IBM EM78P312N manual Bit Microcontroller

EM78P312N

8-Bit Microcontroller

A/D Converter Characteristic (Vdd =2.5V to 5.5V, Vss=0V, Ta = -40 to 85°C)

Symbol		Parameter	Condition	Min.	Typ.	Max.	Unit
VAREF		Analog reference voltage	VAREF - VASS≧2.5V	2.5	−	VDD	V
VASS				Vss	−	Vss	V
VAI		Analog input voltage	−	VASS	−	VAREF	V
IAI1	IVDD	Analog supply current	VDD =VAREF=5.0V, VASS =0.0V	750	850	1000	μA
	Ivref		(V reference from VDD)	-10	0	+10	μA
IAI2	IVDD	Analog supply current	VDD =VAREF=5.0V, VASS =0.0V	500	600	820	μA
	IVref		(V reference from VREF)	200	250	300	μA
RN		Resolution	VDD =VAREF=5.0V, VASS =0.0V	9	10	−	Bits
LN		Linearity error	VDD = 2.5 to 5.5V Ta=25°C	0	±1	±2	LSB
DNL		Differential nonlinear	VDD = 2.5 to 5.5V Ta=25°C	0	±0.5	±0.9	LSB
		error
FSE		Full scale error	VDD =VAREF=5.0V, VASS =0.0V	±0	±1	±2	LSB
OE		Offset error	VDD =VAREF=5.0V, VASS =0.0V	±0	±0.5	±1	LSB
		Recommended
ZAI		impedance of analog	−	0	8	10	KΩ
		voltage source
TAD		A/D clock period	VDD =VAREF=5.0V, VASS =0.0V	4	−	−	μs
TCN		A/D conversion time	VDD =VAREF=5.0V, VASS =0.0V	14	−	14	TAD
ADIV		A/D input voltage range	VDD =VAREF=5.0V, VASS =0.0V	0	−	VAREF	V
ADOV		A/D output voltage swing	VDD =VAREF=5.0V, VASS =0.0V,	0	0.2	0.3	V
			RL=10KΩ	4.7	4.8	5
PSR		Power Supply Rejection	VDD =5.0V±0.5V	±0		±2	LSB

Product Specification (V1.0) 10.03.2006 • 61

(This specification is subject to change without further notice)