MAX1257BETM+ Maxim Integrated Products, MAX1257BETM+ Datasheet - Page 39

• Manufacturer Part Number: MAX1257BETM+
• Description: IC ADC/DAC 12BIT 48-TQFN
• Manufacturer: Maxim Integrated Products
• Type: ADC, DACr

Specifications of MAX1257BETM+

• Resolution (bits): 12 b
• Sampling Rate (per Second): 225k
• Data Interface: Serial
• Voltage Supply Source: Analog and Digital
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 11. DAC/GPIO Serial-Interface Timing (Clock Mode 11)
Figure 12. DAC-Select Register Byte and DAC Serial-Interface Word
DOUT
NOTE: FOR THE MAX1220 GPIO WRITES, n = 16; FOR ALL DAC WRITES AND GPIO WRITES ON THE MAX1257/MAX1258, n = 24.
SCLK
DIN
CS
SCLK
DOUT
DIN
CS
t
CSPWH
12-Bit, Multichannel ADCs/DACs with FIFO,
t
DOE
______________________________________________________________________________________
t
CSS
BIT 7 (MSB)
t
1
1
DS
Temperature Sensing, and GPIO Ports
D15
INITIALIZES THE DAC SELECT
Dn-1
D7
t
DH
THE COMMAND BYTE
2
REGISTER
BIT 6
2
Dn-2
D14
D6
t
CL
BIT 0 (LSB)
8
t
CH
3
t
DOT
Dn-3
D13
D5
9
BIT 15
4
THE NEXT 16 BITS SELECT THE DAC
Dn-4
AND THE DATA WRITTEN TO IT
D12
D4
10
BIT 14
5
Dn-5
BIT 1
D1
D1
24
BIT 0
32
16
8
D0
t
D0
CSH
t
DOD
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