參數資料
型號: MAX1221BETX+
廠商: Maxim Integrated Products
文件頁數: 42/44頁
文件大?。?/td> 0K
描述: IC ADC/DAC 12BIT W/FIFO 36TQFNEP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 50
類型: ADC,DAC
分辨率(位): 12 b
采樣率(每秒): 225k
數據接口: MICROWIRE?,QSPI?,串行,SPI?
電壓電源: 模擬和數字
電源電壓: 2.7 V ~ 5.25 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-WFQFN 裸露焊盤
供應商設備封裝: 36-TQFN 裸露焊盤(6x6)
包裝: 管件
MAX1221/MAX1223/MAX1343
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
_______________________________________________________________________________________
7
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = 2.7V to 5.25V, external reference VREF = 2.5V, fCLK = 3.6MHz (50% duty cycle), TA = -40°C to +85°C, unless other-
wise noted. Typical values are at AVDD = DVDD = 3V. TA = +25°C. Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ADC Positive-Supply Rejection
PSRA
Full-scale input, AVDD = 2.7V to 5.25V
±0.06
±0.5
mV
TIMING CHARACTERISTICS (Figures 6–13)
SCLK Clock Period
tCP
40
ns
SCLK Pulse-Width High
tCH
40/60 duty cycle
16
ns
SCLK Pulse-Width Low
tCL
60/40 duty cycle
16
ns
GPIO Output Rise/Fall After
CS Rise
tGOD
CLOAD = 20pF
100
ns
GPIO Input Setup Before CS Fall
tGSU
0ns
LDAC Pulse Width
tLDACPWL
20
ns
CLOAD = 20pF, SLOW = 0
1.8
12.0
SCLK Fall to DOUT Transition
(Note 16)
tDOT
CLOAD = 20pF, SLOW = 1
10
40
ns
CLOAD = 20pF, SLOW = 0
1.8
12.0
SCLK Rise to DOUT Transition
(Notes 16, 17)
tDOT
CLOAD = 20pF, SLOW = 1
10
40
ns
CS Fall to SCLK Fall Setup Time
tCSS
10
ns
SCLK Fall to CS Rise Setup Time
tCSH
0
2000
ns
DIN to SCLK Fall Setup Time
tDS
10
ns
DIN to SCLK Fall Hold Time
tDH
0ns
CS Pulse-Width High
tCSPWH
50
ns
CS Rise to DOUT Disable
tDOD
CLOAD = 20pF
25
ns
CS Fall to DOUT Enable
tDOE
CLOAD = 20pF
1.5
25.0
ns
EOC Fall to CS Fall
tRDS
30
ns
CKSEL = 01 (temp sense) or CKSEL = 10
(temp sense), internal reference on
65
CKSEL = 01 (temp sense) or CKSEL = 10
(temp sense), internal reference initially off
140
CKSEL = 01 (voltage conversion)
9
CKSEL = 10 (voltage conversion), internal
reference on
9
CS or CNVST Rise to EOC
Fall—Internally Clocked
Conversion Time
tDOV
CKSEL = 10 (voltage conversion), internal
reference initially off
80
s
CKSEL = 00, CKSEL = 01 (temp sense)
40
ns
CNVST Pulse Width
tCSW
CKSEL = 01 (voltage conversion)
1.4
s
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