XRD87L99

Features: • 10-Bit Resolution• 8-Channel Mux• Sampling Rate - < 1kHz - 2MHz• Low Power CMOS - 24 mW (typ)• Power Down; Lower Consumption - 0.1 mW (typ)• Input Range between GND and VDD• No S/H Required for Analog Signals less than 100kHz• No S/H Requ...

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XRD87L99 Picture
SeekIC No. : 004549347 Detail

XRD87L99: Features: • 10-Bit Resolution• 8-Channel Mux• Sampling Rate - < 1kHz - 2MHz• Low Power CMOS - 24 mW (typ)• Power Down; Lower Consumption - 0.1 mW (typ)• Input Ran...

floor Price/Ceiling Price

Part Number:
XRD87L99
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/3/27

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Product Details

Description



Features:

• 10-Bit Resolution
• 8-Channel Mux
• Sampling Rate - < 1kHz - 2MHz
• Low Power CMOS - 24 mW (typ)
• Power Down; Lower Consumption - 0.1 mW (typ)
• Input Range between GND and VDD
• No S/H Required for Analog Signals less than 100kHz
• No S/H Required for CCD Signals less than 2MHz
• Single Power Supply (2.7 to 3.6V)
• Latch-Up Free
• ESD Protection: 2000 Volts Minimum





Application

• mP/DSP Interface and Control Application
• High Resolution Imaging - Scanners & Copiers
• Wireless Digital Communications
• Multiplexed Data Acquisition





Pinout

  Connection Diagram




Specifications

VDD (to GND) +7 V
VREF(+), VREF(-), VREF(-) GND -0.5 to VDD +0.5 V
All AINs GND -0.5 to VDD +0.5 V
All Inputs GND -0.5 to VDD +0.5 V
All Outputs GND -0.5 to VDD +0.5 V
Storage Temperature -65 to +150
Lead Temperature (Soldering 10 seconds) +300
Package Power Dissipation Rating to 75
PQFP
450mW
Derates above 75 14mW/


NOTE:
1 Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation at or above this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

2 Any input pin which can see a value outside the absolute maximum ratings should be protected by Schottky diode clamps(HP5082-2835) from input pin to the supplies. All inputs have protection diodes which will protect the device from short transients outside the supplies of less than 100mA for less than 100ms.
3 VDD refers to AVDD and DVDD. GND refers to AGND and DGND.



Specifications
Res (Bits) 10
Spd 2-MSPS
Max P P Con. (mW) 24mW
No. ofCH 8
Track/Hold Yes
Vref 1 to 3V
mP Bus P=Parallel S=Serial 10, P
3V VerAvail Yes
Pkgs QFP-44





Description

The XRD87L99 is a flexible, easy to use, precision 10-bit analog-to-digital converter with 8-channel mux that operates over a wide range of input and sampling conditions. The XRD87L99 can operate with pulsed "on demand" conversion operation or continuous "pipeline" operation for sampling rates up to 2MHz. The elimination of the S/H requirements, very low power, and small package size offer the designer a low cost solution. No sample and hold is required for CCD applications up to 2MHz, or multiplexed input applications when the signal source bandwidth is limited to 100kHz. The input architecture of the XRD87L99 allows direct interface to any analog input range between AGND and AVDD. The user simply sets VREF(+) and VREF(-) to encompass the desired input range.

Scaled reference resistor taps @ 1/4 R, 1/2 R and 3/4 R allow for customizing the transfer curve as well as providing a 1/2 span reference voltage. Digital outputs are CMOS and TTL compatible.

The XRD87L99 uses a two-step flash technique. The first segment converts the 5 MSBs and consists of autobalanced comparators, latches, an encoder, and buffer storage registers. The second segment converts the remaining 5 LSBs.

When the power down input is "high", the data outputs DB9 to DB0 hold the current values and VREF(-) is disconnected from VREF1(-). The power consumption during the power down mode is 0.1mW.






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