AD5557CRU Datasheet AD5547BRUZ, AD5547CRUZ, AD5557CRU | P4-P6

AD5547/AD5557 Data Sheet

Rev. D | Page 4 of 20

Parameter Symbol Test Conditions/Comments Min Typ Max Unit

SUPPLY CHARACTERISTICS

Power Supply Range V

DD RANGE

2.7 5.5 V

Positive Supply Current I

Logic inputs = 0 V 10 μA

Power Dissipation P

DISS

Logic inputs = 0 V 0.055 mW

Power Supply Sensitivity

∆V

= ±5% 0.003 %/%

AC CHARACTERISTICS

Output Voltage Settling Time t

To ±0.1% of full scale, data cycles from zero scale

to full scale to zero scale

0.5 μs

Reference Multiplying BW BW V

REF

= 100 mV rms, data = full scale 6.8 MHz

DAC Glitch Impulse Q V

REF

= 0 V, midscale – 1 to midscale −3.5 nV-s

Multiplying Feedthrough Error V

OUT

REF

= 100 mV rms, f = 10 kHz −78 dB

Digital Feedthrough Q

= 1, LDAC toggles at 1 MHz

7 nV-s

Total Harmonic Distortion THD V

REF

= 5 V p-p, data = full scale, f = 1 kHz −104 dB

Output Noise Density e

f = 1 kHz, BW = 1 Hz 12 nV/√Hz

Analog Crosstalk C

Signal input at Channel A and measures the

output at Channel B, f = 1 kHz

−95 dB

All static performance tests (except I

OUT

) are performed in a closed-loop system using an external precision OP97 I-to-V converter amplifier. The device R

terminal is

tied to the amplifier output. The +IN pin of the OP97 is grounded, and the I

OUT

of the DAC is tied to the OP97’s −IN pin. Typical values represent average readings

measured at 25°C.

Guaranteed by design; not subject to production testing.

All input control signals are specified with t

= t

= 2.5 ns (10% to 90% of 3 V) and are timed from a voltage level of 1.5 V.

All ac characteristic tests are performed in a closed-loop system using an AD8038 I-to-V converter amplifier except for THD where the AD8065 was used.

Timing Diagram

04452-018

LWD

LDAC

DATA

LDAC

Figure 3. AD5547/AD5557 Timing Diagram

Data Sheet AD5547/AD5557

Rev. D | Page 5 of 20

ABSOLUTE MAXIMUM RATINGS

Table 2.

Parameter Rating

to GND −0.3 V to +8 V

, R

OFS

, R1, R

COM

, and VREF to GND −18 V to +18 V

Logic Inputs to GND −0.3 V to +8 V

V(I

OUT

) to GND −0.3 V to V

+ 0.3 V

Input Current to Any Pin except Supplies ±50 mA

Thermal Resistance (θ

)

Maximum Junction Temperature (T

MAX

) 150°C

Operating Temperature Range

−40°C to +125°C

Storage Temperature Range −65°C to +150°C

Lead Temperature

Vapor Phase, 60 sec 215°C

Infrared, 15 sec 220°C

Package power dissipation = (T

J MAX

− T

)/θ

Stresses above those listed under Absolute Maximum Ratings

may cause permanent damage to the device. This is a stress

rating only; functional operation of the device at these or any

other conditions above those indicated in the operational

section of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

ESD CAUTION

AD5547/AD5557 Data Sheet

Rev. D | Page 6 of 20

PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS

AD5547

TOP VIEW

(Not to Scale)

OFSA

FBA

REFA

OUTA

AGNDA

DGND

AGNDA

OUTB

REFB

COMB

FBB

OFSB

D10

VDD

D11

D12

D13

D14

D15

MSB

LDAC

COMA

04452-003

Figure 4. AD5547 Pin Configuration

Table 3. AD5547 Pin Function Descriptions

Pin No. Mnemonic Function

1, 2, 24 to

28, 30 to

D0 to D15 Digital Input Data Bits D0 to D15. Signal level must be ≤ V

+ 0.3 V.

3 R

OFSA

Bipolar Offset Resistor A. Accepts up to ±18 V. In 2-quadrant mode, R

OFSA

ties to R

FBA

. In 4-quadrant mode, R

OFSA

ties to R

and the external reference.

4 R

FBA

Internal Matching Feedback Resistor A. Connects to the external op amp for I-to-V conversion.

5 R

4-Quandrant Resistor. In 2-quadrant mode, R

shorts to the V

RE FA

pin. In 4-quadrant mode, R

ties to R

OFSA

. Do

not connect when operating in unipolar mode.

6 R

COMA

Center Tap Point of the Two 4-Quadrant Resistors, R

and R

. In 4-quadrant mode, R

COMA

ties to the inverting

node of the reference amplifier. In 2-quadrant mode, R

COMA

shorts to the associated V

REFA

pin. Do not connect if

operating in unipolar mode.

7 V

REFA

DAC A Reference Input in 2-Quadrant Mode, R2 Terminal in 4-Quadrant Mode. In 2-quadrant mode, V

RE FA

is the

reference input with constant input resistance vs. code. In 4-quadrant mode, V

RE FA

is driven by the external

reference amplifier.

8 I

OUTA

DAC A Current Output. Connects to the inverting terminal of external precision I-to-V op amp for voltage output.

9 AGNDA DAC A Analog Ground.

10 DGND Digital Ground.

11 AGNDB DAC B Analog Ground.

12 I

OUTB

DAC B Current Output. Connects to inverting terminal of external precision I-to-V op amp for voltage output.

13 V

REFB

DAC B Reference Input Pin. Establishes DAC full-scale voltage. Constant input resistance vs. code. If configured

with an external op amp for 4-quadrant multiplying, V

REFB

becomes –V

REF

14 R

COMB

Center Tap Point of the Two 4-Quadrant Resistors, R

and R

. In 4-quadrant mode, R

COMB

ties to the inverting

node of the reference amplifier. In 2-quadrant mode, R

COMB

shorts to the V

REFB

pin. Do not connect if operating in

unipolar mode.

15 R

4-Quandrant Resistor. In 2-quadrant mode, R

shorts to the V

REFB

pin. In 4-quadrant mode, R

ties to R

OFSB

. Do not

connect if operating in unipolar mode.

16 R

FBB

Internal Matching Feedback Resistor B. Connects to external op amp for I-to-V conversion.

17 R

OFSB

Bipolar Offset Resistor B. Accepts up to ±18 V. In 2-quadrant mode, R

OFSB

ties to R

FBB

. In 4-quadrant mode, R

OFSB

ties to R

and an external reference.

Write Control Digital Input In, Active Low.

transfers shift register data to the DAC register on the rising edge.

Signal level must be ≤V

+ 0.3 V.

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P20

AD5557CRU

Mfr. #:

Buy AD5557CRU

Manufacturer:

Analog Devices Inc.

Description:

Digital to Analog Converters - DAC Dual 14 bit parallel I-out output IC

Lifecycle:

New from this manufacturer.

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AD5557CRU

AD5557CRU

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