LTC1867CGN Linear Technology, LTC1867CGN Datasheet - Page 14

• Manufacturer Part Number: LTC1867CGN
• Description: IC ADC 16BIT 8CH 200KSPS 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC1867CGN

• Number Of Bits: 16
• Sampling Rate (per Second): 200k
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 9mW
• 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: Contains lead / RoHS non-compliant

LTC1863/LTC1867
APPLICATIONS INFORMATION
14
(LTC1867)
(LTC1863)
CS/CONV
SDO
SDO
SCK
SDI
Hi-Z
Hi-Z
Figure 8. LTC1863/LTC1867 Bipolar Transfer
Characteristics (Two’s Complement)
t
t
DON'T CARE
CONV
CONV
011...111
011...110
000...001
000...000
111...111
111...110
100...001
100...000
–FS/2
With CS/CONV Returning LOW Before the Conversion, the ADC Remains Powered Up.
Figure 7. Example 2, CS/CONV Starts a Conversion With Short Active HIGH Pulse.
MSB = D11
MSB = D15
INPUT VOLTAGE (V)
SD
FS = 4.096
1LSB = FS/2
1LSB = (LTC1863) = 1mV
1LSB = (LTC1867) = 62.5μV
1
BIPOLAR
–1
LSB
ZERO
D10
D14 D13
0S
0V
2
LSB
S1
D9
1
n
3
D12
S0
D8
FS/2 – 1LSB
4
COM UNI SLP
D11 D10
1867 F08
D7
5
D6
6
D5
D9
7
D4
D8
8
D3
D7
9
D6
D2
10
D1
D5
11
D0
D4
12
NOT NEEDED FOR LTC1863
Figure 9. LTC1863/LTC1867 Unipolar Transfer
D3
13
111...111
111...110
100...001
100...000
011...111
011...110
000...001
000...000
D2
14
Characteristics (Straight Binary)
D1
15
UNIPOLAR
0V
ZERO
D0
t
ACQ
16
DON'T CARE
INPUT VOLTAGE (V)
FS = 4.096
1LSB = FS/2
1LSB = (LTC1863) = 1mV
1LSB = (LTC1867) = 62.5μV
n
DON'T CARE
FS – 1LSB
1867 F09
18637fa
1867 F07