPD
CONVERTER - ADC