ADS7950 12 位、1MSPS、4 通道、单端、微功耗、串行接口、SAR ADC

The ADS79XX is a 12/10/8-bit multichannel analog-to-digital converter family. The following table shows all twelve devices from this product family.

The devices include a capacitor based SAR A/D converter with inherent sample and hold.

The devices accept a wide analog supply range from 2.7V to 5.25V. Very low power consumption makes these devices suitable for battery-powered and isolated power supply applications.

A wide 1.7V to 5.25V I/O supply range facilitates a glue-less interface with the most commonly used CMOS digital hosts.

The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP.

The input signal is sampled with the falling edge of CS.

	ADS7950	ADS7951	ADS7952	ADS7953	ADS7954	ADS7955	ADS7956	ADS7957	ADS7958	ADS7959	ADS7960	ADS7961
Resolution(Bits)	12	12	12	12	10	10	10	10	8	8	8	8
Sample Rate (max)	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS	1MSPS
Architecture	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR
Power Consumption(Typ)(mW)	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5
SINAD(dB)	69	69	69	69	60	60	60	60	49	49	49	49
SNR(dB)	70	70	70	70	60	60	60	60	49	49	49	49
SNR(Typ)(dB)	71.7	71.7	71.7	71.7	61.7	61.7	61.7	61.7	49.8	49.8	49	49
SFDR(dB)	84	84	84	84	82	82	82	82	78	78	78	78
DNL(Max)(+/-LSB)	1	1	1	1	0.5	0.5	0.5	0.5	0.3	0.3	0.3	0.3
INL(Max)(+/-LSB)	1	1	1	1	0.5	0.5	0.5	0.5	0.3	0.3	0.3	0.3
No Missing Codes(Bits)	12	12	12	12	10	10	10	10	8	8	8	8
ENOB(Bits)	11.29	11.29	11.29	11.29	9.66	9.66	9.66	9.66	7.85	7.85	7.85	7.85
No. of Supplies	2	2	2	2	2	2	2	2	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	2.7	2.7	2.7	2.7
Analog Voltage AV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25
Logic Voltage DV/DD(Min)(V)	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7
Logic Voltage DV/DD(Max)(V)	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25	5.25
Input Configuration Range	Vref, 2Vref	Vref, 2Vref	Vref, 2Vref	Vref, 2Vref	Vref, 2Vref	Vref, 2VREF	Vref, 2VREF	Vref, 2Vref	Vref. 2Vref	Vref, 2Vref	Vref, 2Vref	Vref, 2Vref
Reference Mode	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext	Ext
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Pin/Package	24VQFN, 30TSSOP	24VQFN, 30TSSOP	32QFN, 38TSSOP	32QFN, 38TSSOP	24VQFN, 30TSSOP	24VQFN, 30TSSOP	32QFN, 38TSSOP	32QFN, 38TSSOP	24VQFN, 30TSSOP	24VQFN, 30TSSOP	32QFN, 38TSSOP	32QFN, 38TSSOP
# Input Channels	4	8	12	16	4	8	12	16	4	8	12	16
Operating Temperature Range(°C)	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125

ADS7950 特性

1-MHz Sample Rate Serial Devices
Product Family of 12/10/8-Bit Resolution
Zero Latency
20-MHz Serial Interface
Analog Supply Range: 2.7 to 5.25V
I/O Supply Range: 1.7 to 5.25V
Two SW Selectable Unipolar, Input Ranges: 0 to 2.5V and 0 to 5V
Auto and Manual Modes for Channel Selection
12,8,4-Channel Devices can Share 16 Channel Device Footprint
Two Programmable Alarm Levels per Channel
Four Individually Configurable GPIOs for TSSOP package devices. One GPIO for QFN devices
Typical Power Dissipation: 14.5 mW (+VA = 5V, +VBD = 3V) at 1 MSPS
Power-Down Current (1 uA)
Input Bandwidth (47 MHz at 3dB)
38-,30-Pin TSSOP and 32-,24-Pin QFN Packages
APPLICATIONS
- PLC / IPC
- Battery Powered Systems
- Medical Instrumentation
- Digital Power Supplies

ADS7950 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚
ADS7950SBDBT	ACTIVE	-40 to 125	2.80 \| 1ku	TSSOP (DBT) \| 30
ADS7950SBDBTG4	ACTIVE	-40 to 125	2.80 \| 1ku	TSSOP (DBT) \| 30
ADS7950SBDBTR	ACTIVE	-40 to 125	2.55 \| 1ku	TSSOP (DBT) \| 30
ADS7950SBDBTRG4	ACTIVE	-40 to 125	2.55 \| 1ku	TSSOP (DBT) \| 30
ADS7950SBRGER	ACTIVE	-40 to 125	2.30 \| 1ku	VQFN (RGE) \| 24
ADS7950SBRGET	ACTIVE	-40 to 125	2.55 \| 1ku	VQFN (RGE) \| 24
ADS7950SDBT	ACTIVE	-40 to 125	2.55 \| 1ku	TSSOP (DBT) \| 30
ADS7950SDBTG4	ACTIVE	-40 to 125	2.55 \| 1ku	TSSOP (DBT) \| 30
ADS7950SDBTR	ACTIVE	-40 to 125	2.30 \| 1ku	TSSOP (DBT) \| 30
ADS7950SDBTRG4	ACTIVE	-40 to 125	2.30 \| 1ku	TSSOP (DBT) \| 30
ADS7950SRGER	ACTIVE	-40 to 125	2.10 \| 1ku	VQFN (RGE) \| 24
ADS7950SRGET	ACTIVE	-40 to 125	2.30 \| 1ku	VQFN (RGE) \| 24