ad7376 Analog Devices, Inc., ad7376 Datasheet
ad7376
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ad7376 Summary of contents
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... EEPROM solutions. The AD7376 is available in 14-lead TSSOP and 16-lead wide body SOIC packages in 10 kΩ, 50 kΩ, and 100 kΩ options. All parts are guaranteed to operate over the −40°C to +85°C extended industrial temperature range ...
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... AD7376 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—10 kΩ Version................................ 3 Electrical Characteristics—50 kΩ, 100 kΩ Versions ............... 4 Timing Specifications .................................................................. 5 3-Wire Digital Interface................................................................... 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ............................................. 9 Theory of Operation ...
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... ±4 4 ± ± ± ± ± −0.2 ±0.05 AD7376 Max Unit +1 LSB +1 LSB +30 % ppm/°C 200 Ω Ω +1 LSB +1 LSB ppm/°C 0 LSB 3 LSB μA 400 Ω ...
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... AD7376 Parameter 6, 9,10 DYNAMIC CHARACTERISTICS Bandwidth −3 dB Total Harmonic Distortion V Settling Time W Resistor Noise Voltage 1 Typical values represent average readings at 25° Resistor position nonlinearity error R-INL is the deviation from an ideal value measured between the maximum and minimum resistance wiper positions. R-DNL measures the relative step change from an ideal value measured between successive tap positions ...
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... kHz 0.002 Min Typ 120 120 150 120 10 120 120 = (10 and timed from a voltage level of 1 AD7376 Max Unit V 0 0.4 V ±1 μA pF ±16 μA −0.1 mA −0 ...
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... Data is loaded MSB first. (DATA IN) (DATA OUT SDI CLK RDAC REGISTER LOAD OUT 0 Figure 2. AD7376 3-Wire Digital Interface Timing Diagram ( OUT 1 SDI SDO D' D' ...
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... V to +35 V device reliability ESD CAUTION ±20 mA ±5 mA ± 0 −40°C to +85°C 150°C −65°C to +150°C 260°C 20 sec to 40 sec (T − T )/θ JMAX A JA 120°C/W 240°C/W Rev Page AD7376 ...
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... Serial Data Output. Positive Power Supply. No Connect. Let it float or ground. Wiper Terminal. V ≤ V ≤ Rev Page AD7376 DD GND SDO 4 13 TOP VIEW (Not to Scale) CS SHDN SDI 6 11 CLK CONNECT Figure 5 ...
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... DD SS –4 –40 – TEMPERATURE (°C) Figure 10. Supply Current ( vs. Temperature DD SS 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 –40 – TEMPERATURE (ºC) Figure 11. Shutdown Current vs. Temperature AD7376 V = +15V –15V SS 112 128 = ±15V SS = ±15V 100 120 100 120 ...
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... AD7376 120 100kΩ 100 80 60 50kΩ 10kΩ 0 –40 – TEMPERATURE (°C) Figure 12. Total Resistance vs. Temperature 350 300 ± 250 200 150 100 –40 – TEMPERATURE (°C) Figure 13. Wiper Contact Resistance vs. Temperature ...
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... Figure 22. Total Harmonic Distortion Plus Noise vs. Amplitude 6 = ±15V ±15V Figure 23. Theoretical Maximum Current vs. Code Rev Page AD7376 ±15V DD SS CODE = MIDSCALE V = 1Vrms IN 10kΩ 100kΩ 50kΩ 100 1k 10k FREQUENCY (Hz ± ...
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... the wiper resistance contributed by the on resistance of W the internal switch. The AD7376 wiper switches are designed with the transmission gate CMOS topology, and the gate voltage is derived from the V . Each switch’s on resistance temperature (see Figure 13). ...
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... WB reduces to 5 ppm/°C. 3-WIRE SERIAL BUS DIGITAL INTERFACE The AD7376 contains a 3-wire digital interface ( CS , CLK, and SDI). The 7-bit serial word must be loaded MSB first. The format of the word is shown in Figure 2. The positive edge- sensitive CLK input requires clean transitions to avoid clocking incorrect data into the serial input register ...
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... SDO function is used. Users need to tie the SDO pin of one package to the SDI pin of the next package. For example, in Figure 28, if two AD7376s are daisy-chained, a total of 14 bits of data are required for each operation. The first set of seven bits goes to U2; the second set of seven bits goes to U1 ...
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... Figure 31 illustrates the basic supply bypassing configuration for the AD7376. The ground pin of the AD7376 is a digital ground reference. To minimize the digital ground bounce, the AD7376 digital ground terminal should be joined remotely to the analog ground (see Figure 31) ...
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... AD7376 APPLICATIONS INFORMATION HIGH VOLTAGE DAC The AD7376 can be configured as a high voltage DAC as high The circuit is shown in Figure 32. The output is ⎡ ⎤ ⎛ + ⎞ × ⎜ ⎟ ⎢ ⎥ O ⎝ ⎠ ⎣ ⎦ 128 R 1 Where D is the decimal code from 0 to 127. ...
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... Because of its good THD performance and high voltage capability, the AD7376 can be used for digital volume control. If AD7376 is used directly as an audio attenuator or gain amplifier, a large step change in the volume level at any arbitrary time can lead to an abrupt discontinuity of the audio signal, causing an audible zipper noise ...
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... AD7376 OUTLINE DIMENSIONS 1.05 1.00 0.80 0.30 (0.0118) 0.10 (0.0039) COPLANARITY 0.10 5.10 5.00 4. 4.50 6.40 4.40 BSC 4. PIN 1 0.65 BSC 0.20 1.20 0.09 MAX 0.15 0.30 SEATING 0.05 0.19 COPLANARITY PLANE 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 36. 14-Lead Thin Shrink Small Outline Package [TSSOP] (RU-14) Dimensions shown in millimeters 10.50 (0.4134) 10.10 (0.3976 7.60 (0.2992) 7.40 (0.2913) 1 10.65 (0.4193) 8 10.00 (0.3937) 1.27 (0.0500) BSC 2.65 (0.1043) 2.35 (0.0925) SEATING 0 ...
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... In SOICWB-16 package top marking: line 1 shows AD7376; line 2 shows the branding information, where A10 = 10 kΩ, A50 = 50 kΩ, and A100 = 100 kΩ; line 3 shows a “#” top marking with the date code in YYWW; and line 4 shows the lot number. ...
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... AD7376 NOTES ©1997-2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D01119-0-3/07(B) Rev Page ...