LTC1657I Ver la hoja de datos (PDF) - Linear Technology

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Fabricante

LTC1657I

Parallel 16-Bit Rail-to-Rail Micropower DAC

Linear Technology 

LTC1657/LTC1657L

ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V (LTC1657), VCC = 2.7V to 5.5V (LTC1657L),

VOUT unloaded, REFOUT tied to REFHI, REFLO tied to GND, X1/X2 tied to GND, unless otherwise noted.

SYMBOL PARAMETER

CONDITIONS

MIN

Op Amp DC Performance

Short-Circuit Current Low

VOUT Shorted to GND

q

Short-Circuit Current High

VOUT Shorted to VCC

q

Output Impedance to GND

Input Code = 0 (LTC1657)

q

Input Code = 0 (LTC1657L)

q

Output Line Regulation

AC Performance

Input Code = 65535, LTC1657: VCC = 4.5V to 5.5V q

Input Code = 65535, LTC1657L: VCC = 2.7V to 5.5V q

Voltage Output Slew Rate

(Note 5)

q ±0.3

Voltage Output Settling Time

(Note 5) to 0.0015% (16-Bit Settling Time)

(Note 5) to 0.012% (13-Bit Settling Time)

Digital Feedthrough

(Note 6)

Midscale Glitch Impulse

Output Voltage Noise Using

Internal Reference at 1kHz

DAC Switch Between 8000H and 7FFFH

X1/X2 Tied to VOUT (Notes 8, 9)

LTC1657

LTC1657L

Output Voltage Noise Using

External Reference at 1kHz

X1/X2 Tied to VOUT (Notes 8, 9, 10)

Output Voltage Noise Density Using

X1/X2 Tied to VOUT (Notes 8, 9)

Internal Reference from 0.1Hz to 10Hz

Refererence Input Multiplying BW

Reference Output (REFOUT)

Reference Output Voltage

LTC1657

LTC1657L

q 2.036

q 1.240

Reference Output

Temperature Coefficient

Reference Line Regulation

LTC1657: VCC = 4.5V to 5.5V

q

LTC1657L: VCC = 2.7V to 5.5V

q

Reference Load Regulation

Measured at IOUT = 100µA (LTC1657)

q

Measured at IOUT = 100µA (LTC1657L)

q

Short-Circuit Current

REFOUT Shorted to GND

q

Reference Output Voltage Noise at 1kHz LTC1657

LTC1657L

Reference Output Voltage Noise Density

from 0.1Hz to 10Hz

Reference Input

REFHI, REFLO Input Range

(Note 7) See Applications Information

X1/X2 Tied to VOUT

X1/X2 Tied to GND

q0

q0

REFHI Input Resistance

LTC1657

LTC1657L (Relative to REFLO)

q 16

q 16

TYP MAX UNITS

70

120

mA

80

140

mA

40

120

Ω

120 275

Ω

4

mV/V

3

mV/V

±0.7

V/µs

20

µs

10

µs

0.3

nV •s

8

nV •s

165

nV/√Hz

105

nV/√Hz

50

nV/√Hz

8

µVP-P

700

kHz

2.048

1.250

15

2.060

1.260

V

V

ppm/°C

±1.5 mV/V

±1.0 mV/V

5

mV/A

3

mV/A

50

100

mA

150

nV/√Hz

90

nV/√Hz

6

µVP-P

VCC – 1.5

V

VCC/2

V

25

kΩ

23

kΩ

3

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