AD7538BQ datasheet(2/8 Pages) AD

부품명	AD7538BQ

상세설명	LC2MOS uP-Compatible 14-Bit DAC

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REV. A

–2–

AD7538–SPECIFICATIONS1

J, K

A, B

Parameter

Versions

S Version

T Version

Units

Test Conditions/Comments

ACCURACY

Resolution

14

Bits

Relative Accuracy

±2

±1

±2

±1

LSB max

All Grades Guaranteed Monotonic

Differential Nonlinearity

±1

LSB max

Over Temperature.

Full-Scale Error

Measured Using Internal RFB DAC

+25

°C

±4

LSB max

Registers Loaded with All 1s.

TMIN to TMAX

±8

±5

±10

±6

LSB max

Gain Temperature Coefficient

3;

∆Gain/∆Temperature

±2

ppm/

°C typ

Output Leakage Current IOUT (Pin 3)

+25

°C

±5

nA max

All Digital Inputs 0 V

TMIN to TMAX

±10

±20

nA max

VSS = –300 mV

TMIN to TMAX

±25

±150

nA max

VSS = 0 V

REFERENCE INPUT

Input Resistance, Pin 1

3.5

k

Ω min

Typical Input Resistance = 6 k

Ω

10

k

Ω max

DIGITAL INPUTS

VIH (Input High Voltage)

2.4

V min

VIL (Input Low Voltage)

0.8

V max

IIN (Input Current)

+25

°C

±1

µA max

VIN = 0 V or VDD

TMIN to TMAX

±10

µA max

CIN (Input Capacitance)

3

7

pF max

POWER SUPPLY

VDD Range

11.4/15.75

V min/V max

Specification Guaranteed Over

VSS Range

–200/–500

mV min/mV max

This Range

IDD

4

mA max

All Digital Inputs VIL or VIH

500

µA max

All Digital Inputs 0 V or VDD

AC PERFORMANCE CHARACTERISTICS

Parameter

TA = +25 C TA = TMIN, TMAX

Units

Test Conditions/Comments

Output Current Settling Time

1.5

µs max

To 0.003% of Full-Scale Range.

IOUT Load= 100

Ω, C

EXT = 13 pF.

DAC Register Alternately Loaded

with All 1s and All 0s. Typical Value

of Settling Time Is 0.8

µs.

Digital to Analog Glitch Impulse

20

nV-sec typ

Measured with VREF = 0 V. IOUT Load

= 100

Ω, C

EXT = 13 pF. DAC Register

Alternately Loaded with All 1s and All 0s.

Multiplying Feedthrough Error

3

5

mV p-p typ

VREF =

±10 V, 10 kHz Sine Wave DAC

Register Loaded with All 0s.

Power Supply Rejection

∆Gain/∆V

DD

±0.01

±0.02

% per % max

∆V

DD =

±5%

Output Capacitance

COUT (Pin 3)

260

pF max

DAC Register Loaded with All 1s

COUT (Pin 3)

130

pF max

DAC Register Loaded with All 0s

Output Noise Voltage Density

(10 Hz–100 kHz)

15

nV

√Hz typ

Measured Between RFB and IOUT

NOTES

Temperature range as follows: J, K Versions: 0

°C to +70°C

A, B Versions: –25

°C to +85°C

S, T Versions: –55

°C to +125°C

2Specifications are guaranteed for a V

DD of +11.4 V to +15.75 V. At VDD = 5 V, the device is fully functional with degraded specifications.

3Sample tested to ensure compliance.

Specifications subject to change without notice.

These characteristics are included for Design Guidance only and are not sub-

ject to test. (VDD = +11.4 V to +15.75 V, VREF = +10 V, VPIN3 = VPIN4 = O V, VSS =

O V or –300 mV, Output Amplifier is AD711 except where noted.)

(VDD = +11.4 V to +15.75 V

2, V

REF = +10 V; VPIN3 = VPIN4 = 0 V,

VSS = –300 mV. All specifications TMIN to TMAX unless otherwise noted.)

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