LTC1667 Linear Technology Corporation, LTC1667 Datasheet - Page 8

• Manufacturer Part Number: LTC1667
• Description: Ltc1667 - 12-bit, 14-bit, 16-bit, 50msps Dac
• Manufacturer: Linear Technology Corporation

LTC1666/LTC1667/LTC1668
LTC1667
REFOUT (Pin 15): Internal Reference Voltage Output.
Nominal value is 2.5V. Requires a 0.1 F bypass capacitor
to AGND.
I
1.25mA for I
AGND (Pin 17): Analog Ground.
LADCOM (Pin 18): Attenuator Ladder Common. Normally
tied to GND.
I
scale output current occurs when all data bits are 0s.
I
current occurs when all data bits are 1s.
COMP1 (Pin 21): Current Source Control Amplifier Com-
pensation. Bypass to V
COMP2 (Pin 22): Internal Bypass Point. Bypass to V
with 0.1 F.
V
– 5V.
DGND (Pin 24): Digital Ground.
V
CLK (Pin 26): Clock Input. Data is latched and the output
is updated on positive edge of clock.
DB13 to DB0 (Pins 27, 28, 1 to 12 ): Digital Input Data Bits.
PI FU CTIO S
8
REFIN
OUT B
OUT A
SS
DD
U
(Pin 25): Positive Supply Voltage. Nominal value is 5V.
(Pin 23): Negative Supply Voltage. Nominal value is
(Pin 19): Complementary DAC Output Current. Full-
(Pin 16): Reference Input Current. Nominal value is
(Pin 20): DAC Output Current. Full-scale output
U
FS
= 10mA. I
U
SS
FS
with 0.1 F.
= I
REFIN
• 8.
SS
LTC1668
REFOUT (Pin 15): Internal Reference Voltage Output.
Nominal value is 2.5V. Requires a 0.1 F bypass capacitor
to AGND.
I
1.25mA for I
AGND (Pin 17): Analog Ground.
LADCOM (Pin 18): Attenuator Ladder Common. Normally
tied to GND.
I
scale output current occurs when all data bits are 0s.
I
current occurs when all data bits are 1s.
COMP1 (Pin 21): Current Source Control Amplifier Com-
pensation. Bypass to V
COMP2 (Pin 22): Internal Bypass Point. Bypass to V
with 0.1 F.
V
– 5V.
DGND (Pin 24): Digital Ground.
V
CLK (Pin 26): Clock Input. Data is latched and the output
is updated on positive edge of clock.
DB15 to DB0 (Pins 27, 28, 1 to 14 ): Digital Input Data Bits.
REFIN
OUT B
OUT A
SS
DD
(Pin 25): Positive Supply Voltage. Nominal value is 5V.
(Pin 23): Negative Supply Voltage. Nominal value is
(Pin 19): Complementary DAC Output Current. Full-
(Pin 16): Reference Input Current. Nominal value is
(Pin 20): DAC Output Current. Full-scale output
FS
= 10mA. I
SS
FS
with 0.1 F.
= I
REFIN
• 8.
SS