AD7475ARZ Analog Devices Inc, AD7475ARZ Datasheet
AD7475ARZ
Specifications of AD7475ARZ
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AD7475ARZ Summary of contents
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FEATURES AND APPLICATIONS Fast throughput rate: 1 MSPS Specified for Low power: 4.5 mW max at 1 MSPS with 3 V supplies 10.5 mW max at 1 MSPS with 5 V supplies ...
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AD7475/AD7495 TABLE OF CONTENTS AD7475 Specifications..................................................................... 3 AD7495 Specifications..................................................................... 5 Timing Specifications....................................................................... 7 Timing Example 1 ........................................................................ 8 Timing Example 2 ........................................................................ 8 Absolute Maximum Ratings............................................................ 9 ESD Caution.................................................................................. 9 Pin Configuration and Function Descriptions........................... 10 Terminology .................................................................................... 11 Typical ...
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AD7475 SPECIFICATIONS 5.25 V, REF DRIVE Table 1. Parameter DYNAMIC PERFORMANCE Signal-to-Noise and Distortion Ratio (SINAD) Total Harmonic Distortion (THD) Peak Harmonic ...
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AD7475/AD7495 Parameter POWER REQUIREMENTS DRIVE Normal Mode (Static) Normal Mode (Operational) Partial Power-Down Mode Partial Power-Down Mode Full Power-Down Mode Power Dissipation Normal Mode (Operational) Partial Power-Down (Static) Full Power-Down 1 Temperature ranges for ...
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AD7495 SPECIFICATIONS DRIVE Table 2. Parameter DYNAMIC PERFORMANCE Signal-to-Noise and Distortion (SINAD) Total Harmonic Distortion (THD) Peak Harmonic or Spurious Noise (SFDR) Intermodulation Distortion ...
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AD7475/AD7495 Parameter POWER REQUIREMENTS DRIVE I DD Normal Mode (Static) Normal Mode (Operational) Partial Power-Down Mode Partial Power-Down Mode Full Power-Down Mode 3 Power Dissipation Normal Mode (Operational) Partial Power-Down (Static) Full Power-Down 1 Temperature ranges for ...
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TIMING SPECIFICATIONS 5.25 V, REF IN = 2.5 V (AD7475 DRIVE Table 3. Parameter Limit MIN SCLK 20 t ...
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AD7475/AD7495 TIMING EXAMPLE 1 With MHz and a throughput of 1 MSPS, the cycle SCLK time 12.5(1 μs. With t 2 SCLK ACQ is 365 ns. The 365 ns ...
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ABSOLUTE MAXIMUM RATINGS T = 25°C unless otherwise noted. A Table 4. Parameters V to GND GND DRIVE Analog Input Voltage to GND Digital Input Voltage to GND DRIVE DD Digital Output Voltage to ...
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AD7475/AD7495 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Descriptions Pin No. Mnemonic Function 1 (AD7475) REF IN Reference Input for the AD7475. An external reference must be applied to this input. The voltage range for the external reference is ...
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TERMINOLOGY Integral Nonlinearity The maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale, a point ½ LSB below the first code transition, and full scale, ...
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AD7475/AD7495 TYPICAL PERFORMANCE CURVES Figure 7 shows a typical FFT plot for the AD7475 MHz sample rate and a 100 kHz input frequency. –15 –35 –55 –75 –95 –115 0 50 100 150 200 250 300 FREQUENCY ...
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THEORY OF OPERATION The AD7475/AD7495 are fast, micropower, 12-bit, single- supply analog-to-digital converters (ADCs). The parts can be operated from a 2 5.25 V supply. When operated from either supply supply, ...
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AD7475/AD7495 TYPICAL CONNECTION DIAGRAM Figure 13 and Figure 15 show typical connection diagrams for the AD7475 and AD7495, respectively. In both setups the GND pin is connected to the analog ground plane of the system. In Figure 13, REF IN ...
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When no amplifier is used to drive the analog input, the source impedance should be limited to low values. The maximum source impedance depends on the amount of total harmonic distortion (THD) that can be tolerated. The THD increases as ...
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AD7475/AD7495 OPERATING MODES The AD7475/AD7495 operating mode is selected by controlling the logic state of the CS signal during a conversion. There are three possible modes of operation: normal mode, partial power- down mode, and full power-down mode. The point ...
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To exit this operating mode and power up the AD7475/AD7495 again, a dummy conversion is performed. On the falling edge the device begins to power up and continues to power up as long held ...
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AD7475/AD7495 Full power-down is entered in a way similar to partial power- down, except the timing sequence shown in Figure 20 must be executed twice. The conversion process must be interrupted in a similar fashion by bringing CS high anywhere ...
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POWER VS. THROUGHPUT RATE By using the partial power-down mode on the AD7475/ AD7495 when not converting, the average power consumption of the ADC decreases at lower throughput rates. Figure 24 shows how, as the throughput rate is reduced, the ...
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AD7475/AD7495 SERIAL INTERFACE Figure 26 shows the detailed timing diagram for serial inter- facing to the AD7475/AD7495. The serial clock provides the conversion clock and also controls the transfer of information from the AD7475/AD7495 during conversion. CS initiates the data ...
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MICROPROCESSOR INTERFACING The serial interface on the AD7475/AD7495 allows the parts to be directly connected to a range of many different micro- processors. This section explains how to interface the AD7475/ AD7495 with some of the more common microcontroller and ...
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AD7475/AD7495 The timer registers are loaded with a value that provides an interrupt at the required sample interval. When an interrupt is received, a value is transmitted with TFS/DT (ADC control word). The TFS is used to control the RFS, ...
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OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2440) 4.00 (0.1574) 5.80 (0.2284) 3.80 (0.1497 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) 0.51 (0.0201) COPLANARITY 0.25 (0.0098) 0.31 (0.0122) SEATING 0.10 0.17 (0.0067) ...
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AD7475/AD7495 ORDERING GUIDE Model Range AD7475AR −40°C to +85°C AD7475AR-REEL −40°C to +85°C AD7475AR-REEL7 −40°C to +85°C AD7475BR −40°C to +85°C AD7475BR-REEL −40°C to +85°C AD7475BR-REEL7 −40°C to +85°C AD7475ARM −40°C to +85°C AD7475ARM-REEL −40°C to +85°C AD7475ARM-REEL7 −40°C to ...