- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄1985 > AD7988-1BRMZ-RL7 (Analog Devices Inc)IC ADC 16BIT SRL 100KSPS 10MSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7988-1BRMZ-RL7 |
| 廠(chǎng)商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 9/24頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 16BIT SRL 100KSPS 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 系列： | PulSAR® |
| 位數(shù)： | 16 |
| 采樣率（每秒）： | 100k |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類(lèi)型： | 1 個(gè)偽差分，單極 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)當(dāng)前第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)
Data Sheet
AD7988-1/AD7988-5
Rev. D | Page 17 of 24
VOLTAGE REFERENCE INPUT
The AD7988-x voltage reference input, REF, has a dynamic
input impedance and should therefore be driven by a low
impedance source with efficient decoupling between the REF
and GND pins, as explained in the Layout section.
When REF is driven by a very low impedance source, for example,
chip capacitor is appropriate for optimum performance.
If an unbuffered reference voltage is used, the decoupling value
depends on the reference used. For example, a 22 F (X5R,
1206 size) ceramic chip capacitor is appropriate for optimum
performance using a low temperature drift ADR43x reference.
If desired, a reference-decoupling capacitor value as small as
2.2 F can be used with a minimal impact on performance,
especially DNL.
Regardless, there is no need for an additional lower value ceramic
decoupling capacitor (for example, 100 nF) between the REF
and GND pins.
POWER SUPPLY
The AD7988-x uses two power supply pins: a core supply, VDD,
and a digital input/output interface supply, VIO. VIO allows
direct interface with any logic between 1.8 V and 5.0 V. To
reduce the number of supplies needed, VIO and VDD can be
tied together. The AD7988-x is independent of power supply
sequencing between VIO and VDD. Additionally, it is very
insensitive to power supply variations over a wide frequency
range, as shown in Figure 33.
80
55
1
1k
FREQUENCY (kHz)
P
S
RR
(
d
B)
10
100
75
70
65
60
10231-
034
Figure 33. PSRR vs. Frequency
To ensure optimum performance, VDD should be roughly half
of REF, the voltage reference input. For example, if REF is 5.0 V,
VDD should be set to 2.5 V (±5%). If REF = 2.5V, and VDD =
2.5 V, performance is degraded as can be seen in Table 2.
The AD7988-x powers down automatically at the end of each
conversion phase.
DIGITAL INTERFACE
Although the AD7988-x has a reduced number of pins, it offers
flexibility in its serial interface modes.
The AD7988-x, when in CS mode, is compatible with SPI, QSPI,
and digital hosts. This interface can use either a 3-wire or 4-wire
interface. A 3-wire interface using the CNV, SCK, and SDO
signals minimizes wiring connections and is useful, for
instance, in isolated applications. A 4-wire interface using the
SDI, CNV, SCK, and SDO signals allows CNV, which initiates
the conversions, to be independent of the readback timing
(SDI). This is useful in low jitter sampling or simultaneous
sampling applications.
The AD7988-x, when in chain mode, provides a daisy-chain
feature using the SDI input for cascading multiple ADCs on a
single data line, similar to a shift register.
The mode in which the part operates depends on the SDI level
when the CNV rising edge occurs. CS mode is selected if SDI is
high, and chain mode is selected if SDI is low. The SDI hold
time is such that when SDI and CNV are connected together,
the chain mode is selected.
The user must time out the maximum conversion time prior to
readback.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD7991YRJZ-1RL | IC ADC 12BIT 4CH I2C SOT23-8 |
| AD7992BRMZ-1REEL | IC ADC 12BIT 2CHAN I2C 10MSOP |
| AD7994BRUZ-1 | IC ADC 12BIT 4CHAN I2C 16TSSOP |
| AD800-52BR | IC CLK\DATA RECOVERY PLL 20-SOIC |
| AD809BR-REEL7 | IC SYNTH FREQ 155.52MHZ 16-SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7988-5 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:16-Bit Lower Power |
| AD7988-5BCPZ | 制造商:Analog Devices 功能描述:ADC 500KSPS 16BIT SPI 10LFCSP 制造商:Analog Devices 功能描述:ADC, 500KSPS, 16BIT, SPI, 10LFCSP 制造商:Analog Devices 功能描述:ADC, 500KSPS, 16BIT, SPI, 10LFCSP; Resolution (Bits):16bit; Sampling Rate:500kSPS; Digital IC Case Style:QFN; No. of Pins:10; Input Channel Type:Pseudo Differential; Data Interface:Microwire, QSPI, SPI; Operating Temperature ;RoHS Compliant: Yes |
| AD7988-5BCPZ-RL | 功能描述:IC ADC 16BIT SRL 500KSPS 10LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7988-5BCPZ-RL7 | 功能描述:IC ADC 16BIT SRL 500KSPS 10LFCSP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類(lèi)型:1 個(gè)單端，單極；1 個(gè)單端，雙極 |
| AD7988-5BRMZ | 功能描述:ADC 16BIT 500KSPS 1.25LSB 10MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:PulSAR® 標(biāo)準(zhǔn)包裝:1 系列:microPOWER™ 位數(shù):8 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:- 電壓電源:模擬和數(shù)字 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤(pán)（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類(lèi)型:8 個(gè)單端，單極 產(chǎn)品目錄頁(yè)面:892 (CN2011-ZH PDF) 其它名稱(chēng):296-25851-6 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。