LTC2630HSC6-LZ12#TRPBF【PDF 20/22 页】IC DAC 12BIT R-R SC70-6

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Sheet目录2006

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LTC2630

2630ff

electrical characteristics The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V, VOUT unloaded unless otherwise specified.

LTC2630-HM12/-HM10/-HM8/-HZ12/-HZ10/-HZ8, LTC2630A-HM12/-HZ12 (VFS = 4.096V)

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

AC Performance

Settling Time

VCC = 5V (Note 9)

±0.39% (±1LSB at 8 Bits)

±0.098% (±1LSB at 10 Bits)

±0.024% (±1LSB at 12 Bits)

3.7

4.4

4.8

Voltage Output Slew Rate

1.0

V/s

Capacitive Load Driving

500

Glitch Impulse

At Mid-Scale Transition

2.4

nVs

Output Voltage Noise Density

At f = 1kHz, Supply as Reference

At f = 10kHz, Supply as Reference

At f = 1kHz, Internal Reference

At f = 10kHz, Internal Reference

140

130

210

200

nV/√Hz

Output Voltage Noise

0.1Hz to 10Hz, Supply as Reference

0.1Hz to 10Hz, Internal Reference

0.1Hz to 200kHz, Supply as Reference

0.1Hz to 200kHz, Internal Reference

650

750

VP-P

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: All voltages are with respect to GND.

Note 3: High temperatures degrade operating lifetimes. Operating lifetime

is derated at temperatures greater than 105°C.

Note 4: Linearity and monotonicity are defined from code kL to code 2N–1,

where N is the resolution and kL is given by kL = 0.016 (2N/ VFS), rounded

to the nearest whole code. For VFS = 2.5V and N = 12, kL = 26 and linearity

is defined from code 26 to code 4,095. For VFS = 4.096V and

N = 12, kL = 16 and linearity is defined from code 16 to code 4,095.

Note 5: Inferred from measurement at code 16 (LTC2630-12), code 4

(LTC2630-10) or code 1 (LTC2630-8).

Note 6: This IC includes current limiting that is intended to protect the

device during momentary overload conditions. Junction temperature can

exceed the rated maximum during current limiting. Continuous operation

above the specified maximum operating junction temperature may impair

device reliability.

Note 7: Digital inputs at 0V or VCC.

Note 8: Guaranteed by design and not production tested.

Note 9: Internal Reference mode. DAC is stepped 1/4 scale to 3/4 scale

and 3/4 scale to 1/4 scale. Load is 2k

W in parallel with 100pF to GND.

Note 10: Temperature coefficient is calculated by dividing the maximum

change in output voltage by the specified temperature range.

timing characteristics The

denotes the specifications which apply over the full operating temperature

range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V. (See Figure 1) (Note 8).

LTC2630-HM12/-HM10/-HM8/-HZ12/-HZ10/-HZ8, LTC2630A-HM12/-HZ12 (VFS = 4.096V)

SYMBOL PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

SDI Valid to SCK Setup

SDI Valid to SCK Hold

SCK High Time

SCK Low Time

CS/LD Pulse width

SCK High to CS/LD High

CS/LD Low to SCK High

t10

CS/LD High to SCK Positive Edge

SCK Frequency

50% Duty Cycle

MHz

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