LTC1658 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1658' PDF : 12 Pages View PDF
TYPICAL PERFOR A CE CHARACTERISTICS
Gain Error vs Temperature
5
4
3
2
1
0
–1
–2
–3
–4
–5
–55 –25 5
35 65 95 125
TEMPERATURE (°C)
1658 G06
Broadband Noise
1LSB/DIV
BW = 1Hz TO
100kHz
200µs/DIV
LTC1658
1658 G08
PIN FUNCTIONS
CLK (Pin 1): The TTL Level Input for the Serial Interface
Clock.
DIN (Pin 2): The TTL Level Input for the Serial Interface
Data. Data on the DIN pin is latched into the shift register
on the rising edge of the serial clock and is loaded MSB
first. The LTC1658 requires a 16-bit word to be loaded in.
The last two bits are don’t cares.
CS/LD (Pin 3): The TTL Level Input for the Serial Inter-
face Enable and Load Control. When CS/LD is low the
CLK signal is enabled, so the data can be clocked in.
When CS/LD is pulled high, data is loaded from the shift
register into the DAC register, updating the DAC output.
DOUT (Pin 4): Output of the Shift Register Which Becomes
Valid on the Rising Edge of the Serial Clock.
GND (Pin 5): Ground.
REF (Pin 6): Reference Input. There is a gain of one from
this pin to the output. When tied to VCC the output will
swing from GND to VCC. The output can only swing to
within it’s offset specification of VCC (see Applicatons
Information).
VOUT (Pin 7): Buffered Rail-to-Rail DAC Output.
VCC (Pin 8): Positive Supply Input. 2.7V ≤ VCC ≤ 5.5V.
5
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