ADS5102

Features:

ADS5102 (65 MSPS) ADS5103 (40 MSPS)
Differential Input
1.8 V Analog/Digital Supply
Digital Outputs Compatible With 1.8 V or 3.3 V Logic
Signal-to-Noise: 58 dB at 20 MHz (ADS5103)
Spurious Free Dynamic Range: 71 dB at 20 MHz (ADS5102)
105-mW Power Dissipation (ADS5103)
336 µW Power-Down Mode 


Application

Ultrasound
Digital Cameras
Imaging
Communications
Baseband Digitization


Pinout




Specifications

TERMINAL NAME NO.		I/O	DESCRIPTION
AVDD	2, 41, 46	I	Analog supply, 1.8V ±5%
AGND	3, 9, 42, 45	I	Analog ground
REFT	4	I/O	Reference top
REFB	5	I/O	Reference bottom
CML	6	O	Common mode level output-nominally 1.0 V
BG	7	O	Band-gap decoupling-decouple with 1 µF to GND and 100 kΩ to AVDD (refer to Figure 30)
PDREF	17	I	Powerdown reference when using external voltage reference 0 = internal VREF, 1 = external VREF. In external VREF mode, connect pins BG and REFT together.
RBIAS	14	O	Connect a resistor between this pin and AGND. This resistor value is determined by speed grade selected and is used to set amplifier internal bias currents. (see Table 2)
OE	18	I	1 = 3-state the data outputs , 0 = data bus enable
STBY	19	I	0 = power down mode, 1 = normal operation mode
CLK	20	I	Clock Input
DGND	21, 40	I	Digital ground
DVDD	22, 39	I	Digital supply-1.8 V nominally
DRVDD	24	I	Driver digital supply-1.8 V or 3.3 V nominally
D9	25	O	Digital Bit 9 (MSB)
D8	26	O	Digital Bit 8
D7	27	O	Digital Bit 7
D6	28	O	Digital Bit 6
D5	29	O	Digital Bit 5
D4	30	O	Digital Bit 4
D3	31	O	Digital Bit 3
D2	32	O	Digital Bit 2
D1	33	O	Digital Bit 1
D0	34	O	Digital Bit 0
DRGND	37	I	Driver digital ground
AIN+	44	I	Positive analog input
AIN	43	I	Negative analog input
NC	1,8,10,11,12, 13,15,16,23,35, 36, 38,47,48	NA	No internal connection on this pin

Description

The ADS5102/3 are low-power CMOS, 10-bit, analogto- digital converters (ADC) that operate from a single 1.8-V supply. The internal reference can be bypassed to use an external reference to suit the dc accuracy and temperature drift requirements of the application. A 10-bit parallel output data bus is provided with 3-state outputs. For power sensitive systems, a standby mode is provided which reduces power consumption to 336 µW. Also, if using external voltage reference, then the internal VREF circuit can be powered down. The analog input is differential, which provides excellent common-mode noise rejection as well as superior performance from the ADS5102/3.