LTC2668CUJ-12PBF View Datasheet(PDF) - Linear Technology

Part Name

Description

MFG CO.

LTC2668CUJ-12PBF

16-Channel 16-/12-Bit ±10V VOUT SoftSpan DACs with 10ppm/°C Max Reference

Linear Technology 

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LTC2668

Typical Performance Characteristics TA = 25°C, unless otherwise noted.

LTC2668-16/LTC2668-12

Mid-Scale Glitch Impulse

DAC-to-DAC Crosstalk

CS/LD

8nV–s TYP

VOUT

10mV/DIV

OVP, AVP: 5V

V+/V–: ±15V

0V TO 5V RANGE

INTERNAL REFERENCE

CREF, CREFCOMP: 0.1µF

CS/LD

6nV-s TYP

VOUT

10mV/DIV

1µs/DIV

2668 G28

FALLING MAJOR CARRY TRANSITION

RISING TRANSITION IS SIMILAR OR BETTER

ALL CHANNELS ARE SIMILAR OR BETTER

1µs/DIV

2668 G29

OVP, AVP: 5V

V+, V–: ±15V

0V TO 10V RANGE

INTERNAL REFERENCE

CREF, CREFCOMP: 0.1µF

SUBJECT CHANNEL: VOUT0

AGGRESSOR CHANNEL:

VOUT1 10V TO 0V STEP

VOUT1 RISING IS SIMILAR OR BETTER

ALL CHANNELS ARE SIMILAR OR BETTER

Large Signal Response

15

0V TO 10V RANGE

10

5

0V TO 5V RANGE

0

–5

±10V RANGE

–10

–15

10µs/DIV

2668 G30

Noise Density vs Frequency

500

Output 0.1Hz to 10Hz Voltage

Noise

400

300

VOUT

10µV/DIV

200

100

0

10

100

1k

10k 100k 1M

FREQUENCY (Hz)

2668 G31

1s/DIV

AVP = 5V, V+, V– = ±15V

0V TO 5V RANGE

CODE = MID-SCALE

INTERNAL REFERENCE

CREF = CREFCOMP = 0.1µF

2668 G32

Reference 0.1Hz to 10Hz

Voltage Noise

VREF

10µV/DIV

1s/DIV

AVP = 5V, V+, V– = ±15V

VREF = 2.5V

CREF = CREFCOMP = 0.1µF

2668 G33

Load Regulation

10

78µV/mA TYP

8 CODE: MID-SCALE

6 INTERNAL REF

4

2

0

–2

–4

–6

–8

–10

–30

0V TO 5V RANGE,

AVP, V+ = 5V, V– = GND

±10V RANGE,

AVP = 5V, V+/V– = ±15V

–20 –10 0 10 20 30 40

VOUT LOAD CURRENT (mA)

2668 G34

For more information www.linear.com/LTC2668

2668fa

11

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