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AD7228

LC2MOS Octal 8-Bit DAC

Analog Devices 

Data Sheet

AD7228

SPECIFICATIONS

DUAL SUPPLY

VDD = 10.8 V to 16.5 V, VSS = −5 V ± 10%, GND = 0 V, VREF = 2 V to 10 V, RL = 2 kΩ, CL = 100 pF, unless otherwise noted. All

specifications TMIN to TMAX, −40°C to +85°C unless otherwise noted. VOUT must be less than VDD by 3.5 V to ensure correct operation.

Table 1.

Parameter

STATIC PERFORMANCE

Resolution

Total Unadjusted Error (TUE)1

Relative Accuracy

Differential Nonlinearity

Full-Scale Error2

Zero Code Error

at 25°C

TMIN to TMAX

Minimum Load Resistance

REFERENCE INPUT

Voltage Range

Input Resistance

Input Capacitance3

AC Feedthrough

DIGITAL INPUTS

Input High Voltage, VINH

Input Low Voltage, VINL

Input Leakage Current

Input Capacitance3

Input Coding

DYNAMIC PERFORMANCE3

Voltage Output Slew Rate

Voltage Output Settling Time

Positive Full-Scale Change

Negative Full-Scale Change

Digital Feedthrough

Digital Crosstalk4

POWER SUPPLIES

VDD Range

VSS Range

IDD

at 25°C

TMIN to TMAX

ISS

at 25°C

TMIN to TMAX

K and B

Versions

8

±2

±1

±1

±1

±25

±30

2

2/10

2

500

−70

2.4

0.8

±1

8

Binary

2

5

5

50

50

10.8/16.5

−4.5/−5.5

16

20

14

18

L and C

Versions

8

±1

±1/2

±1

±1/2

±15

±20

2

2/10

2

500

−70

2.4

0.8

±1

8

Binary

2

5

5

50

50

10.8/16.5

−4.5/−5.5

16

20

14

18

Unit

Test Conditions/Comments

Bits

LSB max

LSB max

LSB max

LSB max

VDD = 15 V ± 10%, VREF = 10 V

Guaranteed monotonic

Typical temperature coefficient is 5 ppm/°C with

VREF = 10 V

mV max

mV max

kΩ min

Typical temperature coefficient is 30 µV/°C

VOUT = 10 V

V min/V max

kΩ min

pF max

dB typ

Occurs when each DAC is loaded with all 1s

VREF = 8 V p-p sine wave at 10 kHz

V min

V max

µA max

pF max

VIN = 0 V or VDD

V/µs min

µs max

µs max

nV-sec typ

nV-sec typ

VREF = 10 V; settling time to ±1/2 LSB

VREF = 10 V; settling time to ±1/2 LSB

Code transition all 0s to all 1s, VREF = 0 V; WR = VDD

Code transition all 0s to all 1s, VREF = 10 V; WR = 0 V

V min/V max

V min/V max

mA max

mA max

mA max

mA max

For specified performance

For specified performance

Outputs unloaded; VIN = VINL or VINH

Outputs unloaded; VIN = VINL or VINH

1 Total unadjusted error includes zero code error, relative accuracy, and full-scale error.

2 Calculated after zero code error is adjusted out.

3 Sample tested at TA = 25°C to ensure compliance.

4 The glitch impulse transferred to the output of one converter (not addressed) due to a change in the digital input code to another addressed converter.

Rev. D | Page 3 of 15

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