ADS7279 低功耗、14 位、1MHz 单/双路单极输入 ADC，具有串行接口

The ADS7279 is a low-power, 14-bit, 1MSPS analog-to-digital converter (ADC) with a unipolar input. The device includes a 14-bit, capacitor-based successive approximation register (SAR) ADC with inherent sample-and-hold.

The ADS7280 is based on the same core and includes a 2-to-1 input MUX with a programmable TAG bit output option. Both the ADS7279 and ADS7280 offer a high-speed, wide voltage serial interface, and are capable of daisy-chain mode operation when multiple converters are used.

These converters are available in 4 × 4 QFN and TSSOP-16 packages, and are fully specified for operation over the industrial -40°C to +85°C temperature range.



	ADS7229	ADS7230	ADS7279	ADS7280	ADS8327	ADS8328	ADS8329	ADS8330
Resolution(Bits)	12	12	14	14	16	16	16	16
Sample Rate (max)	1MSPS	1MSPS	1MSPS	1MSPS	500kSPS	500kSPS	1MSPS	1MSPS
Architecture	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR
Power Consumption(Typ)(mW)	13.7	13.7	13.7	13.7	15	15	15.5	15.5
SINAD(dB)	73.7	73.7	85.7	85.7	88.5	88.5	92	92
SNR(dB)	72	72	81	81	91	91	88.5	92
SNR(Typ)(dB)		73.9	85.9	85.9			92	92
SFDR(dB)	93.4	93.4	105.3	105.3	101	101	102	102
DNL(Max)(+/-LSB)	0.5	0.5	1.0	1.0	1	1	1	1
INL(Max)(+/-LSB)	0.5	0.5	1.0	1.0	2	2	1.75	1.75
No Missing Codes(Bits)	12	12	14	14	16	16	16	16
ENOB(Bits)	11.8	11.8	13.5	13.5			14.99	14.99
No. of Supplies	1	1	1	1	2	2	2	2
Analog Voltage AV/DD(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7	2.7	2.7
Analog Voltage AV/DD(Max)(V)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Logic Voltage DV/DD(Min)(V)	1.65	1.65	1.65	1.65	1.65	1.65	1.65	1.65
Logic Voltage DV/DD(Max)(V)	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Input Configuration Range	Vref	Vref	Vref	Vref	Vref	Vref	Vref	Vref
Reference Mode					Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	16QFN, 16TSSOP	16TSSOP, 16QFN	16QFN, 16TSSOP	16QFN, 16TSSOP	16QFN, 16TSSOP	16QFN, 16TSSOP	16QFN, 16TSSOP	16QFN, 16TSSOP
# Input Channels	1	2	1	2	1	2	1	2
Operating Temp Range(Celsius)	-40 to 85	-40 to 85	-40 to 85,-55 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85

ADS7279 特性

• 2.7V to 5.5V Analog Supply, Low Power:
  • 13.7mW (1MHz, +VA = 3V, +VBD = 1.8V)
• 1MHz Sampling Rate 3V ≤ +VA ≤ 5.5V, 900kHz Sampling Rate 2.7V ≤ +VA ≤ 3V
• Excellent DC Performance:
  • ±0.4LSB Typ, ±1.0LSB Max INL
  • ±0.4LSB Typ, ±1.0LSB Max DNL
  • ±0.8mV Max Offset Error at 3V
  • ±1.25mV Max Offset Error at 5V
• Excellent AC Performance at fi = 10kHz with 85.9dB SNR, 105.3dB SFDR, -100.1dB THD
• Built-In Conversion Clock (CCLK)
• 1.65V to 5.5V I/O Supply:
  • SPI/DSP-Compatible Serial Interface
  • SCLK up to 50MHz
• Comprehensive Power-Down Modes:
  • Deep Power-Down
  • Nap Power-Down
  • Auto Nap Power-Down
• Unipolar Input Range: 0V to VREF
• Software Reset
• Global CONVST (Independent of CS)

ADS7279 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
ADS7279IPW	ACTIVE	-40 to 85	4.65 | 1ku	TSSOP (PW) | 16	90 | TUBE	ADS 7279I A
ADS7279IPWG4	ACTIVE	-40 to 85	4.65 | 1ku	TSSOP (PW) | 16	90 | TUBE	ADS 7279I A
ADS7279IPWR	ACTIVE	-40 to 85	4.20 | 1ku	TSSOP (PW) | 16	2000 | LARGE T&R	ADS 7279I A
ADS7279IPWRG4	ACTIVE	-40 to 85	4.20 | 1ku	TSSOP (PW) | 16	2000 | LARGE T&R	ADS 7279I A
ADS7279IRSAR	ACTIVE	-55 to 125	4.20 | 1ku	QFN (RSA) | 16	3000 | LARGE T&R	ADS 7279I A
ADS7279IRSARG4	ACTIVE	-55 to 125	4.20 | 1ku	QFN (RSA) | 16	3000 | LARGE T&R	ADS 7279I A
ADS7279IRSAT	ACTIVE	-40 to 85	4.65 | 1ku	QFN (RSA) | 16	250 | SMALL T&R	ADS 7279I A
ADS7279IRSATG4	ACTIVE	-40 to 85	4.65 | 1ku	QFN (RSA) | 16	250 | SMALL T&R	ADS 7279I A

ADS7279 工具与软件

名称	型号	公司	工具/软件类型
用于模数转换器的抗混淆计算工具	ANTIALIASINGCALC	Texas Instruments	计算实用程序
运算放大器至 ADC 电路拓扑计算器	ADC-INPUT-CALC	Texas Instruments	计算实用程序

ADS7279 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
ADS7279IPW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IPW	ADS7279IPW
ADS7279IPWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IPWG4	ADS7279IPWG4
ADS7279IPWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IPWR	ADS7279IPWR
ADS7279IPWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IPWRG4	ADS7279IPWRG4
ADS7279IRSAR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IRSAR	ADS7279IRSAR
ADS7279IRSARG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IRSARG4	ADS7279IRSARG4
ADS7279IRSAT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IRSAT	ADS7279IRSAT
ADS7279IRSATG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	ADS7279IRSATG4	ADS7279IRSATG4

ADS7279 应用技术支持与电子电路设计开发资源下载

1. ADS7279 数据资料 dataSheet 下载.PDF
2. TI 德州仪器仪ADC 模数转换器产品选型与价格 . xls
3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
4. 所选封装材料的热学和电学性质 (PDF 645 KB)
5. 高速数据转换 (PDF 1967 KB)
6. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
7. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54 (PDF 461 KB)
8. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54
9. Understanding the ADS1251, ADS1253, and ADS1254 Input Circuitry (PDF 39 KB)
10. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
11. Principles of Data Acquisition and Conversion (PDF 50 KB)
12. Interleaving Analog-to-Digital Converters (PDF 64 KB)
13. What Designers Should Know About Data Converter Drift (PDF 95 KB)
14. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
15. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)