LTC1597 datasheet(4/20 Pages) LINER

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LTC1591/LTC1597

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ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Analog Outputs (Note 4)

COUT

Output Capacitance (Note 4)

DAC Register Loaded to All 1s: COUT1

●

115

130

DAC Register Loaded to All 0s: COUT1

●

Digital Inputs

VIH

Digital Input High Voltage

●

2.4

VIL

Digital Input Low Voltage

●

0.8

IIN

Digital Input Current

●

0.001

±1

μA

CIN

Digital Input Capacitance

(Note 4) VIN = 0V

●

8pF

Timing Characteristics

tDS

Data to WR Setup Time

●

tDH

Data to WR Hold Time

●

0ns

tWR

WR Pulse Width

●

tLD

LD Pulse Width

●

110

tCLR

Clear Pulse Width

●

tLWD

WR to LD Delay Time

●

0ns

Power Supply

VDD

Supply Voltage

●

4.5

5.5

IDD

Supply Current

Digital Inputs = 0V or VCC

●

μA

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:

±1LSB = ±0.006% of full scale = ±61ppm of full scale for the

LTC1591/LTC1591-1.

±1LSB = ±0.0015% of full scale = ±15.3ppm of full

scale for the LTC1597/LTC1597-1.

Note 3: Using internal feedback resistor.

Note 4: Guaranteed by design, not subject to test.

Note 5: I(OUT1) with DAC register loaded to all 0s.

Note 6: Typical temperature coefficient is 100ppm/

°C.

Note 7: IOUT1 load = 100Ω in parallel with 13pF.

Note 8: To 0.006% for a full-scale change, measured from the rising edge

of LD for the LTC1591/LTC1591-1. To 0.0015% for a full-scale change,

measured from the rising edge of LD for the LTC1597/LTC1597-1.

Note 9: VREF = 0V. DAC register contents changed from all 0s to all 1s or

all 1s to all 0s.

Note 10: VREF = 6VRMS at 1kHz. DAC register loaded with all 1s.

Note 11: Calculation from en = √4kTRB where: k = Boltzmann constant

(J/

°K), R = resistance (Ω), T = temperature (°K), B = bandwidth (Hz).

Note 12: Midscale transition code: 01 1111 1111 1111 to 10 0000 0000

0000 for the LTC1591/LTC1591-1 and 0111 1111 1111 1111 to 1000

0000 0000 0000 for the LTC1597/LTC1597-1.

Note 13: R1 and R2 are measured between R1 and RCOM, REF and RCOM.

Note 14: Measured using the LT1468 op amp in unipolar mode for I/V

converter and LT1468 I/V and LT1001 reference inverter in bipolar mode.

Sample Rate = 50kHz, Signal Frequency = 1kHz, VREF = 5V, TA = 25°C.

The

● denotes specifications that apply over the full operating temperature

range. VCC = 5V ±10%, VREF = 10V, IOUT1 = AGND = DGND = 0V, TA = TMIN to TMAX, unless otherwise noted.

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