CDP68HC68A2E
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CDP68HC68A2E

Product Category: IC Chips
Manufacturer: INTERSIL
Description:
  datasheetCDP68HC68A2E Datasheet
Package: DIP-16
Quantity: 15983 PCS
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
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Manufacturer: INTERSIL
Product Category: IC Chips
Features, Applications

Description

The CDP68HC68A2E is a CMOS or 10-bit successive approximation analog to digital converter (A/D) with a standard Serial Peripheral Interface (SPI) bus and eight multiplexed analog inputs. Voltage referencing is user selectable to be relative to either VDD or analog channel 0 (AI0). The analog inputs can range between VSS and VDD. The CDP68HC68A2 employs a switched capacitor, successive approximation A/D conversion technique which provides an inherent sample-and-hold function. An onchip Schmitt oscillator provides the internal timing for the A/D converter. The Schmitt input can be externally clocked or connected to a single, external capacitor to form an RC oscillator with a period of approximately 10-30ns per picofarad. Conversion times are proportional to the oscillator period. At the maximum specified frequency 1MHz, 10-bit conversions take 14μs per channel. At the same frequency, 8-bit conversions consume 12μs per channel. The versatile modes of the CDP68HC68A2 allow any combination of the eight input channels to be enabled and any one of the selected channels to be specified as the "starting" channel. Conversions proceed sequentially beginning with the starting channel. Nonselected channels are skipped. Modes can be selected to: sequence from channel to channel on command; sequence through channels automatically, converting each channel one time; or sequence repeatedly through all channels. The results of 10-bit conversions are stored in 8-bit register pairs (one pair per channel). The two most significant bits are stored in the first register of each pair and the eight least significant bits are stored in the second register of the pair. To allow faster access, in the 8-bit mode, the results of conversions are stored in a single register per channel. A read-only STATUS register facilitates monitoring the status of conversions. The STATUS register can simply be polled or the INT pin can be enabled for interrupt driven communications.


Features

10-Bit Resolution 8-Bit Mode for Single Data Byte Transfers SPI (Serial Peripheral Interface) Compatible Operates Ratiometrically Referencing VDD or an External Source 14μs 10-Bit Conversion Time 8 Multiplexed Analog Input Channels Independent Channel Select Three Modes of Operation On Chip Oscillator Low Power CMOS Circuitry Intrinsic Sample and Hold


PART NUMBER CDP68HC68A2M CDP68HC68A2M96 TEMP. RANGE (oC) to 85 PACKAGE 16 Ld PDIP 20 Ld SOIC Tape & Reel PKG. NO. E16.3 M20.3


CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright c Intersil Americas Inc. 2002. All Rights Reserved


ACC LATCH COMPARATOR 3 SPI CONTROL LOGIC MOSI SCK 8 MISO STATUS REGISTER INTERRUPT LOGIC INT

CONTROL REGISTER CE CONTROL LOGIC 4 CAR 4 ADDRESS CONTROL LOGIC 6 CHOPPER STABILIZED COMPARATOR 4

SHIFT REGISTER 8 DATA REGISTERS (READ ONLY) 8 A/D CONVERTER LATCH 10 SUCCESSIVE APPROXIMATION CONTROL LOGIC OSCILLATOR 10-BIT CAPACITOR ARRAY CAPACITOR SWITCH ARRAY 12 OSC


NOTE: USED AS VOLTAGE INPUT IN EXTERNAL REFERENCE MODE.

DC Supply Voltage Range, (VDD). to +7V (Voltage Referenced to VSS Terminal) Input Voltage Range, All Inputs. -0.5V to VDD +0.5V DC Input Current, Any One Input.±10mA


Thermal Resistance (Typical, Note 2) JA (oC/W) PDIP Package. 90 SOIC Package. 100 Maximum Power Dissipation Per Package (PD) to 60oC (Package Type E). to 85oC (Package Type E) Derate Linearly at. to 70oC (Package Type M) (Note to 85oC (Package Type M) (Note 3) Derate Linearly at. to 310mW Device Dissipation Per Output Transistor. TA = Full Package Temperate Range (All Package Types) Maximum Junction Temperature. 150oC Maximum Storage Temperature Range (TSTG). to 150oC Maximum Lead Temperature (During Soldering). 265oC At Distance 1/16 ±1/32 In. ± 0.79mm) From Case for 10s Max (SOIC - Lead Tips Only)


CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.


NOTES: 1. For maximum reliability, nominal operating conditions should be selected so that operation is always within the ranges specified. JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 3. Printed circuit board mount: x 57mm minimum area x 1.6mm thick G10 epoxy glass, or equivalent.


ACCURACY Differential Linearity Error Integral Linear Error Offset Error Gain Error

= 25oC, VDD = 5V, Unless Otherwise Specified. TEST CONDITIONS MIN TYP MAX UNITS

ANALOG INPUTS: AI0 THRU AI7 Input Resistance Sample Capacitance Input Capacitance Input Current In Series with Sample Caps During Sample State During Hold State At VIN = VREF + During Sample During Hold or Standby State From Input RC Time Constant = 1 VSS VDD +0.3 VDD μA V MHz V


Input + Full Scale Range Input Bandwidth (3dB) Input Voltage Range: AI0

DIGITAL INPUTS: MOSI, SCK, CE, to 85oC High Input Voltage Low Input Voltage Input Leakage Input Capacitance = 25oC VIH VIL VDD to 6V VDD 6V of VDD % of VDD μA pF

Search Part number : "CDP68" Included word is 15
Part Number Manufacturer Package Quantity Description
CDP68HC68A2M HARRIS SOP20 880
CDP68HC68T1P INTERSIL DIP 6060
CDP68HC68P1E INTERSIL DIP-16 1180
CDP68HC68TIE INTERSIL DIP-16P 2306
CDP68HC68P1M INF SOP 101
CDP68HC68TIM2Z INTERSIL SOP16 570
CDP68HC68P1M-TR INTERSIL SOP16 601
CDP68HC68W1 INTERSIL DIP 10575
CDP68HC68R2 INTERSIL DIP8 4228
CDP68HC68R2E HARRIS DIP8 4228
CDP6805E2E HAR DIP40 767
CDP68HC68S1M INTERSIL SOP20 122
CDP6805E3E HAR DIP 590
CDP68HC68S1M96 INTERSIL SOP20 484
CDP68HC68T1E Intersil 16-DIP (0.300", 7.62mm) 19371 IC RTC CLK/CALENDAR SPI 16-DIP
CDP68HC68A2E RELATED PRODUCT PICTURE
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