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  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP48FVB12 Datasheet

8-/10-/12-Bit Single/Dual Voltage Output Digital-to-Analog Converters

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MCP48FVBXX
8-/10-/12-Bit Single/Dual Voltage Output Volatile
Digital-to-Analog Converters with SPI Interface
Features
• Operating Voltage Range:
- 2.7V to 5.5V - full specifications
- 1.8V to 2.7V - reduced device specifications
• Output Voltage Resolutions:
- 8-bit: MCP48FVB0X (256 Steps)
- 10-bit: MCP48FVB1X (1024 Steps)
- 12-bit: MCP48FVB2X (4096 Steps)
• Rail-to-Rail Output
• Fast Settling Time of 7.8 µs (typical)
• DAC Voltage Reference Source Options:
- Device VDD
- External VREF pin (buffered or unbuffered)
- Internal Band Gap (1.22V typical)
• Output Gain Options:
- Unity (1x)
- 2x
• Power-on/Brown-out Reset Protection
• Power-Down Modes:
- Disconnects output buffer (High Impedance)
- Selection of VOUT pull-down resistors
(100 kor 1 k)
• Low Power Consumption:
- Normal operation: <180 µA (Single),
380 µA (Dual)
- Power-down operation: 650 nA typical
• SPI Interface:
- Supports ‘00’ and ‘11’ modes
- Up to 20 MHz writes and 10 MHz reads
- Input buffers support interfacing to
low-voltage digital devices
• Package Types: 10-lead MSOP
• Extended Temperature Range: -40°C to +125°C
Package Types
MCP48FVBX1
MSOP
Single
VDD
CS
VREF0
VOUT0
NC
1
2
3
4
5
10 SDI
9 SCK
8 SDO
7 VSS
6 LAT0/HVC
MCP48FVBX2
MSOP
Dual
VDD
CS
VREF(1)
VOUT0
VOUT1
1
2
3
4
5
10
9
8
7
6
SDI
SCK
SDO
VSS
LAT/HVC (1)
Note 1: Associated with both DAC0 and DAC1
General Description
The MCP48FVBXX are Single- and Dual-channel 8-bit,
10-bit, and 12-bit buffered voltage output
Digital-to-Analog Converters (DAC) with volatile
memory and an SPI serial interface.
The VREF pin, the device VDD or the internal band gap
voltage can be selected as the DAC’s reference
voltage. When VDD is selected, VDD is connected
internally to the DAC reference circuit. When the VREF
pin is used, the user can select the output buffer’s gain
to be 1 or 2. When the gain is 2, the VREF pin voltage
should be limited to a maximum of VDD/2.
These devices have an SPI-compatible serial interface.
Write commands are supported up to 20 MHz while
read commands are supported up to 10 MHz.
Applications
• Set Point or Offset Trimming
• Sensor Calibration
• Low-Power Portable Instrumentation
• PC Peripherals
• Data Acquisition Systems
• Motor Control
2015 Microchip Technology Inc.
DS20005466A-page 1


  Microchip Technology Semiconductor Electronic Components Datasheet  

MCP48FVB12 Datasheet

8-/10-/12-Bit Single/Dual Voltage Output Digital-to-Analog Converters

No Preview Available !

MCP48FVBXX
MCP48FVBX1 Device Block Diagram (Single-Channel Output)
VDD Power-up/
VSS Brown-out Control
SDI
SDO
SCK
CS
VREF0
SPI Serial Interface Module
and
Control Logic
VREF1:VREF0
and PD1:PD0 VDD
Band Gap VBG
(1.22V)
+
-
(1)
VDD
Memory (32x16)
DAC0 (Vol)
VREF (Vol)
Power-down (Vol)
Gain (Vol)
Status (Vol)
PD1:PD0 and
VREF1:VREF0
PD1:PD0
Gain
Op
Amp
VSS PD1:PD0
LAT0/HVC
VREF1:VREF0
VOUT0
Note 1: If Internal Band Gap is selected, this buffer has a 2x gain. If the G bit = ‘1’, this is a total gain of 4.
DS20005466A-page 2
2015 Microchip Technology Inc.


Part Number MCP48FVB12
Description 8-/10-/12-Bit Single/Dual Voltage Output Digital-to-Analog Converters
Maker Microchip
Total Page 30 Pages
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