MAX5170AEEE Просмотр технического описания (PDF) - Maxim Integrated

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MAX5170AEEE

Low-Power, Serial, 14-Bit DACs with Voltage Output

Maxim Integrated 

Low-Power, Serial, 14-Bit DACs

with Voltage Output

Typical Operating Characteristics (continued)

(MAX5170: VDD = +5V, VREF = 2.5V; MAX5172: VDD = +3V, VREF = 1.25V; CL = 100pF, OS = GND, code = 3FFF hex,

TA = +25°C, unless otherwise noted.)

MAX5172

REFERENCE INPUT FREQUENCY RESPONSE

5

0

-5

-10

-15

-20

VREF = 0.67Vp-p + 0.75VDC

-25

-30

0

500 1000 1500 2000 2500 3000

FREQUENCY (kHz)

START-UP GLITCH

VDD

1V/div

VOUT

10mV/div

AC-COUPLED

50ms/div

Pin Description

PIN NAME

FUNCTION

1

OS

Offset Adjustment. Connect to AGND for no offset.

2

OUT

Voltage Output. High impedance when in shutdown. The output voltage is limited to VDD.

3

RS

Reset Mode Select (digital input). Connect to VDD to select midscale reset output voltage. Connect to

DGND to select 0 reset output voltage.

4

PDL

Power-Down Lockout (digital input). Connect to VDD to allow shutdown. Connect to DGND to disable

software and hardware shutdown.

5

CLR

Clear DAC (digital input). Clears the DAC to either zero or midscale as determined by RS.

6

CS

Chip Select Input (digital input). DIN ignored when CS is high.

7

DIN

Serial-Data Input (digital input). Data is clocked in on the rising edge of SCLK.

8

SCLK Serial Clock Input (digital input)

9

DGND Digital Ground

10

DOUT Serial-Data Output

11

UPO User-Programmable Output. State is set by the serial input.

12

SHDN

Shutdown (digital input). Pulling SHDN high when PDL = VDD places the chip in shutdown with a maximum

shutdown current of 10µA.

13

AGND Analog Ground

14

REF

Reference Input. Maximum VREF is VDD - 1.4V.

15

N.C.

No Connection

16

VDD

Positive Supply. Bypass to AGND with a 4.7µF capacitor in parallel with a 0.1µF capacitor.

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