cs5451a Cirrus Logic, Inc., cs5451a Datasheet
cs5451a
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cs5451a Summary of contents
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... Reference AGND http://www.cirrus.com Description The CS5451A is a highly integrated delta-sigma (∆Σ) an- alog-to-digital converter (ADC) developed for the power measurement industry. The CS5451A combines six ∆Σ ADCs, decimation filters, and a serial interface on a sin- gle chip. The CS5451A interfaces directly to a current transformer or shunt to measure current, and to a resis- tive divider or transformer to measure voltage ...
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... PACKAGE DIMENSIONS ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION . . . . . . . . . . . . . . . 13 8. REVISION HISTORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 LIST OF FIGURES Figure 1. Serial Port Timing Figure 2. Typical Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 3. One Data Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 4. Serial Port Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 5. Generating VA- with a Charge Pump CS5451A DS635F2 ...
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... VA- - The negative analog supply. Typical -2 V ±10% relative to AGND. CPD - Designed to drive external charge pump circuitry that will produce a negative analog sup- ply (VA-)voltage. DGND - Digital Ground. VD+ - The positive digital supply. Typical +3 V ±10% relative to AGND. CS5451A Digital Supply Digital Ground Charge Pump Drive Master Clock ...
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... Gain=20 VOS - Gain=1 VOS - (50, 60 Hz) - Gain = Gain = Gain=20 EII 50 Gain=1 EII 500 Gain=20 - Gain=1 - Gain=20 - Gain=1 - Gain=20 - Gain=1 - REFOUT 1.15 - ∆ PSRR 60 VREF+ 1. CS5451A Typ Max Unit 2.7 3.0 3.3 V 2.7 3.0 3.3 V -2 Typ Max Unit - - VA+ V XIN P-P 1 P-P ±11.5 ±20 mV ±0.5 ± ...
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... PSRR 20 log = ⎩ (See Note 4) Symbol XIN OWRS = 0 OWR OWRS = 1 OWR -5 out 5 out OL (Note out CS5451A Min Typ Max - 4.0 5.3 - 5.0 6.3 - 1.0 1 ⎫ ⎬ ⎭ Min Typ Max 3 4.096 5 ...
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... XIN only t Any Digital Output OWRS = “0” SCLK OWRS = “1” SCLK Pulse Width High Pulse Width Low (Note 7 & 8) (Note 7 & 8) (Note 9) MSB(V1) MSB(V1 Figure 1. Serial Port Timing CS5451A Min Typ Max - - 1 1 fall - 500 ...
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... Total power dissipation, including all input currents and output currents. DS635F2 Symbol Positive Digital VD+ Positive Analog VA+ Negative Analog VA- (Note 10 and 11 OUT (Note 12) PDN All Analog Pins V (VA-) - 0.3 INA All Digital Pins V IND stg CS5451A Min Typ Max Unit -0.3 +3 -0.3 +3 -2.5 -0 ± ± 500 ...
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... The analog inputs are structured for 3-phase power meter applications, with three dedicated voltage and current channels. Figure 2 illustrates the CS5451A typical inputs and power supply connections. The voltage-sensing element introduces a voltage waveform on the voltage channel inputs VIN(1-3)± and is subject to a fixed 1x gain amplifier ...
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... FUNCTIONAL DESCRIPTION 4.1 Analog Inputs The CS5451A is equipped with six fully differential input channels. The inputs VIN(1-3)± and IIN(1-3)± are des- ignated as the voltage and current channel inputs, re- spectively. The full-scale differential input voltage for the current and voltage channel is ±800 mV (gain = 1x) ...
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... Power Supply The low, stable analog power consumption and superior supply rejection of the CS5451A allow for the use of a simple charge-pump negative supply generator. The use of a negative supply alleviates the need for level 96 SCLKs Channel 3 I ...
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... Cirrus Log- ic, Inc.’s application note AN152: DS635F2 BAT 85 D1 Figure 5. Generating VA- with a Charge Pump CS5521/24/28, and CS5525/26 Charge Pump Drive for External Loads. Using the CS5451A CPD AGND VA- D2 BAT µF 11 ...
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... SEATING PLANE SIDE VIEW NOM MAX MIN -- 0.084 0.006 0.010 0.05 0.069 0.074 1.62 -- 0.015 0.22 0.4015 0.413 9.90 0.307 0.323 7.40 0.209 0.220 5.00 0.026 0.030 0.55 0.0354 0.041 0.63 4° 8° 0° JEDEC #: MO-150 CS5451A 1 E1 ∝ END VIEW L MILLIMETERS NOM MAX -- -- 2.13 0.13 0.25 1.75 1.88 -- 0.38 10.20 10.50 7.80 8.20 5.30 5.60 0.65 0.75 0.90 1.03 4° 8° NOTE 2 DS635F2 ...
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... ORDERING INFORMATION Model CS5451A-IS CS5451A-ISZ (lead free) 7. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION Model Number CS5451A-IS CS5451A-ISZ (lead free) * MSL (Moisture Sensitivity Level) as specified by IPC/JEDEC J-STD-020. 8. REVISION HISTORY Revision Date A1 JUL 2003 Initial Release PP1 OCT 2003 Initial release for Preliminary Product Information ...