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參數(shù)資料
| 型號： | AD7328BRUZ-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 37/37頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT+SAR 8CHAN 20-TSSOP |
| 設(shè)計資源： | Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047) |
| 標準包裝： | 2,500 |
| 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： | 帶卷 (TR) |
| 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 |
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AD7328
Data Sheet
Rev. C | Page 8 of 36
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIN
DGND
AGND
VIN0
VSS
REFIN/OUT
CS
DGND
DOUT
VDRIVE
VIN2
VDD
VCC
VIN5
VIN4
VIN1
VIN7
VIN6
VIN3
SCLK
AD7328
TOP VIEW
(Not to Scale)
04852-
003
Figure 3. TSSOP Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
CS
Chip Select. Active low logic input. This input provides the dual function of initiating conversions on
the AD7328 and frames the serial data transfer.
2
DIN
Data In. Data to be written to the on-chip registers is provided on this input and is clocked into the
register on the falling edge of SCLK (see the Registers section).
3, 19
DGND
Digital Ground. Ground reference point for all digital circuitry on the AD7328. The DGND and AGND
voltages should ideally be at the same potential and must not be more than 0.3 V apart, even on a
transient basis.
4
AGND
Analog Ground. Ground reference point for all analog circuitry on the AD7328. All analog input signals
and any external reference signal should be referred to this AGND voltage. The AGND and DGND voltages
should ideally be at the same potential and must not be more than 0.3 V apart, even on a transient basis.
5
REFIN/OUT
Reference Input/Reference Output. The on-chip reference is available on this pin for use external to the
AD7328. The nominal internal reference voltage is 2.5 V, which appears at the pin. A 680 nF capacitor
should be placed on the reference pin. Alternatively, the internal reference can be disabled and an
external reference can be applied to this input. On power-up, the external reference mode is the default
condition (see the Reference section).
6
VSS
Negative Power Supply Voltage. This is the negative supply voltage for the analog input section.
7, 8, 14, 13, 9, 10,
12, 11
VIN0 to VIN7
Analog Input 0 to Analog Input 7. The analog inputs are multiplexed into the on-chip track-and-hold.
The analog input channel for conversion is selected by programming the channel address bits, ADD2
through ADD0, in the control register. The inputs can be configured as eight single-ended inputs, four
true differential input pairs, four pseudo differential inputs, or seven pseudo differential inputs. The
configuration of the analog inputs is selected by programming the mode bits, Bit Mode 1 and Bit Mode 0,
in the control register. The input range on each input channel is controlled by programming the range
registers. Input ranges of ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V can be selected on each analog input
channel when a +2.5 V reference voltage is used (see the Reference section).
15
VDD
Positive Power Supply Voltage. This is the positive supply voltage for the analog input section.
16
VCC
Analog Supply Voltage, 2.7 V to 5.25 V. This is the supply voltage for the ADC core on the AD7328.
17
VDRIVE
Logic Power Supply Input. The voltage supplied at this pin determines at what voltage the interface
operates. This pin should be decoupled to DGND. The voltage at this pin may be different to that at VCC,
but it should not exceed VCC by more than 0.3 V.
18
DOUT
Serial Data Output. The conversion output data is supplied to this pin as a serial data stream. The bits
are clocked out on the falling edge of the SCLK input, and 16 SCLKs are required to access the data. The
data stream consists of three channel identification bits, the sign bit, and 12 bits of conversion data.
The data is provided MSB first (see the Serial Interface section).
20
SCLK
Serial Clock, Logic Input. A serial clock input provides the SCLK used for accessing the data from the
AD7328. This clock is also used as the clock source for the conversion process.
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| AD7328BRUZ-REEL7 | 功能描述:IC ADC 12BIT+ SAR 8CHAN 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:iCMOS® 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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| AD7329BRUZ | 功能描述:IC ADC 12BIT 8CH MUX SPI 24TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝: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 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數(shù)目和類型:8 個單端，單極 產(chǎn)品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD7329BRUZ-REEL | 功能描述:IC ADC 12BIT+SAR 8CHAN 24-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標準包裝:1,000 系列:- 位數(shù):16 采樣率（每秒）:45k 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 功率耗散（最大）:315mW 電壓電源:模擬和數(shù)字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數(shù)目和類型:2 個單端，單極 |
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