LTC1864CMS8 Linear Technology, LTC1864CMS8 Datasheet - Page 10

• Manufacturer Part Number: LTC1864CMS8
• Description: IC A/D CONV 1CH 16BIT 8-MSOP
• Manufacturer: Linear Technology

Specifications of LTC1864CMS8

• Number Of Bits: 16
• Sampling Rate (per Second): 250k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 400mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

PIN FUNCTIONS
LTC1864/LTC1865
LTC1864
V
the span of the A/D converter and must be kept free of
noise with respect to GND.
IN
be free of noise with respect to GND.
GND (Pin 4): Analog Ground. GND should be tied directly
to an analog ground plane.
CONV (Pin 5): Convert Input. A logic high on this input
starts the A/D conversion process. If the CONV input is
left high after the A/D conversion is fi nished, the part
LTC1865 (MSOP Package)
CONV (Pin 1): Convert Input. A logic high on this input
starts the A/D conversion process. If the CONV input is
left high after the A/D conversion is fi nished, the part
powers down. A logic low on this input enables the SDO
pin, allowing the data to be shifted out.
CH0, CH1 (Pins 2, 3): Analog Inputs. These inputs must
be free of noise with respect to AGND.
AGND (Pin 4): Analog Ground. AGND should be tied directly
to an analog ground plane.
DGND (Pin 5): Digital Ground. DGND should be tied directly
to an analog ground plane.
SDI (Pin 6): Digital Data Input. The A/D confi guration
word is shifted into this input.
LTC1865 (SO-8 Package)
CONV (Pin 1): Convert Input. A logic high on this input
starts the A/D conversion process. If the CONV input is
left high after the A/D conversion is fi nished, the part
powers down. A logic low on this input enables the SDO
pin, allowing the data to be shifted out.
CH0, CH1 (Pins 2, 3): Analog Inputs. These inputs must
be free of noise with respect to GND.
GND (Pin 4): Analog Ground. GND should be tied directly
to an analog ground plane.
10
REF
+
, IN
(Pin 1): Reference Input. The reference input defi nes
–
(Pins 2, 3): Analog Inputs. These inputs must
powers down. A logic low on this input enables the SDO
pin, allowing the data to be shifted out.
SDO (Pin 6): Digital Data Output. The A/D conversion
result is shifted out of this pin.
SCK (Pin 7): Shift Clock Input. This clock synchronizes
the serial data transfer.
V
free of noise and ripple by bypassing directly to the
analog ground plane.
SDO (Pin 7): Digital Data Output. The A/D conversion
result is shifted out of this output.
SCK (Pin 8): Shift Clock Input. This clock synchronizes
the serial data transfer.
V
free of noise and ripple by bypassing directly to the
analog ground plane.
V
the span of the A/D converter and must be kept free of
noise with respect to AGND.
SDI (Pin 5): Digital Data Input. The A/D confi guration
word is shifted into this input.
SDO (Pin 6): Digital Data Output. The A/D conversion
result is shifted out of this output.
SCK (Pin 7): Shift Clock Input. This clock synchronizes
the serial data transfer.
V
free of noise and ripple by bypassing directly to the analog
ground plane. V
CC
CC
REF
CC
(Pin 8): Positive Supply. This supply must be kept
(Pin 9): Positive Supply. This supply must be kept
(Pin 8): Positive Supply. This supply must be kept
(Pin 10): Reference Input. The reference input defi nes
REF
is tied internally to this pin.
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