MCP3008

Part: Microchip Technology Inc. MCP3004/3008

Type: 10-Bit A/D Converter

Key Specs:

• Resolution: 10-bit
• Differential Nonlinearity (DNL): ±1 LSB max
• Integral Nonlinearity (INL): ±1 LSB max
• Supply Voltage: 2.7V - 5.5V
• Max Sample Rate: 200 ksps (at VDD = 5V)
• Standby Current: 5 nA typical, 2 µA max
• Active Current: 500 µA max (at 5V)

Features:

• 4 (MCP3004) or 8 (MCP3008) input channels
• Analog inputs programmable as single-ended or pseudo-differential pairs
• On-chip sample and hold
• SPI serial interface (modes 0,0 and 1,1)
• Low power CMOS technology
• AEC-Q100 qualified for automotive applications (SOIC-14, SOIC-16, TSSOP-14)

Applications:

• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems

Package:

• PDIP-14
• PDIP-16
• SOIC-14 (150 mil)
• SOIC-16
• TSSOP-14

• · 10-bit resolution
• ± 1 LSB max DNL
• ± 1 LSB max INL
• 4 (MCP3004) or 8 (MCP3008) input channels
• Analog inputs programmable as single-ended or pseudo-differential pairs
• On-chip sample and hold
• SPI serial interface (modes 0,0 and 1,1)
• Single supply operation: 2.7V 5.5V
• · Sample Rate:
  • 200 ksps max. at V_DD = 5V
  • 75 ksps max. at V_DD = 2.7V
• · Low power CMOS technology
• 5 nA typical standby current, 2 μA max.
• 500 µA max. active current at 5V
• Available in PDIP, SOIC and TSSOP packages
• SOIC-14, SOIC-16, TSSOP-14: AEC-Q100 qualified for automotive applications
  • Temperature Grade 1: -40°C to +125°C
• PDIP-14 and PDIP-16: -40°C to +85°C

• · Sensor Interface. Process Control
• · Data Acquisition, Battery Operated Systems

The descriptions of the pins are listed in Table 3-1. Additional descriptions of the device pins follows.

TABLE 3-1: PIN FUNCTION TABLE

| MCP3004 | MCP3008 | |----------------------|------------|---------|----------------------------|--|--|--| | PDIP, SOIC,
TSSOP | PDIP, SOIC | Symbol | Description | | 1 | 1 | CH0 | Analog Input | | 2 | 2 | CH1 | Analog Input | | 3 | 3 | CH2 | Analog Input | | 4 | 4 | CH3 | Analog Input | | – | 5 | CH4 | Analog Input | | – | 6 | CH5 | Analog Input | | – | 7 | CH6 | Analog Input | | – | 8 | CH7 | Analog Input | | 7 | 9 | DGND | Digital Ground | | 8 | 10 | CS/SHDN | Chip Select/Shutdown Input | | 9 | 11 | DIN | Serial Data In | | 10 | 12 | DOUT | Serial Data Out | | 11 | 13 | SCLK | Serial Clock | | 12 | 14 | AGND | Analog Ground | | 13 | 15 | VREF | Reference Voltage Input | | 14 | 16 | VDD | +2.7V to 5.5V Power Supply | | 5,6 | – | NC | No Connection |

Absolute Maximum Ratings †

VDD ..................................................................................7.0V All Inputs and Outputs w.r.t. VSS ............ - 0.6V to VDD + 0.6V Storage Temperature ....................................-65°C to +150°C Ambient temperature with power applied.......-65°C to +150°C Soldering temperature of leads (10 seconds) .............+300°C ESD protection on all pins

CDM: ≤ 2kV at -40°C to +125°C HBM: ≤ 4kV at -40°C to +125°C

†

† Notice: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VREF = 5V, TA = -40°C to +125°C, fSAMPLE = 200 ksps and fSCLK = 18*fSAMPLE = 3.6 MHz. Unless otherwise noted, typical values apply for VDD = 5V and TA = +25°C.

• Note 1: This parameter is established by characterization and not 100% tested.
  • 2: See graphs that relate linearity performance to VREF levels.
  • 3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. See Section 6.2 "Maintaining Minimum Clock Speed", "Maintaining Minimum Clock Speed", for more information.
  • 4: This parameter specification applies to industrial temperature grading device option (-40°C to +85°C).
  • 5: This parameter specification applies to automotive grade 1 device option (-40°C to +125°C).

VDD ..................................................................................7.0V All Inputs and Outputs w.r.t. VSS ............ - 0.6V to VDD + 0.6V Storage Temperature ....................................-65°C to +150°C Ambient temperature with power applied.......-65°C to +150°C Soldering temperature of leads (10 seconds) .............+300°C ESD protection on all pins

CDM: ≤ 2kV at -40°C to +125°C HBM: ≤ 4kV at -40°C to +125°C

†

† Notice: Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Electrical Characteristics: Unless otherwise noted, all parameters apply at VDD = 5V, VREF = 5V, TA = -40°C to +125°C, fSAMPLE = 200 ksps and fSCLK = 18*fSAMPLE = 3.6 MHz. Unless otherwise noted, typical values apply for VDD = 5V and TA = +25°C.

• Note 1: This parameter is established by characterization and not 100% tested.
  • 2: See graphs that relate linearity performance to VREF levels.
  • 3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity performance, especially at elevated temperatures. See Section 6.2 "Maintaining Minimum Clock Speed", "Maintaining Minimum Clock Speed", for more information.
  • 4: This parameter specification applies to industrial temperature grading device option (-40°C to +85°C).
  • 5: This parameter specification applies to automotive grade 1 device option (-40°C to +125°C).