VDD = 12 V to 16.5 V, V<" />
參數(shù)資料
型號: AD7328BRUZ
廠商: Analog Devices Inc
文件頁數(shù): 35/37頁
文件大?。?/td> 0K
描述: IC ADC 12BIT+ SAR 8CHAN 20TSSOP
設(shè)計資源: Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047)
標(biāo)準(zhǔn)包裝: 75
系列: iCMOS®
位數(shù): 12
采樣率(每秒): 1M
數(shù)據(jù)接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
轉(zhuǎn)換器數(shù)目: 1
功率耗散(最大): 30mW
電壓電源: 雙 ±
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-TSSOP
包裝: 管件
輸入數(shù)目和類型: 8 個單端,單極;8 個單端,雙極;4 個差分,單極;4 個差分,雙極
產(chǎn)品目錄頁面: 777 (CN2011-ZH PDF)
AD7328
Data Sheet
Rev. C | Page 6 of 36
TIMING SPECIFICATIONS
VDD = 12 V to 16.5 V, VSS = 12 V to 16.5 V, VCC = 2.7 V to 5.25 V, VDRIVE = 2.7 V to 5.25 V, VREF = 2.5 V to 3.0 V internal/external,
TA = TMAX to TMIN. Timing specifications apply with a 32 pF load, unless otherwise noted.1
Table 3.
Limit at TMIN, TMAX
Description
Parameter
VCC < 4.75 V
VCC = 4.75 V to 5.25 V
Unit
VDRIVE ≤ VCC
fSCLK
50
kHz min
14
20
MHz max
tCONVERT
16 × tSCLK
ns max
tSCLK = 1/fSCLK
tQUIET
75
60
ns min
Minimum time between end of serial read and next falling edge of CS
t1
12
5
ns min
Minimum CS pulse width
25
20
ns min
CS to SCLK setup time; bipolar input ranges (±10 V, ±5 V, ±2.5 V)
45
35
ns min
Unipolar input range (0 V to 10 V)
t3
26
14
ns max
Delay from CS until DOUT three-state disabled
t4
57
43
ns max
Data access time after SCLK falling edge
t5
0.4 × tSCLK
ns min
SCLK low pulse width
t6
0.4 × tSCLK
ns min
SCLK high pulse width
t7
13
8
ns min
SCLK to data valid hold time
t8
40
22
ns max
SCLK falling edge to DOUT high impedance
10
9
ns min
SCLK falling edge to DOUT high impedance
t9
4
ns min
DIN setup time prior to SCLK falling edge
t10
2
ns min
DIN hold time after SCLK falling edge
tPOWER-UP
750
ns max
Power up from autostandby
500
s max
Power up from full shutdown/autoshutdown mode, internal reference
25
s typ
Power up from full shutdown/autoshutdown mode, external reference
1
Sample tested during initial release to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of VDRIVE) and timed from a voltage level of 1.6 V.
2
When using the 0 V to 10 V unipolar range, running at 1 MSPS throughput rate with t2 at 20 ns, the mark-space ratio must be limited to 50:50.
ADD1
1
2
3
4
5
13
14
15
16
WRITE
REG
SEL1
REG
SEL2
LSB
DON’T
CARE
MSB
ADD0
SIGN
DB11
DB10
DB2
DB1
DB0
t2
t6
t4
t9
t10
t3
t7
t5
t8
t1
tQUIET
tCONVERT
SCLK
CS
DOUT
THREE-
STATE
THREE-STATE
DIN
ADD2
3 IDENTIFICATION BITS
04852-
002
Figure 2. Serial Interface Timing Diagram
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