參數(shù)資料
型號: MAX1257BETM+
廠商: Maxim Integrated Products
文件頁數(shù): 34/43頁
文件大?。?/td> 0K
描述: IC ADC/DAC 12BIT 48-TQFN
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 43
類型: ADC,DAC
分辨率(位): 12 b
采樣率(每秒): 225k
數(shù)據(jù)接口: 串行
電壓電源: 模擬和數(shù)字
電源電壓: 2.7 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-WFQFN 裸露焊盤
供應商設備封裝: 48-TQFN-EP(7x7)
包裝: 管件
MAX1220/MAX1257/MAX1258
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD = VDVDD = 2.7V to 3.6V (MAX1257), external reference VREF = 2.5V (MAX1257), VAVDD = 4.75V to 5.25V, VDVDD = 2.7V to VAVDD
(MAX1220/MAX1258), external reference VREF = 4.096V (MAX1220/MAX1258), fCLK = 3.6MHz (50% duty cycle), TA = -40°C to +85°C,
unless otherwise noted. Typical values are at VAVDD = VDVDD = 3V (MAX1257), VAVDD = VDVDD = 5V (MAX1220/MAX1258), TA = +25°C.
Outputs are unloaded, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
VREF = 2.5V (MAX1257), fSAMPLE =
25
80
VREF = 4.096V (MAX1220/MAX1258),
fSAMPLE = 225ksps
40
80
REF1 Input Current (Note 9)
IREF1
Acquisition between conversions
±0.01
±1
A
VREF = 2.5V (MAX1257), fSAMPLE =
25
80
VREF = 4.096V (MAX1220/MAX1258),
fSAMPLE = 225ksps
40
80
REF2 Input Current
IREF2
Acquisition between conversions
±0.01
±1
A
DAC
DC ACCURACY (Note 10)
Resolution
12
Bits
Integral Nonlinearity
INL
±0.5
±4
LSB
Differential Nonlinearity
DNL
Guaranteed monotonic
±1.0
LSB
Offset Error
VOS
(Note 8)
±3
±10
mV
Offset-Error Drift
±10
ppm of
FS/°C
Gain Error
GE
(Note 8)
±5
±10
LSB
Gain Temperature Coefficient
±8
ppm of
FS/°C
DAC OUTPUT
No load
0.02
VAVDD -
0.02
Output-Voltage Range
10k load to either rail
0.1
VAVDD -
0.1
V
DC Output Impedance
0.5
Capacitive Load
(Note 11)
1
nF
VAVDD = 2.7V, VREF = 2.5V (MAX1257),
gain error < 1%
2000
Resistive Load to AGND
RL
VAVDD = 4.75V, VREF = 4.096V
(MAX1220/MAX1258), gain error < 2%
500
From power-down mode, VAVDD = 5V
25
Wake-Up Time (Note 12)
From power-down mode, VAVDD = 2.7V
21
s
1k Output Termination
Programmed in from power-down mode
1
k
100k Output Termination
At wake-up or programmed in
power-down mode
100
k
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