LTC1867LCGN#PBF Linear Technology, LTC1867LCGN#PBF Datasheet - Page 7

• Manufacturer Part Number: LTC1867LCGN#PBF
• Description: IC ADC 16BIT 8CH 175KSPS 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC1867LCGN#PBF

• Number Of Bits: 16
• Sampling Rate (per Second): 175k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 2.7mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN FUNCTIONS
TYPICAL PERFORMANCE CHARACTERISTICS
(LTC1863L/ LTC1867L)
CHO-CH7/COM (Pins 1-8): Analog Input Pins. Analog
inputs must be free of noise with respect to GND. CH7/COM
can be either a separate channel or the common minus
input for the other channels. Unused channels should be
tied to ground.
REFCOMP (Pin 9): Reference Buffer Output Pin. Bypass
to GND with 10μF tantalum capacitor in parallel with 0.1μF
ceramic capacitor (2.5V Nominal). To overdrive REFCOMP,
tie V
V
be used as an external reference buffer input for improved
accuracy and drift. Bypass to GND with 2.2μF tantalum
capacitor in parallel with 0.1μF ceramic capacitor.
CS/CONV (Pin 11): This input provides the dual function
of initiating conversions on the ADC and also frames the
serial data transfer.
REF
REF
(Pin 10): 1.25V Reference Output. This pin can also
to GND.
–0.25
–0.50
–0.75
–1.00
1.00
0.75
0.50
0.25
0
0
Integral Nonlinearity
vs Output Code (LTC1863L)
512
1024
1536
CODE
2048
2560
3072
3584
1863L7L G16
4096
SCK (Pin 12): Shift Clock. This clock synchronizes the
serial data transfer.
SDO (Pin 13): Digital Data Output. The A/D conversion
result is shifted out of this output. Straight binary format
for unipolar mode and two’s complement format for
bipolar mode.
SDI (Pin 14): Digital Data Input Pin. The A/D confi guration
word is shifted into this input.
GND (Pin 15): Analog and Digital GND.
V
GND with 10μF tantalum capacitor in parallel with 0.1μF
ceramic capacitor.
DD
(Pin 16): Analog and Digital Power Supply. Bypass to
–0.25
–0.50
–0.75
–1.00
1.00
0.75
0.50
0.25
0
0
Differential Nonlinearity
vs Output Code (LTC1863L)
512
1024
LTC1863L/LTC1867L
1536
2048
CODE
2560
3072
3584
1863L7L G17
4096
1863l7lfc
7