AD7810 Analog Devices, AD7810 Datasheet
AD7810
Specifications of AD7810
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AD7810 Summary of contents
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... The result is a high speed, low power, space saving ADC solution. 2. Low Power, Single Supply Operation The AD7810 operates from a single 2 5.5 V supply and typically consumes only power while convert- ing. The power dissipation can be significantly reduced at lower throughput rates by using the automatic power-down mode, e ...
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... AD7810–SPECIFICATIONS Parameter DYNAMIC PERFORMANCE 1 Signal to (Noise + Distortion) Ratio 1 Total Harmonic Distortion Peak Harmonic or Spurious Noise 2 Intermodulation Distortion 2nd Order Terms 3rd Order Terms DC ACCURACY Resolution 1 Relative Accuracy 1 Differential Nonlinearity (DNL) 1 Offset Error 1 Gain Error Minimum Resolution for Which No Missing Codes Are Guaranteed ...
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... Plastic DIP –40°C to +105°C Small Outline IC (SOIC) –40°C to +105°C microSOIC I OL 200 A TO OUTPUT 1.6V PIN C L 50pF I OH 200 A –3– AD7810 Data Valid Delay OUT = 5 V ± 10% and DD Package Branding Options Information N-8 SO-8 RM-8 C1Y ...
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... Convert Start. Falling edge puts the track-and-hold into hold mode and initiates a conversion. A rising edge on the CONVST pin enables the serial port of the AD7810. This is useful in multi- package applications where a number of devices share the same serial bus. The state of this pin at the end of conversion also determines whether the part is powered down or not ...
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... It also applies to situations where there is a step input change on the input voltage applied to the V input of the AD7810. It means that the user must wait for the duration of the track/hold acquisition time, after the end of conver- sion or after a step input change to V conversion to ensure that the part operates to specification. – ...
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... IN C2 4pF CHARGE REDISTRIBUTION DAC Figure 7. Equivalent Analog Input Circuit CONTROL The analog input of the AD7810 is made pseudo differ- LOGIC ential pair. V pseudo differential with respect to V IN+ signal is applied to V CLOCK OSC the sampling capacitor is connected to V (see Figure 8). This input scheme can be used to remove offsets that exist in a system ...
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... ADC TRANSFER FUNCTION The output coding of the AD7810 is straight binary. The designed code transitions occur at successive integer LSB values (i.e., 1 LSB, 2 LSBs, etc.). The LSB size ideal transfer characteristic for the AD7810 is shown in Figure 11 below. 111...111 111...110 111...000 000 ...
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... D OUT Figure 14. Mode 1 Operation Timing The serial port on the AD7810 is enabled on the rising edge of the CONVST signal (see Serial Interface section). As explained earlier, this rising edge should occur before the end of the con- version process if the part is not to be powered down. A serial read can take place at any stage after the rising edge of CONVST ...
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... NOTE: Serial read should not cross the next rising edge of CONVST. Because it is possible serial read from the part while it is powered down, the AD7810 is powered up only to do the conversion and is immediately powered down at the end of a conversion. This significantly improves the power consumption of the part at slower throughput rates— ...
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... AD7810 MICROPROCESSOR INTERFACING The serial interface on the AD7810 allows the parts to be directly connected to a range of many different microprocessors. This section explains how to interface the AD7810 with some of the more common microcontroller serial interface protocols. AD7810 to PIC16C6x/7x The PIC16C6x Synchronous Serial Port (SSP) is configured as an SPI Master with the Clock Polarity Bit = 0 ...
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... PIN 1 0.0256 (0.65) BSC 0.120 (3.05) 0.112 (2.84) 0.043 (1.09) 0.006 (0.15) 0.037 (0.94) 0.002 (0.05) 0.018 (0.46) 0.011 (0.28) SEATING 0.008 (0.20) PLANE 0.003 (0.08) –11– AD7810 0.195 (4.95) 0.115 (2.93) 0.015 (0.381) 0.008 (0.204) 0.0196 (0.50) x 45° 0.0099 (0.25) 0.0500 (1.27) 0.0160 (0.41) 0.120 (3.05) 0.112 (2.84) 33° 27° 0.028 (0.71) 0.016 (0.41) ...