LTC1664 datasheet(6/16 Pages) LINER

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LTC1664

1664fa

typical perFormance characteristics

Minimum VOUT vs Load Current

(Output Sinking)

Minimum Supply Headroom vs

Load Current (Output Sourcing)

|IOUT| (mA) (SINKING)

1664 G10

1400

1200

1000

800

600

400

200

–55°C

25°C

125°C

VCC = 5V

CODE = 0

1664 G11

1400

1200

1000

800

600

400

200

–55°C

25°C

125°C

VREF = 4.096V

∆VOUT < 1LSB

CODE = 1023

|IOUT| (mA) (SOURCING)

pin Functions

GND (Pin 1): System Ground.

VOUTA to VOUTD (Pins 2–5): DAC Analog Voltage Outputs.

The output range is:

0 to

1023

1024









VREF

REF (Pin 6): Reference Voltage Input. 0V ≤ VREF ≤ VCC.

CS/LD (Pin 7): Serial Interface Chip Select/Load Input.

When CS/LD is low, SCK is enabled for shifting data on

DIN into the register. When CS/LD is pulled high, SCK is

disabled and data is loaded from the shift register into the

specified DAC register(s), updating the analog output(s).

CMOS and TTL compatible.

SCK (Pin 8): Serial Interface Clock Input. CMOS and TTL

compatible.

DIN (Pin 9): Serial Interface Data Input. Data on the DIN

pin is shifted into the 16-bit register on the rising edge of

SCK. CMOS and TTL compatible.

DOUT (Pin 10): Serial Interface Data Output. Data appears

on DOUT 16 positive SCK edges after being applied to DIN.

May be tied to DIN of another serial device for daisy-chain

operation. CMOS and TTL compatible.

CLR (Pin 11): Asynchronous Clear Input. All internal shift

and DAC registers are cleared to zero at the falling edge of

the CLR signal, forcing the analog outputs to zero-scale.

CMOS and TTL compatible.

NC (Pins 12–15): Make no electrical connection to these

pins.

VCC (Pin 16): Supply Voltage Input. 2.7V ≤ VCC ≤ 5.5V.

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