LTC2436-1IGN#TRPBF Linear Technology, LTC2436-1IGN#TRPBF Datasheet - Page 13

• Manufacturer Part Number: LTC2436-1IGN#TRPBF
• Description: IC CONV A/D 16B 2CH DIFF 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC2436-1IGN#TRPBF

• Number Of Bits: 16
• Sampling Rate (per Second): 6.8
• Data Interface: MICROWIRE™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 1mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

APPLICATIO S I FOR ATIO
In addition, the CS signal can be used to trigger a new
conversion cycle before the entire serial data transfer has
been completed. The LTC2436-1 will abort any serial data
transfer in progress and start a new conversion cycle
anytime a LOW-to-HIGH transition is detected at the CS
pin after the converter has entered the data output state
(i.e., after the first rising edge of SCK occurs with
CS = LOW).
Finally, CS can be used to control the free-running modes
of operation, see Serial Interface Timing Modes section.
Grounding CS will force the ADC to continuously convert
at the maximum output rate selected by F
SERIAL INTERFACE TIMING MODES
The LTC2436-1’s 3-wire interface is SPI and MICROWIRE
compatible. This interface offers several flexible modes of
Table 4. LTC2436-1 Interface Timing Modes
Configuration
External SCK, Single Cycle Conversion
External SCK, 2-Wire I/O
Internal SCK, Single Cycle Conversion
Internal SCK, 2-Wire I/O, Continuous Conversion
(EXTERNAL)
SDO
SCK
CS
Hi-Z
CONVERSION
TEST EOC
U
SLEEP
(OPTIONAL)
TEST EOC
U
SLEEP
Hi-Z
W
Figure 6. External Serial Clock, Single Cycle Operation
BIT 18
EOC
ANALOG INPUT RANGE
CH0/CH1
O
BIT 17
–0.5V
.
REF
U
External
External
Internal
Internal
Source
SCK
TO 0.5V
0.1V TO V
REFERENCE
BIT 16
VOLTAGE
SIG
1 F
2.7V TO 5.5V
REF
CC
BIT 15
MSB
1
2
3
4
5
6
7
V
REF
REF
CH0
CH0
CH1
CH1
CC
LTC2436-1
+
–
+
–
+
–
operation. These include internal/external serial clock,
2- or 3-wire I/O, single cycle conversion and autostart. The
following sections describe each of these serial interface
timing modes in detail. In all these cases, the converter
can use the internal oscillator (F
oscillator connected to the F
summary.
External Serial Clock, Single Cycle Operation
(SPI/MICROWIRE Compatible)
This timing mode uses an external serial clock to shift out
the conversion result and a CS signal to monitor and
control the state of the conversion cycle, see Figure 6.
The serial clock mode is selected on the falling edge of CS.
To select the external serial clock mode, the serial clock pin
(SCK) must be LOW during each CS falling edge.
BIT 14
DATA OUTPUT
SDO
GND
SCK
Conversion
CS and SCK
Continuous
CS
F
O
Control
Cycle
CS
SCK
14
13
12
11
8, 9, 10, 15, 16
BIT 13
3-WIRE
SPI INTERFACE
= EXTERNAL CLOCK SOURCE
= INTERNAL OSC/SIMULTANEOUS
50Hz/60Hz REJECTION
BIT 2
CS and SCK
Control
Internal
Output
CS
Data
SCK
O
BIT 1
pin. Refer to Table 4 for a
O
= LOW) or an external
LTC2436-1
BIT 0
LSB
Figures 9, 10
Connection
Waveforms
Figures 6, 7
CONVERSION
Figure 11
Figure 8
Hi-Z
and
TEST EOC
13
24361 F06
24361f